Declare tentative return types for Zend (#7251)

Co-authored-by: Nikita Popov <nikita.ppv@gmail.com>

Zend/tests/ArrayAccess_indirect_append.phpt

@@ -5,18 +5,18 @@ Using indirect append on ArrayAccess object
 
 class AA implements ArrayAccess {
     private $data = [];
-    public function &offsetGet($name) {
+    public function &offsetGet($name): mixed {
         if (null === $name) {
             return $this->data[];
         } else {
             return $this->data[$name];
         }
     }
-    public function offsetSet($name, $value) {
+    public function offsetSet($name, $value): void {
         $this->data[$name] = $value;
     }
-    public function offsetUnset($name) {}
+    public function offsetUnset($name): void {}
-    public function offsetExists($name) {}
+    public function offsetExists($name): bool {}
 }
 
 $aa = new AA;

Zend/tests/anon/004.phpt

@@ -12,10 +12,10 @@ class Outer {
     public function getArrayAccess() {
         /* create a proxy object implementing array access */
         return new class($this->data) extends Outer implements ArrayAccess {
-            public function offsetGet($offset)          { return $this->data[$offset]; }
+            public function offsetGet($offset): mixed          { return $this->data[$offset]; }
-            public function offsetSet($offset, $data)   { return ($this->data[$offset] = $data); }
+            public function offsetSet($offset, $data): void   { $this->data[$offset] = $data; }
-            public function offsetUnset($offset)        { unset($this->data[$offset]); }
+            public function offsetUnset($offset): void        { unset($this->data[$offset]); }
-            public function offsetExists($offset)       { return isset($this->data[$offset]); }
+            public function offsetExists($offset): bool       { return isset($this->data[$offset]); }
         };
     }
 }

Zend/tests/anon/005.phpt

@@ -14,10 +14,10 @@ class Outer {
         /* create a child object implementing array access */
         /* this grants you access to protected methods and members */
         return new class($this->data) implements ArrayAccess {
-            public function offsetGet($offset) { return $this->data[$offset]; }
+            public function offsetGet($offset): mixed { return $this->data[$offset]; }
-            public function offsetSet($offset, $data) { return ($this->data[$offset] = $data); }
+            public function offsetSet($offset, $data): void { $this->data[$offset] = $data; }
-            public function offsetUnset($offset) { unset($this->data[$offset]); }
+            public function offsetUnset($offset): void { unset($this->data[$offset]); }
-            public function offsetExists($offset) { return isset($this->data[$offset]); }
+            public function offsetExists($offset): bool { return isset($this->data[$offset]); }
         };
     }
 }

Zend/tests/arg_unpack/traversable_throwing_exception.phpt

@@ -8,7 +8,7 @@ function test(...$args) {
 }
 
 class Foo implements IteratorAggregate {
-    public function getIterator() {
+    public function getIterator(): Traversable {
         throw new Exception('getIterator');
     }
 }

Zend/tests/argument_restriction_005.phpt

@@ -3,9 +3,9 @@ Bug #55719 (Argument restriction should come with a more specific error message)
 --FILE--
 <?php
 class Sub implements ArrayAccess {
-    public function offsetSet() {
+    public function offsetSet(): void {
     }
 }
 ?>
 --EXPECTF--
-Fatal error: Declaration of Sub::offsetSet() must be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value) in %sargument_restriction_005.php on line %d
+Fatal error: Declaration of Sub::offsetSet(): void must be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void in %sargument_restriction_005.php on line %d

Zend/tests/assign_coalesce_002.phpt

@@ -26,15 +26,15 @@ try {
 var_dump($ary);
 
 class AA implements ArrayAccess {
-    public function offsetExists($k) {
+    public function offsetExists($k): bool {
         return true;
     }
-    public function &offsetGet($k) {
+    public function &offsetGet($k): mixed {
         $var = ["foo" => "bar"];
         return $var;
     }
-    public function offsetSet($k,$v) {}
+    public function offsetSet($k,$v): void {}
-    public function offsetUnset($k) {}
+    public function offsetUnset($k): void {}
 }
 
 class Dtor {
@@ -52,14 +52,14 @@ try {
 var_dump($foo);
 
 class AA2 implements ArrayAccess {
-    public function offsetExists($k) {
+    public function offsetExists($k): bool {
         return false;
     }
-    public function offsetGet($k) {
+    public function offsetGet($k): mixed {
         return null;
     }
-    public function offsetSet($k,$v) {}
+    public function offsetSet($k,$v): void {}
-    public function offsetUnset($k) {}
+    public function offsetUnset($k): void {}
 }
 
 $ary = ["foo" => new AA2];

Zend/tests/assign_coalesce_003.phpt

@@ -13,19 +13,19 @@ class AA implements ArrayAccess {
     public function __construct($data = []) {
         $this->data = $data;
     }
-    public function &offsetGet($k) {
+    public function &offsetGet($k): mixed {
         echo "offsetGet($k)\n";
         return $this->data[$k];
     }
-    public function offsetExists($k) {
+    public function offsetExists($k): bool {
         echo "offsetExists($k)\n";
         return array_key_exists($k, $this->data);
     }
-    public function offsetSet($k,$v) {
+    public function offsetSet($k,$v): void {
         echo "offsetSet($k,$v)\n";
         $this->data[$k] = $v;
     }
-    public function offsetUnset($k) { }
+    public function offsetUnset($k): void { }
 }
 
 $ary = new AA(["foo" => new AA, "null" => null]);

Zend/tests/bug26229.phpt

@@ -4,6 +4,7 @@ Bug #26229 (getIterator() segfaults when it returns arrays or scalars)
 <?php
 
 class array_iterator implements IteratorAggregate {
+        #[ReturnTypeWillChange]
         public function getIterator() {
                 return array('foo', 'bar');
         }

Zend/tests/bug30346.phpt

@@ -6,10 +6,10 @@ Bug #30346 (arrayAccess and using $this)
 class Test implements ArrayAccess
 {
         public function __construct() { }
-        public function offsetExists( $offset ) { return false; }
+        public function offsetExists( $offset ): bool { return false; }
-        public function offsetGet( $offset ) { return $offset; }
+        public function offsetGet( $offset ): mixed { return $offset; }
-        public function offsetSet( $offset, $data ) { }
+        public function offsetSet( $offset, $data ): void { }
-        public function offsetUnset( $offset ) { }
+        public function offsetUnset( $offset ): void { }
 }
 
 $post = new Test;

Zend/tests/bug30725.phpt

@@ -5,7 +5,7 @@ Bug #30725 (PHP segfaults when an exception is thrown in getIterator() within fo
 
 class Test implements IteratorAggregate
 {
-    function getIterator()
+    function getIterator(): Traversable
     {
         throw new Exception();
     }

Zend/tests/bug31683.phpt

@@ -22,25 +22,26 @@ class Foo implements ArrayAccess {
     $test = 'bug';
   }
 
-  function offsetget($test) {
+  function offsetget($test): mixed {
     var_dump($test);
     $test = 'bug';
     return 123;
   }
 
-  function offsetset($test, $val) {
+  function offsetset($test, $val): void {
     var_dump($test);
     var_dump($val);
     $test = 'bug';
     $val  = 'bug';
   }
 
-  function offsetexists($test) {
+  function offsetexists($test): bool {
     var_dump($test);
     $test = 'bug';
+    return true;
   }
 
-  function offsetunset($test) {
+  function offsetunset($test): void {
     var_dump($test);
     $test = 'bug';
   }

Zend/tests/bug32252.phpt

@@ -5,25 +5,25 @@ Bug #32252 (Segfault when offsetSet throws an Exception (only without debug))
 
 class Test implements ArrayAccess
 {
-    function offsetExists($offset)
+    function offsetExists($offset): bool
     {
         echo __METHOD__ . "($offset)\n";
         return false;
     }
 
-    function offsetGet($offset)
+    function offsetGet($offset): mixed
     {
         echo __METHOD__ . "($offset)\n";
         return null;
     }
 
-    function offsetSet($offset, $value)
+    function offsetSet($offset, $value): void
     {
         echo __METHOD__ . "($offset, $value)\n";
         throw new Exception("Ooops");
     }
 
-    function offsetUnset($offset)
+    function offsetUnset($offset): void
     {
         echo __METHOD__ . "($offset)\n";
     }

Zend/tests/bug32674.phpt

@@ -9,31 +9,31 @@ class collection implements Iterator {
   public function __construct() {
   }
 
-  public function rewind() {
+  public function rewind(): void {
     reset($this->_elements);
   }
 
-  public function count() {
+  public function count(): int {
     return count($this->_elements);
   }
 
-  public function current() {
+  public function current(): mixed {
     $element = current($this->_elements);
     return $element;
   }
 
-  public function next() {
+  public function next(): void {
     $element = next($this->_elements);
-    return $element;
+    $element;
   }
 
-  public function key() {
+  public function key(): mixed {
     $this->_fillCollection();
     $element = key($this->_elements);
     return $element;
   }
 
-  public function valid() {
+  public function valid(): bool {
     throw new Exception('shit happened');
 
     return ($this->current() !== false);

Zend/tests/bug32993.phpt

@@ -6,11 +6,11 @@ class Test implements Iterator {
 
     public $arr = array();
 
-    public function rewind()    { return reset($this->arr); }
+    public function rewind(): void    { reset($this->arr); }
-    public function current()   { throw new Exception(); }
+    public function current(): mixed   { throw new Exception(); }
-    public function key()       { return key($this->arr); }
+    public function key(): mixed       { return key($this->arr); }
-    public function next()      { return next($this->arr); }
+    public function next(): void      { next($this->arr); }
-    public function valid()     { return (current($this->arr) !== false); }
+    public function valid(): bool     { return (current($this->arr) !== false); }
 }
 
 $t = new Test();

Zend/tests/bug33710.phpt

@@ -5,10 +5,10 @@ Bug #33710 (ArrayAccess objects doesn't initialize $this)
 
 class Foo implements ArrayAccess
 {
-    function offsetExists($offset) {/*...*/}
+    function offsetExists($offset): bool { return true;}
-    function offsetGet($offset) {/*...*/}
+    function offsetGet($offset): mixed { return null; }
-    function offsetSet($offset, $value) {/*...*/}
+    function offsetSet($offset, $value): void {/*...*/}
-    function offsetUnset($offset) {/*...*/}
+    function offsetUnset($offset): void {/*...*/}
 
     function fail()
     {

Zend/tests/bug39297.phpt

@@ -10,20 +10,20 @@ class MyTree implements ArrayAccess {
     public $parent;
     public $children = array();
 
-    public function offsetExists($offset) {
+    public function offsetExists($offset): bool {
     }
 
-    public function offsetUnset($offset) {
+    public function offsetUnset($offset): void {
     }
 
-    public function offsetSet($offset, $value) {
+    public function offsetSet($offset, $value): void {
         echo "offsetSet()\n";
         $cannonicalName = strtolower($offset);
         $this->children[$cannonicalName] = $value;
         $value->parent = $this;
     }
 
-    public function offsetGet($offset) {
+    public function offsetGet($offset): mixed {
         echo "offsetGet()\n";
         $cannonicalName = strtolower($offset);
         return $this->children[$cannonicalName];

Zend/tests/bug40833.phpt

@@ -35,22 +35,22 @@ Bug #40833 (Crash when using unset() on an ArrayAccess object retrieved via __ge
             $this->entity->whatever = null;
         }
 
-        function offsetUnset($offset)
+        function offsetUnset($offset): void
         {
             $this->clear();
 //			$this->entity->{$this->name} = null;
         }
 
-        function offsetSet($offset, $value)
+        function offsetSet($offset, $value): void
         {
         }
 
-        function offsetGet($offset)
+        function offsetGet($offset): mixed
         {
             return 'Bogus ';
         }
 
-        function offsetExists($offset)
+        function offsetExists($offset): bool
         {
         }
     }

Zend/tests/bug41209.phpt

@@ -20,13 +20,13 @@ class cache implements ArrayAccess
 {
     private $container = array();
 
-    public function offsetGet($id) {}
+    public function offsetGet($id): mixed {}
 
-    public function offsetSet($id, $value) {}
+    public function offsetSet($id, $value): void {}
 
-    public function offsetUnset($id) {}
+    public function offsetUnset($id): void {}
 
-    public function offsetExists($id)
+    public function offsetExists($id): bool
     {
         return isset($this->containers[(string) $id]);
     }

Zend/tests/bug49269.phpt

@@ -5,14 +5,14 @@ Bug #49269 (Ternary operator fails on Iterator object when used inside foreach d
 class TestObject implements Iterator
 {
     public $n = 0;
-    function valid()
+    function valid(): bool
     {
         return ($this->n < 3);
     }
-    function current() {return $this->n;}
+    function current(): mixed {return $this->n;}
-    function next() {$this->n++;}
+    function next(): void {$this->n++;}
-    function key() { }
+    function key(): mixed { }
-    function rewind() {$this->n = 0;}
+    function rewind(): void {$this->n = 0;}
 }
 
 

Zend/tests/bug54367.phpt

@@ -4,11 +4,11 @@ Bug #54367 (Use of closure causes problem in ArrayAccess)
 <?php
 class MyObjet implements ArrayAccess
 {
-    public function offsetSet($offset, $value) { }
+    public function offsetSet($offset, $value): void { }
-    public function offsetExists($offset) {  }
+    public function offsetExists($offset): bool {  }
-    public function offsetUnset($offset) { }
+    public function offsetUnset($offset): void { }
 
-    public function offsetGet ($offset)
+    public function offsetGet($offset): mixed
     {
     return function ($var) use ($offset) { // here is the problem
               var_dump($offset, $var);

Zend/tests/bug60161.phpt

@@ -7,7 +7,7 @@ interface Foo extends Traversable {
 }
 
 class Example implements Foo, IteratorAggregate {
-    public function getIterator() {
+    public function getIterator(): Traversable {
         return new ArrayIterator([]);
     }
 }

Zend/tests/bug62609_2.phpt

@@ -6,7 +6,7 @@ Bug #62609: Allow implementing Traversable on abstract classes (work)
 abstract class AbstractTraversable implements Traversable {}
 
 class NonAbstractTraversable extends AbstractTraversable implements IteratorAggregate {
-    public function getIterator() {
+    public function getIterator(): Traversable {
         yield "foo";
         yield "bar";
     }

Zend/tests/bug63217.phpt

@@ -7,21 +7,23 @@ opcache.optimization_level=-1
 --FILE--
 <?php
 class Test implements ArrayAccess {
-    public function offsetExists($offset) {
+    public function offsetExists($offset): bool {
         echo "offsetExists given ";
         var_dump($offset);
+        return true;
     }
-    public function offsetUnset($offset) {
+    public function offsetUnset($offset): void {
         echo "offsetUnset given ";
         var_dump($offset);
     }
-    public function offsetSet($offset, $value) {
+    public function offsetSet($offset, $value): void {
         echo "offsetSet given ";
         var_dump($offset);
     }
-    public function offsetGet($offset) {
+    public function offsetGet($offset): mixed {
         echo "offsetGet given ";
         var_dump($offset);
+        return null;
     }
 }
 

Zend/tests/bug64417.phpt

@@ -4,20 +4,20 @@ Bug #64417 (BC break: ArrayAccess::&offsetGet() in a trait causes fatal error)
 <?php
 trait aa {
     private $container = array();
-    public function offsetSet($offset, $value) {
+    public function offsetSet($offset, $value): void {
         if (is_null($offset)) {
             $this->container[] = $value;
         } else {
             $this->container[$offset] = $value;
         }
     }
-    public function offsetExists($offset) {
+    public function offsetExists($offset): bool {
         return isset($this->container[$offset]);
     }
-    public function offsetUnset($offset) {
+    public function offsetUnset($offset): void {
         unset($this->container[$offset]);
     }
-    public function &offsetGet($offset) {
+    public function &offsetGet($offset): mixed {
     $result = null;
         if (isset($this->container[$offset])) {
             $result = &$this->container[$offset];

Zend/tests/bug68896.phpt

@@ -4,16 +4,16 @@ Bug #68896 (Changing ArrayObject value cause Segment Fault)
 <?php
 class A implements ArrayAccess {
     private $a = [];
-    function offsetGet($offset) {
+    function offsetGet($offset): mixed {
         return $this->a[$offset];
     }
-        function offsetSet($offset, $value) {
+        function offsetSet($offset, $value): void {
                 $this->a[$offset] = $value;
         }
-        function offsetExists($offset) {
+        function offsetExists($offset): bool {
                 isset($this->a[$offset]);
         }
-        function offsetUnset($offset) {
+        function offsetUnset($offset): void {
                 unset($this->a[$offset]);
         }
 }

Zend/tests/bug69955.phpt

@@ -4,19 +4,19 @@ Bug #69955 (Segfault when trying to combine [] and assign-op on ArrayAccess obje
 <?php
 class C10 implements ArrayAccess
 {
-        function offsetExists($offset)
+        function offsetExists($offset): bool
         {
                 echo "\nInside " . __METHOD__ . "\n"; var_dump($offset);
         }
-        function offsetGet($offset)
+        function offsetGet($offset): mixed
         {
                 echo "\nInside " . __METHOD__ . "\n"; var_dump($offset); return 100;
         }
-        function offsetSet($offset, $value)
+        function offsetSet($offset, $value): void
         {
                 echo "\nInside " . __METHOD__ . "\n"; var_dump($offset); var_dump($value);
         }
-        function offsetUnset($offset)
+        function offsetUnset($offset): void
         {
                 echo "\nInside " . __METHOD__ . "\n"; var_dump($offset);
         }

Zend/tests/bug70321.phpt

@@ -15,15 +15,15 @@ class foo implements arrayAccess
         return $bar;
     }
 
-    public function & offsetGet($key) {
+    public function & offsetGet($key): mixed {
         $bar = $this->bar;
         return $bar;
     }
-    public function offsetSet($key, $val) {
+    public function offsetSet($key, $val): void {
     }
-    public function offsetUnset($key) {
+    public function offsetUnset($key): void {
     }
-    public function offsetExists($key) {
+    public function offsetExists($key): bool {
     }
 }
 class bar { public $onBaz = []; }

Zend/tests/bug71731.phpt

@@ -5,22 +5,22 @@ Bug #71731: Null coalescing operator and ArrayAccess
 
 class AA implements ArrayAccess {
     private $data = [];
-    public function offsetExists($name) {
+    public function offsetExists($name): bool {
         echo "offsetExists($name)\n";
         return array_key_exists($name, $this->data);
     }
-    public function &offsetGet($name) {
+    public function &offsetGet($name): mixed {
         echo "offsetGet($name)\n";
         if (!array_key_exists($name, $this->data)) {
             throw new Exception('Unknown offset');
         }
         return $this->data[$name];
     }
-    public function offsetSet($name, $value) {
+    public function offsetSet($name, $value): void {
         echo "offsetSet($name)\n";
         $this->data[$name] = $value;
     }
-    public function offsetUnset($name) {
+    public function offsetUnset($name): void {
         echo "offsetUnset($name)\n";
         unset($this->data[$name]);
     }

Zend/tests/bug75420.10.phpt

@@ -3,10 +3,10 @@ Bug #75420.10 (Indirect modification of magic method argument)
 --FILE--
 <?php
 class Test implements ArrayAccess {
-    public function offsetExists($x) { $GLOBALS["name"] = 24; return true; }
+    public function offsetExists($x): bool { $GLOBALS["name"] = 24; return true; }
-    public function offsetGet($x) { var_dump($x); return 42; }
+    public function offsetGet($x): mixed { var_dump($x); return 42; }
-    public function offsetSet($x, $y) { }
+    public function offsetSet($x, $y): void { }
-    public function offsetUnset($x) { }
+    public function offsetUnset($x): void { }
 }
 
 $obj = new Test;

Zend/tests/bug75420.11.phpt

@@ -3,10 +3,10 @@ Bug #75420.11 (Indirect modification of magic method argument)
 --FILE--
 <?php
 class Test implements ArrayAccess {
-    public function offsetExists($x) { $GLOBALS["name"] = 24; return true; }
+    public function offsetExists($x): bool { $GLOBALS["name"] = 24; return true; }
-    public function offsetGet($x) { var_dump($x); return 42; }
+    public function offsetGet($x): mixed { var_dump($x); return 42; }
-    public function offsetSet($x, $y) { }
+    public function offsetSet($x, $y): void { }
-    public function offsetUnset($x) { }
+    public function offsetUnset($x): void { }
 }
 
 $obj = new Test;

Zend/tests/bug75420.12.phpt

@@ -3,10 +3,10 @@ Bug #75420.12 (Indirect modification of magic method argument)
 --FILE--
 <?php
 class Test implements ArrayAccess {
-    public function offsetExists($x) { $GLOBALS["name"] = 24; return true; }
+    public function offsetExists($x): bool { $GLOBALS["name"] = 24; return true; }
-    public function offsetGet($x) { var_dump($x); return 42; }
+    public function offsetGet($x): mixed { var_dump($x); return 42; }
-    public function offsetSet($x, $y) { }
+    public function offsetSet($x, $y): void { }
-    public function offsetUnset($x) { }
+    public function offsetUnset($x): void { }
 }
 
 $obj = new Test;

Zend/tests/bug75420.13.phpt

@@ -3,10 +3,10 @@ Bug #75420.13 (Indirect modification of magic method argument)
 --FILE--
 <?php
 class Test implements ArrayAccess {
-    public function offsetExists($x) { $GLOBALS["obj"] = 24; return true; }
+    public function offsetExists($x): bool { $GLOBALS["obj"] = 24; return true; }
-    public function offsetGet($x) { var_dump($x); return 42; }
+    public function offsetGet($x): mixed { var_dump($x); return 42; }
-    public function offsetSet($x, $y) { }
+    public function offsetSet($x, $y): void { }
-    public function offsetUnset($x) { }
+    public function offsetUnset($x): void { }
 }
 
 $obj = new Test;

Zend/tests/bug75420.14.phpt

@@ -3,10 +3,10 @@ Bug #75420.14 (Indirect modification of magic method argument)
 --FILE--
 <?php
 class Test implements ArrayAccess {
-    public function offsetExists($x) { $GLOBALS["obj"] = 24; return true; }
+    public function offsetExists($x): bool { $GLOBALS["obj"] = 24; return true; }
-    public function offsetGet($x) { var_dump($x); return 42; }
+    public function offsetGet($x): mixed { var_dump($x); return 42; }
-    public function offsetSet($x, $y) { }
+    public function offsetSet($x, $y): void { }
-    public function offsetUnset($x) { }
+    public function offsetUnset($x): void { }
 }
 
 $obj = new Test;

Zend/tests/bug75420.15.phpt

@@ -3,10 +3,10 @@ Bug #75420.15 (Indirect modification of magic method argument)
 --FILE--
 <?php
 class Test implements ArrayAccess {
-    public function offsetExists($x) { }
+    public function offsetExists($x): bool { }
-    public function offsetGet($x) { }
+    public function offsetGet($x): mixed { }
-    public function offsetSet($x, $y) { $GLOBALS["name"] = 24; var_dump($x); }
+    public function offsetSet($x, $y): void { $GLOBALS["name"] = 24; var_dump($x); }
-    public function offsetUnset($x) { }
+    public function offsetUnset($x): void { }
 }
 
 $obj = new Test;

Zend/tests/bug75420.16.phpt

@@ -3,10 +3,10 @@ Bug #75420.16 (Indirect modification of magic method argument)
 --FILE--
 <?php
 class Test implements ArrayAccess {
-    public function offsetExists($x) { }
+    public function offsetExists($x): bool { }
-    public function offsetGet($x) { }
+    public function offsetGet($x): mixed { }
-    public function offsetSet($x, $y) { $GLOBALS["obj"] = 24; var_dump($this); }
+    public function offsetSet($x, $y): void { $GLOBALS["obj"] = 24; var_dump($this); }
-    public function offsetUnset($x) { }
+    public function offsetUnset($x): void { }
 }
 
 $obj = new Test;

Zend/tests/bug75420.9.phpt

@@ -3,10 +3,10 @@ Bug #75420.9 (Indirect modification of magic method argument)
 --FILE--
 <?php
 class Test implements ArrayAccess {
-    public function offsetExists($x) { $GLOBALS["name"] = 24; return true; }
+    public function offsetExists($x): bool { $GLOBALS["name"] = 24; return true; }
-    public function offsetGet($x) { var_dump($x); return 42; }
+    public function offsetGet($x): mixed { var_dump($x); return 42; }
-    public function offsetSet($x, $y) { }
+    public function offsetSet($x, $y): void { }
-    public function offsetUnset($x) { }
+    public function offsetUnset($x): void { }
 }
 
 $obj = new Test;

Zend/tests/bug78356.phpt

@@ -3,16 +3,16 @@ Bug #78356: Array returned from ArrayAccess is incorrectly unpacked as argument
 --FILE--
 <?php
 $object = new class implements ArrayAccess {
-    public function offsetGet($offset)
+    public function offsetGet($offset): mixed
     {
         return [1, 2];
     }
-    public function offsetExists($offset)
+    public function offsetExists($offset): bool
     {
         return true;
     }
-    public function offsetUnset($offset) {}
+    public function offsetUnset($offset): void {}
-    public function offsetSet($offset, $value) {}
+    public function offsetSet($offset, $value): void {}
 };
 var_dump(max(...$object[0]));
 ?>

Zend/tests/dereference_005.phpt

@@ -14,16 +14,16 @@ class obj implements arrayaccess {
             "three" => 3,
         );
     }
-    public function offsetSet($offset, $value) {
+    public function offsetSet($offset, $value): void {
         $this->container[$offset] = $value;
     }
-    public function offsetExists($offset) {
+    public function offsetExists($offset): bool {
         return isset($this->container[$offset]);
     }
-    public function offsetUnset($offset) {
+    public function offsetUnset($offset): void {
         unset($this->container[$offset]);
     }
-    public function offsetGet($offset) {
+    public function offsetGet($offset): mixed {
         return isset($this->container[$offset]) ? $this->container[$offset] : null;
     }
 }

Zend/tests/enum/offsetGet-in-const-expr.phpt

@@ -6,13 +6,13 @@ Enum offsetGet in constant expression
 enum Foo implements ArrayAccess {
     case Bar;
 
-    public function offsetGet($key) {
+    public function offsetGet($key): mixed {
         return 42;
     }
 
-    public function offsetExists($key) {}
+    public function offsetExists($key): bool {}
-    public function offsetSet($key, $value) {}
+    public function offsetSet($key, $value): void {}
-    public function offsetUnset($key) {}
+    public function offsetUnset($key): void {}
 }
 
 class X {

Zend/tests/foreach_003.phpt

@@ -18,11 +18,11 @@ class IT implements Iterator {
         }
     }
 
-    function rewind()  {$this->trap(__FUNCTION__); $this->n = 0;}
+    function rewind(): void  {$this->trap(__FUNCTION__); $this->n = 0;}
-    function valid()   {$this->trap(__FUNCTION__); return $this->n < $this->count;}
+    function valid(): bool   {$this->trap(__FUNCTION__); return $this->n < $this->count;}
-    function key()     {$this->trap(__FUNCTION__); return $this->n;}
+    function key(): mixed     {$this->trap(__FUNCTION__); return $this->n;}
-    function current() {$this->trap(__FUNCTION__); return $this->n;}
+    function current(): mixed {$this->trap(__FUNCTION__); return $this->n;}
-    function next()    {$this->trap(__FUNCTION__); $this->n++;}
+    function next(): void    {$this->trap(__FUNCTION__); $this->n++;}
 }
 
 foreach(['rewind', 'valid', 'key', 'current', 'next'] as $trap) {

Zend/tests/foreach_empty_loop_leak.phpt

@@ -4,7 +4,7 @@ Empty foreach loops with exception must not leak
 <?php
 
 class Foo implements IteratorAggregate {
-    public function getIterator() {
+    public function getIterator(): Traversable {
         return new ArrayIterator([]);
     }
     public function __destruct() {

Zend/tests/generators/bug71013.phpt

@@ -6,11 +6,11 @@ Bug #71013 (Incorrect exception handler with yield from)
 class FooBar implements Iterator {
     function __construct()   { echo "Constructing new FooBar\n"; }
     function __destruct()    { echo "Destructing FooBar\n"; }
-    function current ()      { throw new Exception; }
+    function current (): mixed      { throw new Exception; }
-    function key ()          { return 0; }
+    function key (): int          { return 0; }
-    function next ()         {}
+    function next (): void         {}
-    function rewind ()       {}
+    function rewind (): void       {}
-    function valid ()        { return true; }
+    function valid (): bool        { return true; }
 }
 
 function foo() {

Zend/tests/generators/generator_method.phpt

@@ -10,7 +10,7 @@ class Test implements IteratorAggregate {
         $this->data = $data;
     }
 
-    public function getIterator() {
+    public function getIterator(): Traversable {
         foreach ($this->data as $value) {
             yield $value;
         }

Zend/tests/generators/generator_method_by_ref.phpt

@@ -14,7 +14,7 @@ class Test implements IteratorAggregate {
         return $this->data;
     }
 
-    public function &getIterator() {
+    public function &getIterator(): Traversable {
         foreach ($this->data as $key => &$value) {
             yield $key => $value;
         }

Zend/tests/generators/yield_from_iterator_agregate.phpt

@@ -4,7 +4,7 @@ yield from with an IteratorAggregate
 <?php
 class foo implements \IteratorAggregate {
   public $prop = 1;
-  function getIterator() {
+  function getIterator(): Traversable {
     var_dump($this->prop);
     yield;
   }

Zend/tests/generators/yield_from_valid_exception.phpt

@@ -4,11 +4,11 @@ Exception from valid() during yield from
 <?php
 
 class FooBar implements Iterator {
-    function rewind() {}
+    function rewind(): void {}
-    function current() {}
+    function current(): mixed {}
-    function key() {}
+    function key(): mixed {}
-    function next() {}
+    function next(): void {}
-    function valid() {
+    function valid(): bool {
         throw new Exception("Exception from valid()");
     }
 }

Zend/tests/list/list_reference_006.phpt

@@ -5,10 +5,10 @@
 class StorageNoRef implements ArrayAccess {
     private $s = [];
     function __construct(array $a) { $this->s = $a; }
-    function offsetSet ($k, $v) { $this->s[$k] = $v; }
+    function offsetSet ($k, $v): void { $this->s[$k] = $v; }
-    function offsetGet ($k) { return $this->s[$k]; }
+    function offsetGet ($k): mixed { return $this->s[$k]; }
-    function offsetExists ($k) { return isset($this->s[$k]); }
+    function offsetExists ($k): bool { return isset($this->s[$k]); }
-    function offsetUnset ($k) { unset($this->s[$k]); }
+    function offsetUnset ($k): void { unset($this->s[$k]); }
 }
 
 $a = new StorageNoRef([1, 2]);

Zend/tests/list/list_reference_007.phpt

@@ -6,10 +6,10 @@
 class StorageRef implements ArrayAccess {
     private $s = [];
     function __construct(array $a) { $this->s = $a; }
-    function offsetSet ($k, $v) { $this->s[$k] = $v; }
+    function offsetSet ($k, $v): void { $this->s[$k] = $v; }
-    function &offsetGet ($k) { return $this->s[$k]; }
+    function &offsetGet ($k): mixed { return $this->s[$k]; }
-    function offsetExists ($k) { return isset($this->s[$k]); }
+    function offsetExists ($k): bool { return isset($this->s[$k]); }
-    function offsetUnset ($k) { unset($this->s[$k]); }
+    function offsetUnset ($k): void { unset($this->s[$k]); }
 }
 
 $a = new StorageRef([1, 2]);

Zend/tests/list_destructuring_to_special_variables.phpt

@@ -12,12 +12,12 @@ class Obj {
 
 class Arr implements ArrayAccess {
     public $values = [];
-    public function offsetSet($name, $value) {
+    public function offsetSet($name, $value): void {
         $this->values[$name] = $value;
     }
-    public function offsetGet($name) {}
+    public function offsetGet($name): mixed {}
-    public function offsetExists($name) {}
+    public function offsetExists($name): bool {}
-    public function offsetUnset($name) {}
+    public function offsetUnset($name): void {}
 }
 
 $str = 'ab';

Zend/tests/list_keyed_ArrayAccess.phpt

@@ -25,15 +25,16 @@ echo PHP_EOL;
 
 class IndexPrinter implements ArrayAccess
 {
-    public function offsetGet($offset) {
+    public function offsetGet($offset): mixed {
         echo "GET ";
         var_dump($offset);
+        return null;
     }
-    public function offsetSet($offset, $value) {
+    public function offsetSet($offset, $value): void {
     }
-    public function offsetExists($offset) {
+    public function offsetExists($offset): bool {
     }
-    public function offsetUnset($offset) {
+    public function offsetUnset($offset): void {
     }
 }
 

Zend/tests/list_keyed_evaluation_order.inc

@@ -32,7 +32,7 @@ class Indexable implements ArrayAccess
         echo "Offset $offset removed.", PHP_EOL;
     }
 
-    public function offsetGet($offset) {
+    public function offsetGet($offset): mixed {
         echo "Offset $offset retrieved.", PHP_EOL;
         return $this->array[$offset];
     }

Zend/tests/object_handlers.phpt

@@ -19,16 +19,18 @@ class foo implements ArrayAccess {
     static function __callStatic($func, $args) {
         $GLOBALS["y"] = $func;
     }
-    function offsetGet($index) {
+    function offsetGet($index): mixed {
+        $GLOBALS["y"] = $index;
+        return null;
+    }
+    function offsetSet($index, $newval): void {
         $GLOBALS["y"] = $index;
     }
-    function offsetSet($index, $newval) {
+    function offsetExists($index): bool {
         $GLOBALS["y"] = $index;
+        return true;
     }
-    function offsetExists($index) {
+    function offsetUnset($index): void {
-        $GLOBALS["y"] = $index;
-    }
-    function offsetUnset($index) {
         $GLOBALS["y"] = $index;
     }
 }

Zend/tests/objects_032.phpt

@@ -6,15 +6,15 @@ Covariant return-by-ref constraints
 class A implements ArrayAccess {
     public $foo = array();
 
-    public function &offsetGet($n) {
+    public function &offsetGet($n): mixed {
         return $this->foo[$n];
     }
 
-    public function offsetSet($n, $v) {
+    public function offsetSet($n, $v): void {
     }
-    public function offsetUnset($n) {
+    public function offsetUnset($n): void {
     }
-    public function offsetExists($n) {
+    public function offsetExists($n): bool {
     }
 }
 

Zend/tests/temporary_cleaning_013.phpt

@@ -52,10 +52,10 @@ try {
 
 try {
     $foo = new class implements ArrayAccess {
-        function offsetGet($x) { return [0]; }
+        function offsetGet($x): mixed { return [0]; }
-        function offsetSet($x, $y) {}
+        function offsetSet($x, $y): void {}
-        function offsetExists($x) { return true; }
+        function offsetExists($x): bool { return true; }
-        function offsetUnset($x) {}
+        function offsetUnset($x): void {}
     };
     var_dump($foo[0] += [new class {
         function __destruct() { throw new Exception; }
@@ -65,10 +65,10 @@ try {
 try {
     $foo = new class implements ArrayAccess {
         public $foo = [0];
-        function &offsetGet($x) { return $this->foo; }
+        function &offsetGet($x): bool { return $this->foo; }
-        function offsetSet($x, $y) {}
+        function offsetSet($x, $y): void {}
-        function offsetExists($x) { return true; }
+        function offsetExists($x): bool { return true; }
-        function offsetUnset($x) {}
+        function offsetUnset($x): void {}
     };
     var_dump($foo[0] += [new class {
         function __destruct() { throw new Exception; }
@@ -123,20 +123,20 @@ try {
 
 try {
     var_dump((function() { return new class implements ArrayAccess {
-        function offsetGet($x) { return [new stdClass]; }
+        function offsetGet($x): mixed { return [new stdClass]; }
-        function offsetSet($x, $y) {}
+        function offsetSet($x, $y): void {}
-        function offsetExists($x) { return true; }
+        function offsetExists($x): bool { return true; }
-        function offsetUnset($x) {}
+        function offsetUnset($x): void {}
         function __destruct() { throw new Exception; }
     }; })()[0]++);
 } catch (Exception $e) { print "caught Exception 15\n"; }
 
 try {
     var_dump(++(function() { return new class implements ArrayAccess {
-        function offsetGet($x) { return [new stdClass]; }
+        function offsetGet($x): mixed { return [new stdClass]; }
-        function offsetSet($x, $y) {}
+        function offsetSet($x, $y): void {}
-        function offsetExists($x) { return true; }
+        function offsetExists($x): bool { return true; }
-        function offsetUnset($x) {}
+        function offsetUnset($x): void {}
         function __destruct() { throw new Exception; }
     }; })()[0]);
 } catch (Exception $e) { print "caught Exception 16\n"; }
@@ -158,10 +158,10 @@ try {
 
 try {
     var_dump((new class implements ArrayAccess {
-        function offsetGet($x) { return [new stdClass]; }
+        function offsetGet($x): mixed { return [new stdClass]; }
-        function offsetSet($x, $y) {}
+        function offsetSet($x, $y): void {}
-        function offsetExists($x) { return true; }
+        function offsetExists($x): bool { return true; }
-        function offsetUnset($x) {}
+        function offsetUnset($x): void {}
         function __destruct() { throw new Exception; }
     })[0]);
 } catch (Exception $e) { print "caught Exception 19\n"; }
@@ -183,10 +183,10 @@ try {
 
 try {
     var_dump(isset((new class implements ArrayAccess {
-        function offsetGet($x) { return [new stdClass]; }
+        function offsetGet($x): mixed { return [new stdClass]; }
-        function offsetSet($x, $y) {}
+        function offsetSet($x, $y): void {}
-        function offsetExists($x) { return true; }
+        function offsetExists($x): bool { return true; }
-        function offsetUnset($x) {}
+        function offsetUnset($x): void {}
         function __destruct() { throw new Exception; }
     })[0]->bar));
 } catch (Exception $e) { print "caught Exception 22\n"; }
@@ -222,10 +222,10 @@ try {
 
 try {
     $foo = new class implements ArrayAccess {
-        function offsetGet($x) {}
+        function offsetGet($x): mixed {}
-        function offsetSet($x, $y) { throw new Exception; }
+        function offsetSet($x, $y): void { throw new Exception; }
-        function offsetExists($x) { return true; }
+        function offsetExists($x): bool { return true; }
-        function offsetUnset($x) {}
+        function offsetUnset($x): void {}
     };
     var_dump($foo[0] = new stdClass);
 } catch (Exception $e) { print "caught Exception 27\n"; }

Zend/tests/type_declarations/typed_properties_065.phpt

@@ -6,10 +6,10 @@ Typed property on by-ref array dimension
 $a = new class implements ArrayAccess {
     public int $foo = 1;
 
-    function offsetExists($o) { return 1; }
+    function offsetExists($o): bool { return 1; }
-    function &offsetGet($o) { return $this->foo; }
+    function &offsetGet($o): mixed { return $this->foo; }
-    function offsetSet($o, $v) { print "offsetSet($v)\n"; }
+    function offsetSet($o, $v): void { print "offsetSet($v)\n"; }
-    function offsetUnset($o) { print "offsetUnset() ?!?"; }
+    function offsetUnset($o): void { print "offsetUnset() ?!?"; }
 };
 
 $a[0] += 1;

Zend/zend_exceptions.stub.php

@@ -36,8 +36,8 @@ class Exception implements Throwable
 
     public function __construct(string $message = "", int $code = 0, ?Throwable $previous = null) {}
 
-    /** @return void */
+    /** @tentative-return-type */
-    public function __wakeup() {}
+    public function __wakeup(): void {}
 
     final public function getMessage(): string {}
 
@@ -92,10 +92,10 @@ class Error implements Throwable
     public function __construct(string $message = "", int $code = 0, ?Throwable $previous = null) {}
 
     /**
-     * @return void
+     * @tentative-return-type
      * @implementation-alias Exception::__wakeup
      */
-    public function __wakeup() {}
+    public function __wakeup(): void {}
 
     /** @implementation-alias Exception::getMessage */
     final public function getMessage(): string {}

Zend/zend_exceptions_arginfo.h

@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 9a9ce2975a7449a621d364beca646525fc56b294 */
+ * Stub hash: 48d8444730a0e1fbc5d81965733deb3d3c11e122 */
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_class_Throwable_getMessage, 0, 0, IS_STRING, 0)
 ZEND_END_ARG_INFO()
@@ -29,7 +29,8 @@ ZEND_BEGIN_ARG_INFO_EX(arginfo_class_Exception___construct, 0, 0, 0)
 	ZEND_ARG_OBJ_INFO_WITH_DEFAULT_VALUE(0, previous, Throwable, 1, "null")
 ZEND_END_ARG_INFO()
 
-#define arginfo_class_Exception___wakeup arginfo_class_Throwable_getCode
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_Exception___wakeup, 0, 0, IS_VOID, 0)
+ZEND_END_ARG_INFO()
 
 #define arginfo_class_Exception_getMessage arginfo_class_Throwable_getMessage
 
@@ -62,7 +63,7 @@ ZEND_END_ARG_INFO()
 
 #define arginfo_class_Error___construct arginfo_class_Exception___construct
 
-#define arginfo_class_Error___wakeup arginfo_class_Throwable_getCode
+#define arginfo_class_Error___wakeup arginfo_class_Exception___wakeup
 
 #define arginfo_class_Error_getMessage arginfo_class_Throwable_getMessage
 

Zend/zend_interfaces.stub.php

@@ -6,44 +6,44 @@ interface Traversable {}
 
 interface IteratorAggregate extends Traversable
 {
-    /** @return Traversable */
+    /** @tentative-return-type */
-    public function getIterator();
+    public function getIterator(): Traversable;
 }
 
 interface Iterator extends Traversable
 {
-    /** @return mixed */
+    /** @tentative-return-type */
-    public function current();
+    public function current(): mixed;
 
-    /** @return void */
+    /** @tentative-return-type */
-    public function next();
+    public function next(): void;
 
-    /** @return mixed */
+    /** @tentative-return-type */
-    public function key();
+    public function key(): mixed;
 
-    /** @return bool */
+    /** @tentative-return-type */
-    public function valid();
+    public function valid(): bool;
 
-    /** @return void */
+    /** @tentative-return-type */
-    public function rewind();
+    public function rewind(): void;
 }
 
 interface ArrayAccess
 {
-    /** @return bool */
+    /** @tentative-return-type */
-    public function offsetExists(mixed $offset);
+    public function offsetExists(mixed $offset): bool;
 
     /**
      * Actually this should be return by ref but atm cannot be.
-     * @return mixed
+     * @tentative-return-type
      */
-    public function offsetGet(mixed $offset);
+    public function offsetGet(mixed $offset): mixed;
 
-    /** @return void */
+    /** @tentative-return-type */
-    public function offsetSet(mixed $offset, mixed $value);
+    public function offsetSet(mixed $offset, mixed $value): void;
 
-    /** @return void */
+    /** @tentative-return-type */
-    public function offsetUnset(mixed $offset);
+    public function offsetUnset(mixed $offset): void;
 }
 
 interface Serializable
@@ -57,8 +57,8 @@ interface Serializable
 
 interface Countable
 {
-    /** @return int */
+    /** @tentative-return-type */
-    public function count();
+    public function count(): int;
 }
 
 interface Stringable
@@ -68,17 +68,15 @@ interface Stringable
 
 final class InternalIterator implements Iterator
 {
-    private function __construct();
+    private function __construct() {}
 
-    /** @return mixed */
+    public function current(): mixed {}
-    public function current();
 
-    /** @return mixed */
+    public function key(): mixed {}
-    public function key();
 
-    public function next(): void;
+    public function next(): void {}
 
-    public function valid(): bool;
+    public function valid(): bool {}
 
-    public function rewind(): void;
+    public function rewind(): void {}
 }

Zend/zend_interfaces_arginfo.h

@@ -1,48 +1,58 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 34aa50c74f10106c6abd0ed2956d41c98aae6452 */
+ * Stub hash: 339e326a82a7fd1e2ae419c8c86095e29028fbd6 */
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_class_IteratorAggregate_getIterator, 0, 0, 0)
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_OBJ_INFO_EX(arginfo_class_IteratorAggregate_getIterator, 0, 0, Traversable, 0)
 ZEND_END_ARG_INFO()
 
-#define arginfo_class_Iterator_current arginfo_class_IteratorAggregate_getIterator
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_Iterator_current, 0, 0, IS_MIXED, 0)
+ZEND_END_ARG_INFO()
 
-#define arginfo_class_Iterator_next arginfo_class_IteratorAggregate_getIterator
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_Iterator_next, 0, 0, IS_VOID, 0)
+ZEND_END_ARG_INFO()
 
-#define arginfo_class_Iterator_key arginfo_class_IteratorAggregate_getIterator
+#define arginfo_class_Iterator_key arginfo_class_Iterator_current
 
-#define arginfo_class_Iterator_valid arginfo_class_IteratorAggregate_getIterator
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_Iterator_valid, 0, 0, _IS_BOOL, 0)
+ZEND_END_ARG_INFO()
 
-#define arginfo_class_Iterator_rewind arginfo_class_IteratorAggregate_getIterator
+#define arginfo_class_Iterator_rewind arginfo_class_Iterator_next
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_class_ArrayAccess_offsetExists, 0, 0, 1)
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_ArrayAccess_offsetExists, 0, 1, _IS_BOOL, 0)
 	ZEND_ARG_TYPE_INFO(0, offset, IS_MIXED, 0)
 ZEND_END_ARG_INFO()
 
-#define arginfo_class_ArrayAccess_offsetGet arginfo_class_ArrayAccess_offsetExists
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_ArrayAccess_offsetGet, 0, 1, IS_MIXED, 0)
+	ZEND_ARG_TYPE_INFO(0, offset, IS_MIXED, 0)
+ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_class_ArrayAccess_offsetSet, 0, 0, 2)
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_ArrayAccess_offsetSet, 0, 2, IS_VOID, 0)
 	ZEND_ARG_TYPE_INFO(0, offset, IS_MIXED, 0)
 	ZEND_ARG_TYPE_INFO(0, value, IS_MIXED, 0)
 ZEND_END_ARG_INFO()
 
-#define arginfo_class_ArrayAccess_offsetUnset arginfo_class_ArrayAccess_offsetExists
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_ArrayAccess_offsetUnset, 0, 1, IS_VOID, 0)
+	ZEND_ARG_TYPE_INFO(0, offset, IS_MIXED, 0)
+ZEND_END_ARG_INFO()
 
-#define arginfo_class_Serializable_serialize arginfo_class_IteratorAggregate_getIterator
+ZEND_BEGIN_ARG_INFO_EX(arginfo_class_Serializable_serialize, 0, 0, 0)
+ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_INFO_EX(arginfo_class_Serializable_unserialize, 0, 0, 1)
 	ZEND_ARG_TYPE_INFO(0, data, IS_STRING, 0)
 ZEND_END_ARG_INFO()
 
-#define arginfo_class_Countable_count arginfo_class_IteratorAggregate_getIterator
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_Countable_count, 0, 0, IS_LONG, 0)
+ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_class_Stringable___toString, 0, 0, IS_STRING, 0)
 ZEND_END_ARG_INFO()
 
-#define arginfo_class_InternalIterator___construct arginfo_class_IteratorAggregate_getIterator
+#define arginfo_class_InternalIterator___construct arginfo_class_Serializable_serialize
 
-#define arginfo_class_InternalIterator_current arginfo_class_IteratorAggregate_getIterator
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_class_InternalIterator_current, 0, 0, IS_MIXED, 0)
+ZEND_END_ARG_INFO()
 
-#define arginfo_class_InternalIterator_key arginfo_class_IteratorAggregate_getIterator
+#define arginfo_class_InternalIterator_key arginfo_class_InternalIterator_current
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_class_InternalIterator_next, 0, 0, IS_VOID, 0)
 ZEND_END_ARG_INFO()

Zend/zend_weakrefs.stub.php

@@ -15,9 +15,7 @@ final class WeakReference
 /** @strict-properties */
 final class WeakMap implements ArrayAccess, Countable, IteratorAggregate
 {
-    /**
+    /** @param object $object */
-     * @param object $object
-     */
     public function offsetGet($object): mixed {}
 
     /** @param object $object */

Zend/zend_weakrefs_arginfo.h

@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 97fff017125955a3def85d9ed5a31746de7b808a */
+ * Stub hash: c849da0cac9ed05fedacf10ef57449a4596b3c07 */
 
 ZEND_BEGIN_ARG_INFO_EX(arginfo_class_WeakReference___construct, 0, 0, 0)
 ZEND_END_ARG_INFO()

ext/opcache/tests/bug77275.phpt

@@ -10,10 +10,10 @@ opcache
 namespace Foo;
 class Bar { public function get() {} }
 class Record implements \ArrayAccess {
-    public function offsetSet($offset, $value) { throw new \Exception; }
+    public function offsetSet($offset, $value): void { throw new \Exception; }
-    public function offsetGet($offset) { var_dump($offset); }
+    public function offsetGet($offset): mixed { var_dump($offset); return null; }
-    public function offsetExists($offset) { throw new \Exception; }
+    public function offsetExists($offset): bool { throw new \Exception; }
-    public function offsetUnset($offset) { throw new \Exception; }
+    public function offsetUnset($offset): void { throw new \Exception; }
 }
 class Baz {
     public function run() {

ext/phar/tests/bug45218_SLOWTEST.phpt

@@ -19,21 +19,22 @@ class myIterator implements Iterator
     var $a;
     var $count = 1;
 
-    function next() {
+    function next(): void {
-        return (++$this->count < 3000) ? 'f' . $this->count : false;
+        ++$this->count;
     }
-    function current() {
+    function current(): mixed {
         if (($this->count % 100) === 0) {
             echo $this->count, "\n";
         }
         return $GLOBALS['fname2'];
     }
-    function key() {
+    function key(): mixed {
         return 'f' . $this->count;
     }
-    function valid() {
+    function valid(): bool {
         return $this->count < 3000;
     }
+    #[ReturnTypeWillChange]
     function rewind() {
         $this->count = 1;
         return $GLOBALS['fname2'];

ext/phar/tests/phar_buildfromiterator4.phpt

@@ -14,25 +14,25 @@ class myIterator implements Iterator
     {
         $this->a = $a;
     }
-    function next() {
+    function next(): void {
         echo "next\n";
-        return next($this->a);
+        next($this->a);
     }
-    function current() {
+    function current(): mixed {
         echo "current\n";
         return current($this->a);
     }
-    function key() {
+    function key(): mixed {
         echo "key\n";
         return key($this->a);
     }
-    function valid() {
+    function valid(): bool {
         echo "valid\n";
         return current($this->a);
     }
-    function rewind() {
+    function rewind(): void {
         echo "rewind\n";
-        return reset($this->a);
+        reset($this->a);
     }
 }
 try {

ext/phar/tests/phar_buildfromiterator5.phpt

@@ -14,25 +14,25 @@ class myIterator implements Iterator
     {
         $this->a = $a;
     }
-    function next() {
+    function next(): void {
         echo "next\n";
-        return next($this->a);
+        next($this->a);
     }
-    function current() {
+    function current(): mixed {
         echo "current\n";
         return current($this->a);
     }
-    function key() {
+    function key(): mixed {
         echo "key\n";
         return key($this->a);
     }
-    function valid() {
+    function valid(): bool {
         echo "valid\n";
-        return current($this->a);
+        return is_object(current($this->a));
     }
-    function rewind() {
+    function rewind(): void {
         echo "rewind\n";
-        return reset($this->a);
+        reset($this->a);
     }
 }
 try {

ext/phar/tests/phar_buildfromiterator6.phpt

@@ -14,25 +14,25 @@ class myIterator implements Iterator
     {
         $this->a = $a;
     }
-    function next() {
+    function next(): void {
         echo "next\n";
-        return next($this->a);
+        next($this->a);
     }
-    function current() {
+    function current(): mixed {
         echo "current\n";
         return current($this->a);
     }
-    function key() {
+    function key(): mixed {
         echo "key\n";
         return key($this->a);
     }
-    function valid() {
+    function valid(): bool {
         echo "valid\n";
         return current($this->a);
     }
-    function rewind() {
+    function rewind(): void {
         echo "rewind\n";
-        return reset($this->a);
+        reset($this->a);
     }
 }
 try {

ext/phar/tests/phar_buildfromiterator7.phpt

@@ -14,25 +14,25 @@ class myIterator implements Iterator
     {
         $this->a = $a;
     }
-    function next() {
+    function next(): void {
         echo "next\n";
-        return next($this->a);
+        next($this->a);
     }
-    function current() {
+    function current(): mixed {
         echo "current\n";
         return current($this->a);
     }
-    function key() {
+    function key(): mixed {
         echo "key\n";
         return key($this->a);
     }
-    function valid() {
+    function valid(): bool {
         echo "valid\n";
         return current($this->a);
     }
-    function rewind() {
+    function rewind(): void {
         echo "rewind\n";
-        return reset($this->a);
+        reset($this->a);
     }
 }
 try {

ext/phar/tests/phar_buildfromiterator9.phpt

@@ -14,25 +14,25 @@ class myIterator implements Iterator
     {
         $this->a = $a;
     }
-    function next() {
+    function next(): void {
         echo "next\n";
-        return next($this->a);
+        next($this->a);
     }
-    function current() {
+    function current(): mixed {
         echo "current\n";
         return current($this->a);
     }
-    function key() {
+    function key(): mixed {
         echo "key\n";
         return key($this->a);
     }
-    function valid() {
+    function valid(): bool {
         echo "valid\n";
-        return current($this->a);
+        return (bool) current($this->a);
     }
-    function rewind() {
+    function rewind(): void {
         echo "rewind\n";
-        return reset($this->a);
+        reset($this->a);
     }
 }
 try {

ext/phar/tests/tar/phar_buildfromiterator4.phpt

@@ -14,25 +14,25 @@ class myIterator implements Iterator
     {
         $this->a = $a;
     }
-    function next() {
+    function next(): void {
         echo "next\n";
-        return next($this->a);
+        next($this->a);
     }
-    function current() {
+    function current(): mixed {
         echo "current\n";
         return current($this->a);
     }
-    function key() {
+    function key(): mixed {
         echo "key\n";
         return key($this->a);
     }
-    function valid() {
+    function valid(): bool {
         echo "valid\n";
         return current($this->a);
     }
-    function rewind() {
+    function rewind(): void {
         echo "rewind\n";
-        return reset($this->a);
+        reset($this->a);
     }
 }
 try {

ext/phar/tests/tar/phar_buildfromiterator5.phpt

@@ -14,25 +14,25 @@ class myIterator implements Iterator
     {
         $this->a = $a;
     }
-    function next() {
+    function next(): void {
         echo "next\n";
-        return next($this->a);
+        next($this->a);
     }
-    function current() {
+    function current(): mixed {
         echo "current\n";
         return current($this->a);
     }
-    function key() {
+    function key(): mixed {
         echo "key\n";
         return key($this->a);
     }
-    function valid() {
+    function valid(): bool {
         echo "valid\n";
-        return current($this->a);
+        return (bool) current($this->a);
     }
-    function rewind() {
+    function rewind(): void {
         echo "rewind\n";
-        return reset($this->a);
+        reset($this->a);
     }
 }
 try {

ext/phar/tests/tar/phar_buildfromiterator6.phpt

@@ -14,25 +14,25 @@ class myIterator implements Iterator
     {
         $this->a = $a;
     }
-    function next() {
+    function next(): void {
         echo "next\n";
-        return next($this->a);
+        next($this->a);
     }
-    function current() {
+    function current(): mixed {
         echo "current\n";
         return current($this->a);
     }
-    function key() {
+    function key(): mixed {
         echo "key\n";
         return key($this->a);
     }
-    function valid() {
+    function valid(): bool {
         echo "valid\n";
         return current($this->a);
     }
-    function rewind() {
+    function rewind(): void {
         echo "rewind\n";
-        return reset($this->a);
+        reset($this->a);
     }
 }
 try {

ext/phar/tests/tar/phar_buildfromiterator7.phpt

@@ -14,25 +14,25 @@ class myIterator implements Iterator
     {
         $this->a = $a;
     }
-    function next() {
+    function next(): void {
         echo "next\n";
-        return next($this->a);
+        next($this->a);
     }
-    function current() {
+    function current(): mixed {
         echo "current\n";
         return current($this->a);
     }
-    function key() {
+    function key(): mixed {
         echo "key\n";
         return key($this->a);
     }
-    function valid() {
+    function valid(): bool {
         echo "valid\n";
         return current($this->a);
     }
-    function rewind() {
+    function rewind(): void {
         echo "rewind\n";
-        return reset($this->a);
+        reset($this->a);
     }
 }
 try {

ext/phar/tests/tar/phar_buildfromiterator9.phpt

@@ -14,25 +14,25 @@ class myIterator implements Iterator
     {
         $this->a = $a;
     }
-    function next() {
+    function next(): void {
         echo "next\n";
-        return next($this->a);
+        next($this->a);
     }
-    function current() {
+    function current(): mixed {
         echo "current\n";
         return current($this->a);
     }
-    function key() {
+    function key(): mixed {
         echo "key\n";
         return key($this->a);
     }
-    function valid() {
+    function valid(): bool {
         echo "valid\n";
-        return current($this->a);
+        return (bool) current($this->a);
     }
-    function rewind() {
+    function rewind(): void {
         echo "rewind\n";
-        return reset($this->a);
+        reset($this->a);
     }
 }
 try {

ext/phar/tests/zip/phar_buildfromiterator4.phpt

@@ -14,25 +14,25 @@ class myIterator implements Iterator
     {
         $this->a = $a;
     }
-    function next() {
+    function next(): void {
         echo "next\n";
-        return next($this->a);
+        next($this->a);
     }
-    function current() {
+    function current(): mixed {
         echo "current\n";
         return current($this->a);
     }
-    function key() {
+    function key(): mixed {
         echo "key\n";
         return key($this->a);
     }
-    function valid() {
+    function valid(): bool {
         echo "valid\n";
         return current($this->a);
     }
-    function rewind() {
+    function rewind(): void {
         echo "rewind\n";
-        return reset($this->a);
+        reset($this->a);
     }
 }
 try {

ext/phar/tests/zip/phar_buildfromiterator5.phpt

@@ -14,25 +14,25 @@ class myIterator implements Iterator
     {
         $this->a = $a;
     }
-    function next() {
+    function next(): void {
         echo "next\n";
-        return next($this->a);
+        next($this->a);
     }
-    function current() {
+    function current(): mixed {
         echo "current\n";
         return current($this->a);
     }
-    function key() {
+    function key(): mixed {
         echo "key\n";
         return key($this->a);
     }
-    function valid() {
+    function valid(): bool {
         echo "valid\n";
-        return current($this->a);
+        return is_object(current($this->a));
     }
-    function rewind() {
+    function rewind(): void {
         echo "rewind\n";
-        return reset($this->a);
+        reset($this->a);
     }
 }
 try {

ext/phar/tests/zip/phar_buildfromiterator6.phpt

@@ -14,25 +14,25 @@ class myIterator implements Iterator
     {
         $this->a = $a;
     }
-    function next() {
+    function next(): void {
         echo "next\n";
-        return next($this->a);
+        next($this->a);
     }
-    function current() {
+    function current(): mixed {
         echo "current\n";
         return current($this->a);
     }
-    function key() {
+    function key(): mixed {
         echo "key\n";
         return key($this->a);
     }
-    function valid() {
+    function valid(): bool {
         echo "valid\n";
         return current($this->a);
     }
-    function rewind() {
+    function rewind(): void {
         echo "rewind\n";
-        return reset($this->a);
+        reset($this->a);
     }
 }
 try {

ext/phar/tests/zip/phar_buildfromiterator7.phpt

@@ -14,25 +14,25 @@ class myIterator implements Iterator
     {
         $this->a = $a;
     }
-    function next() {
+    function next(): void {
         echo "next\n";
-        return next($this->a);
+        next($this->a);
     }
-    function current() {
+    function current(): mixed {
         echo "current\n";
         return current($this->a);
     }
-    function key() {
+    function key(): mixed {
         echo "key\n";
         return key($this->a);
     }
-    function valid() {
+    function valid(): bool {
         echo "valid\n";
         return current($this->a);
     }
-    function rewind() {
+    function rewind(): void {
         echo "rewind\n";
-        return reset($this->a);
+        reset($this->a);
     }
 }
 try {

ext/phar/tests/zip/phar_buildfromiterator9.phpt

@@ -14,25 +14,25 @@ class myIterator implements Iterator
     {
         $this->a = $a;
     }
-    function next() {
+    function next(): void {
         echo "next\n";
-        return next($this->a);
+        next($this->a);
     }
-    function current() {
+    function current(): mixed {
         echo "current\n";
         return current($this->a);
     }
-    function key() {
+    function key(): mixed {
         echo "key\n";
         return key($this->a);
     }
-    function valid() {
+    function valid(): bool {
         echo "valid\n";
-        return current($this->a);
+        return is_resource(current($this->a));
     }
-    function rewind() {
+    function rewind(): void {
         echo "rewind\n";
-        return reset($this->a);
+        reset($this->a);
     }
 }
 try {

ext/reflection/tests/ReflectionClass_isIterateable_001.phpt

@@ -10,14 +10,14 @@ Interface ExtendsIterator extends Iterator {
 Interface ExtendsIteratorAggregate extends IteratorAggregate {
 }
 Class IteratorImpl implements Iterator {
-    public function next() {}
+    public function next(): void {}
-    public function key() {}
+    public function key(): mixed {}
-    public function rewind() {}
+    public function rewind(): void {}
-    public function current() {}
+    public function current(): mixed {}
-    public function valid() {}
+    public function valid(): bool {}
 }
 Class IteratorAggregateImpl implements IteratorAggregate {
-    public function getIterator() {}
+    public function getIterator(): Traversable {}
 }
 Class ExtendsIteratorImpl extends IteratorImpl {
 }

ext/reflection/tests/ReflectionClass_isIterateable_basic.phpt

@@ -7,11 +7,11 @@ Felix De Vliegher <felix.devliegher@gmail.com>, Marc Veldman <marc@ibuildings.nl
 
 class IteratorClass implements Iterator {
     public function __construct() { }
-    public function key() {}
+    public function key(): mixed {}
-    public function current() {}
+    public function current(): mixed {}
-    function next()	{}
+    function next(): void {}
-    function valid() {}
+    function valid(): bool {}
-    function rewind() {}
+    function rewind(): void {}
 }
 class DerivedClass extends IteratorClass {}
 class NonIterator {}

ext/reflection/tests/intersection_types.phpt

@@ -29,7 +29,7 @@ dumpType($rp->getType());
 
 interface y {}
 class x implements Y, Countable {
-    public function count() {}
+    public function count(): int { return 0; }
 }
 $test = new Test;
 $test->prop = new x;

ext/soap/tests/server031.phpt

@@ -13,11 +13,11 @@ class ItemArray implements Iterator {
         $this->a = $a;
     }
 
-    public function rewind()    { return reset($this->a); }
+    public function rewind(): void    { reset($this->a); }
-    public function current()   { return current($this->a); }
+    public function current(): mixed   { return current($this->a); }
-    public function key()       { return key($this->a); }
+    public function key(): mixed       { return key($this->a); }
-    public function next()      { return next($this->a); }
+    public function next(): void      { next($this->a); }
-    public function valid()     { return (current($this->a) !== false); }
+    public function valid(): bool     { return (current($this->a) !== false); }
 }
 
 class Item {

ext/spl/spl_directory.stub.php

@@ -123,10 +123,10 @@ class DirectoryIterator extends SplFileInfo implements SeekableIterator
     public function valid(): bool {}
 
     /** @return int */
-    public function key() {} // TODO change return type to string
+    public function key(): mixed {} // TODO change return type to string
 
     /** @return DirectoryIterator */
-    public function current() {} // TODO fix return type so that FilesystemIterator::current() remains compatible
+    public function current(): mixed {} // TODO narrow return type
 
     /** @tentative-return-type */
     public function next(): void {}

ext/spl/spl_directory_arginfo.h

@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: fcfc6e8120dff87ab81d9b5491f27e695b3790f4 */
+ * Stub hash: 7c64c21963df5a11e902298eb5957b868c4b48cf */
 
 ZEND_BEGIN_ARG_INFO_EX(arginfo_class_SplFileInfo___construct, 0, 0, 1)
 	ZEND_ARG_TYPE_INFO(0, filename, IS_STRING, 0)
@@ -102,7 +102,7 @@ ZEND_END_ARG_INFO()
 
 #define arginfo_class_DirectoryIterator_valid arginfo_class_SplFileInfo_isWritable
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_class_DirectoryIterator_key, 0, 0, 0)
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_class_DirectoryIterator_key, 0, 0, IS_MIXED, 0)
 ZEND_END_ARG_INFO()
 
 #define arginfo_class_DirectoryIterator_current arginfo_class_DirectoryIterator_key

ext/spl/tests/RecursiveIteratorIterator_invalid_aggregate.phpt

@@ -4,6 +4,7 @@ RecursiveIteratorIterator constructor should thrown if IteratorAggregate does no
 <?php
 
 class MyIteratorAggregate implements IteratorAggregate {
+    #[ReturnTypeWillChange]
     function getIterator() {
         return null;
     }

ext/spl/tests/array_005.phpt

@@ -69,7 +69,7 @@ class StudentList implements IteratorAggregate
         return false;
     }
 
-    public function getIterator() {
+    public function getIterator(): Traversable {
         return $this->students->getIterator();
     }
 }

ext/spl/tests/array_007.phpt

@@ -18,7 +18,7 @@ class test implements IteratorAggregate
         $this->imp = "implicit";
     }
 
-    function getIterator()
+    function getIterator(): Traversable
     {
         $it = new ArrayObject($this);
         return $it->getIterator();

ext/spl/tests/bug52238.phpt

@@ -8,7 +8,7 @@ class Foo implements IteratorAggregate
         throw new Exception;
     }
 
-    public function getIterator() {
+    public function getIterator(): Traversable {
         return new ArrayIterator($this->bar());
     }
 }

ext/spl/tests/bug65328.phpt

@@ -65,7 +65,7 @@ class Tree
     /**
      * @return \RecursiveIteratorIterator
      */
-    public function getIterator()
+    public function getIterator(): Traversable
     {
         return new \RecursiveIteratorIterator(
             $this->head->getChildren(),

ext/spl/tests/countable_class_basic1.phpt

@@ -24,6 +24,7 @@ Interface [ <internal%s> interface Countable ] {
 
       - Parameters [0] {
       }
+      - Tentative return [ int ]
     }
   }
 }

ext/spl/tests/countable_count_variation1.phpt

@@ -4,29 +4,34 @@ SPL: Countable::count() with wrong return types and exception.
 <?php
 
 Class returnNull implements Countable {
-    function count() {
+    function count(): int {
+        return 0;
     }
 }
 
 Class returnString implements Countable {
+    #[ReturnTypeWillChange]
     function count() {
         return "hello";
     }
 }
 
 Class returnObject implements Countable {
+    #[ReturnTypeWillChange]
     function count() {
         return new returnObject;
     }
 }
 
 Class returnArray implements Countable {
+    #[ReturnTypeWillChange]
     function count() {
         return array(1,2,3);
     }
 }
 
 Class throwException implements Countable {
+    #[ReturnTypeWillChange]
     function count() {
         throw new Exception('Thrown from count');
     }

ext/spl/tests/dualiterator.inc

@@ -83,14 +83,14 @@ class DualIterator implements Iterator
 
     /** @return whether both inner iterators are valid
      */
-    function valid()
+    function valid(): bool
     {
         return $this->lhs->valid() && $this->rhs->valid();
     }
 
     /** @return current value depending on CURRENT_* flags
      */
-    function current()
+    function current(): mixed
     {
         switch($this->flags & 0x0F)
         {
@@ -108,7 +108,7 @@ class DualIterator implements Iterator
 
     /** @return key value depending on KEY_* flags
      */
-    function key()
+    function key(): mixed
     {
         switch($this->flags & 0xF0)
         {
@@ -124,7 +124,7 @@ class DualIterator implements Iterator
 
     /** move both inner iterators forward
      */
-    function next()
+    function next(): void
     {
         $this->lhs->next();
         $this->rhs->next();

ext/spl/tests/iterator_003.phpt

@@ -69,7 +69,7 @@ class StudentList implements IteratorAggregate
         return false;
     }
 
-    public function getIterator() {
+    public function getIterator(): Traversable {
         return new CachingIterator($this->students->getIterator(), true);
     }
 }

ext/spl/tests/observer_002.phpt

@@ -79,7 +79,7 @@ class SubjectImpl implements SplSubject
         $this->observers->detach($observer);
     }
 
-    function count()
+    function count(): int
     {
         return $this->observers->count();
     }

ext/spl/tests/recursive_tree_iterator_006.phpt

@@ -27,7 +27,7 @@ class RecursiveArrayIteratorAggregated implements IteratorAggregate {
     function __construct($it) {
         $this->it = new RecursiveArrayIterator($it);
     }
-    function getIterator() {
+    function getIterator(): Traversable {
         return $this->it;
     }
 }

ext/spl/tests/recursive_tree_iterator_007.phpt

@@ -12,7 +12,7 @@ class RecursiveArrayIteratorAggregated implements IteratorAggregate {
     function __construct($it) {
         $this->it = new RecursiveArrayIterator($it);
     }
-    function getIterator() {
+    function getIterator(): Traversable {
         return $this->it;
     }
 }

ext/spl/tests/regexiterator_getpregflags.phpt

@@ -8,11 +8,11 @@ Lance Kesson jac_kesson@hotmail.com
 
 class myIterator implements Iterator {
 
-function current (){}
+function current (): mixed { return null; }
-function key ( ){}
+function key ( ): mixed { return ""; }
-function next ( ){}
+function next ( ): void {}
-function rewind ( ){}
+function rewind ( ): void {}
-function valid ( ){}
+function valid ( ): bool {}
 
 
 }

ext/spl/tests/regexiterator_setpregflags.phpt

@@ -8,11 +8,11 @@ Lance Kesson jac_kesson@hotmail.com
 
 class myIterator implements Iterator {
 
-function current (){}
+function current (): mixed{ return null;}
-function key ( ){}
+function key ( ): mixed{ return "";}
-function next ( ){}
+function next ( ): void{}
-function rewind ( ){}
+function rewind ( ): void{}
-function valid ( ){}
+function valid ( ): bool{}
 
 
 }

ext/spl/tests/spl_002.phpt

@@ -5,7 +5,7 @@ SPL: Countable
 
 class Test implements Countable
 {
-    function count()
+    function count(): int
     {
         return 4;
     }

ext/standard/tests/array/bug43505.phpt

@@ -5,6 +5,7 @@ error_reporting=0
 --FILE--
 <?php
 class Test implements Countable {
+    #[ReturnTypeWillChange]
     public function count() {
         return $some;
     }