diff --git a/ext/xsl/php_xsl.stub.php b/ext/xsl/php_xsl.stub.php
index 6f52e5570e1..de350acfce8 100644
--- a/ext/xsl/php_xsl.stub.php
+++ b/ext/xsl/php_xsl.stub.php
@@ -6,49 +6,49 @@ class XSLTProcessor
 {
     /**
      * @param DOMDocument|SimpleXMLElement $stylesheet
-     * @return bool
+     * @tentative-return-type
      */
-    public function importStylesheet(object $stylesheet) {}
+    public function importStylesheet(object $stylesheet): bool {}
 
     /**
      * @param DOMDocument|SimpleXMLElement $document
-     * @return DOMDocument|false
+     * @tentative-return-type
      */
-    public function transformToDoc(object $document, ?string $returnClass = null) {}
+    public function transformToDoc(object $document, ?string $returnClass = null): DOMDocument|false {}
 
     /**
      * @param DOMDocument|SimpleXMLElement $document
-     * @return int
+     * @tentative-return-type
      */
-    public function transformToUri(object $document, string $uri) {}
+    public function transformToUri(object $document, string $uri): int {}
 
     /**
      * @param DOMDocument|SimpleXMLElement $document
-     * @return string|false|null
+     * @tentative-return-type
      */
-    public function transformToXml(object $document) {}
+    public function transformToXml(object $document): string|null|false {}
+
+    /** @tentative-return-type */
+    public function setParameter(string $namespace, array|string $name, ?string $value = null): bool {}
+
+    /** @tentative-return-type */
+    public function getParameter(string $namespace, string $name): string|false {}
+
+    /** @tentative-return-type */
+    public function removeParameter(string $namespace, string $name): bool {}
+
+    /** @tentative-return-type */
+    public function hasExsltSupport(): bool {}
+
+    /** @tentative-return-type */
+    public function registerPHPFunctions(array|string|null $functions = null): void {}
 
     /** @return bool */
-    public function setParameter(string $namespace, array|string $name, ?string $value = null) {}
+    public function setProfiling(?string $filename) {} // TODO make the return type void
 
-    /** @return string|false */
-    public function getParameter(string $namespace, string $name) {}
+    /** @tentative-return-type */
+    public function setSecurityPrefs(int $preferences): int {}
 
-    /** @return bool */
-    public function removeParameter(string $namespace, string $name) {}
-
-    /** @return bool */
-    public function hasExsltSupport() {}
-
-    /** @return void */
-    public function registerPHPFunctions(array|string|null $functions = null) {}
-
-    /** @return bool */
-    public function setProfiling(?string $filename) {}
-
-    /** @return int */
-    public function setSecurityPrefs(int $preferences) {}
-
-    /** @return int */
-    public function getSecurityPrefs() {}
+    /** @tentative-return-type */
+    public function getSecurityPrefs(): int {}
 }
diff --git a/ext/xsl/php_xsl_arginfo.h b/ext/xsl/php_xsl_arginfo.h
index f5be7aa731d..11c96cdf062 100644
--- a/ext/xsl/php_xsl_arginfo.h
+++ b/ext/xsl/php_xsl_arginfo.h
@@ -1,41 +1,44 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: bcc89ca2603d60a9832704809fd8ab3834e79f74 */
+ * Stub hash: 7c920913c15c9cd663f19f7ec5ad81648d6eddbc */
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_class_XSLTProcessor_importStylesheet, 0, 0, 1)
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_XSLTProcessor_importStylesheet, 0, 1, _IS_BOOL, 0)
 	ZEND_ARG_TYPE_INFO(0, stylesheet, IS_OBJECT, 0)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_class_XSLTProcessor_transformToDoc, 0, 0, 1)
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_OBJ_TYPE_MASK_EX(arginfo_class_XSLTProcessor_transformToDoc, 0, 1, DOMDocument, MAY_BE_FALSE)
 	ZEND_ARG_TYPE_INFO(0, document, IS_OBJECT, 0)
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, returnClass, IS_STRING, 1, "null")
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_class_XSLTProcessor_transformToUri, 0, 0, 2)
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_XSLTProcessor_transformToUri, 0, 2, IS_LONG, 0)
 	ZEND_ARG_TYPE_INFO(0, document, IS_OBJECT, 0)
 	ZEND_ARG_TYPE_INFO(0, uri, IS_STRING, 0)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_class_XSLTProcessor_transformToXml, 0, 0, 1)
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_MASK_EX(arginfo_class_XSLTProcessor_transformToXml, 0, 1, MAY_BE_STRING|MAY_BE_NULL|MAY_BE_FALSE)
 	ZEND_ARG_TYPE_INFO(0, document, IS_OBJECT, 0)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_class_XSLTProcessor_setParameter, 0, 0, 2)
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_XSLTProcessor_setParameter, 0, 2, _IS_BOOL, 0)
 	ZEND_ARG_TYPE_INFO(0, namespace, IS_STRING, 0)
 	ZEND_ARG_TYPE_MASK(0, name, MAY_BE_ARRAY|MAY_BE_STRING, NULL)
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, value, IS_STRING, 1, "null")
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_class_XSLTProcessor_getParameter, 0, 0, 2)
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_MASK_EX(arginfo_class_XSLTProcessor_getParameter, 0, 2, MAY_BE_STRING|MAY_BE_FALSE)
 	ZEND_ARG_TYPE_INFO(0, namespace, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO(0, name, IS_STRING, 0)
 ZEND_END_ARG_INFO()
 
-#define arginfo_class_XSLTProcessor_removeParameter arginfo_class_XSLTProcessor_getParameter
-
-ZEND_BEGIN_ARG_INFO_EX(arginfo_class_XSLTProcessor_hasExsltSupport, 0, 0, 0)
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_XSLTProcessor_removeParameter, 0, 2, _IS_BOOL, 0)
+	ZEND_ARG_TYPE_INFO(0, namespace, IS_STRING, 0)
+	ZEND_ARG_TYPE_INFO(0, name, IS_STRING, 0)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_class_XSLTProcessor_registerPHPFunctions, 0, 0, 0)
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_XSLTProcessor_hasExsltSupport, 0, 0, _IS_BOOL, 0)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_XSLTProcessor_registerPHPFunctions, 0, 0, IS_VOID, 0)
 	ZEND_ARG_TYPE_MASK(0, functions, MAY_BE_ARRAY|MAY_BE_STRING|MAY_BE_NULL, "null")
 ZEND_END_ARG_INFO()
 
@@ -43,11 +46,12 @@ ZEND_BEGIN_ARG_INFO_EX(arginfo_class_XSLTProcessor_setProfiling, 0, 0, 1)
 	ZEND_ARG_TYPE_INFO(0, filename, IS_STRING, 1)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_class_XSLTProcessor_setSecurityPrefs, 0, 0, 1)
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_XSLTProcessor_setSecurityPrefs, 0, 1, IS_LONG, 0)
 	ZEND_ARG_TYPE_INFO(0, preferences, IS_LONG, 0)
 ZEND_END_ARG_INFO()
 
-#define arginfo_class_XSLTProcessor_getSecurityPrefs arginfo_class_XSLTProcessor_hasExsltSupport
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_XSLTProcessor_getSecurityPrefs, 0, 0, IS_LONG, 0)
+ZEND_END_ARG_INFO()
 
 
 ZEND_METHOD(XSLTProcessor, importStylesheet);