diff --git a/Zend/zend_observer.c b/Zend/zend_observer.c
index 80d1fbd1876..f699ea714d8 100644
--- a/Zend/zend_observer.c
+++ b/Zend/zend_observer.c
@@ -301,7 +301,7 @@ ZEND_API void zend_observer_function_declared_register(zend_observer_function_de
 	zend_llist_add_element(&zend_observer_function_declared_callbacks, &cb);
 }
 
-ZEND_API void ZEND_FASTCALL zend_observer_function_declared_notify(zend_op_array *op_array, zend_string *name)
+ZEND_API void ZEND_FASTCALL _zend_observer_function_declared_notify(zend_op_array *op_array, zend_string *name)
 {
 	if (CG(compiler_options) & ZEND_COMPILE_IGNORE_OBSERVER) {
 		return;
@@ -319,7 +319,7 @@ ZEND_API void zend_observer_class_linked_register(zend_observer_class_linked_cb
 	zend_llist_add_element(&zend_observer_class_linked_callbacks, &cb);
 }
 
-ZEND_API void ZEND_FASTCALL zend_observer_class_linked_notify(zend_class_entry *ce, zend_string *name)
+ZEND_API void ZEND_FASTCALL _zend_observer_class_linked_notify(zend_class_entry *ce, zend_string *name)
 {
 	if (CG(compiler_options) & ZEND_COMPILE_IGNORE_OBSERVER) {
 		return;
@@ -337,7 +337,7 @@ ZEND_API void zend_observer_error_register(zend_observer_error_cb cb)
 	zend_llist_add_element(&zend_observer_error_callbacks, &cb);
 }
 
-void zend_observer_error_notify(int type, zend_string *error_filename, uint32_t error_lineno, zend_string *message)
+ZEND_API void _zend_observer_error_notify(int type, zend_string *error_filename, uint32_t error_lineno, zend_string *message)
 {
 	for (zend_llist_element *element = zend_observer_error_callbacks.head; element; element = element->next) {
 		zend_observer_error_cb callback = *(zend_observer_error_cb *) (element->data);
diff --git a/Zend/zend_observer.h b/Zend/zend_observer.h
index 0cd660db7e5..fc4d9a62c89 100644
--- a/Zend/zend_observer.h
+++ b/Zend/zend_observer.h
@@ -84,17 +84,34 @@ ZEND_API void ZEND_FASTCALL zend_observer_fcall_end(
 ZEND_API void zend_observer_fcall_end_all(void);
 
 typedef void (*zend_observer_function_declared_cb)(zend_op_array *op_array, zend_string *name);
-typedef void (*zend_observer_class_linked_cb)(zend_class_entry *ce, zend_string *name);
 
 ZEND_API void zend_observer_function_declared_register(zend_observer_function_declared_cb cb);
-ZEND_API void ZEND_FASTCALL zend_observer_function_declared_notify(zend_op_array *op_array, zend_string *name);
+ZEND_API void ZEND_FASTCALL _zend_observer_function_declared_notify(zend_op_array *op_array, zend_string *name);
+static inline void zend_observer_function_declared_notify(zend_op_array *op_array, zend_string *name) {
+    if (UNEXPECTED(zend_observer_function_declared_observed)) {
+		_zend_observer_function_declared_notify(op_array, name);
+	}
+}
+
+typedef void (*zend_observer_class_linked_cb)(zend_class_entry *ce, zend_string *name);
+
 ZEND_API void zend_observer_class_linked_register(zend_observer_class_linked_cb cb);
-ZEND_API void ZEND_FASTCALL zend_observer_class_linked_notify(zend_class_entry *ce, zend_string *name);
+ZEND_API void ZEND_FASTCALL _zend_observer_class_linked_notify(zend_class_entry *ce, zend_string *name);
+static inline void zend_observer_class_linked_notify(zend_class_entry *ce, zend_string *name) {
+	if (UNEXPECTED(zend_observer_class_linked_observed)) {
+		_zend_observer_class_linked_notify(ce, name);
+	}
+}
 
 typedef void (*zend_observer_error_cb)(int type, zend_string *error_filename, uint32_t error_lineno, zend_string *message);
 
 ZEND_API void zend_observer_error_register(zend_observer_error_cb callback);
-void zend_observer_error_notify(int type, zend_string *error_filename, uint32_t error_lineno, zend_string *message);
+ZEND_API void _zend_observer_error_notify(int type, zend_string *error_filename, uint32_t error_lineno, zend_string *message);
+static inline void zend_observer_error_notify(int type, zend_string *error_filename, uint32_t error_lineno, zend_string *message) {
+	if (UNEXPECTED(zend_observer_errors_observed)) {
+		_zend_observer_error_notify(type, error_filename, error_lineno, message);
+	}
+}
 
 typedef void (*zend_observer_fiber_init_handler)(zend_fiber_context *initializing);
 typedef void (*zend_observer_fiber_switch_handler)(zend_fiber_context *from, zend_fiber_context *to);
diff --git a/ext/opcache/zend_accelerator_util_funcs.c b/ext/opcache/zend_accelerator_util_funcs.c
index f0fb9cc56b9..8363fe247d8 100644
--- a/ext/opcache/zend_accelerator_util_funcs.c
+++ b/ext/opcache/zend_accelerator_util_funcs.c
@@ -160,7 +160,7 @@ static void zend_accel_function_hash_copy(HashTable *target, HashTable *source)
 		}
 		_zend_hash_append_ptr_ex(target, p->key, Z_PTR(p->val), 1);
 		if (UNEXPECTED(call_observers) && *ZSTR_VAL(p->key)) { // if not rtd key
-			zend_observer_function_declared_notify(Z_PTR(p->val), p->key);
+			_zend_observer_function_declared_notify(Z_PTR(p->val), p->key);
 		}
 	}
 	target->nInternalPointer = 0;
@@ -224,19 +224,18 @@ static void zend_accel_class_hash_copy(HashTable *target, HashTable *source)
 			}
 		} else {
 			zend_class_entry *ce = Z_PTR(p->val);
-			t = _zend_hash_append_ptr_ex(target, p->key, Z_PTR(p->val), 1);
+			_zend_hash_append_ptr_ex(target, p->key, Z_PTR(p->val), 1);
 			if ((ce->ce_flags & ZEND_ACC_LINKED)
 			 && ZSTR_HAS_CE_CACHE(ce->name)
 			 && ZSTR_VAL(p->key)[0]) {
 				ZSTR_SET_CE_CACHE_EX(ce->name, ce, 0);
 				if (UNEXPECTED(call_observers)) {
-					zend_observer_class_linked_notify(ce, p->key);
+					_zend_observer_class_linked_notify(ce, p->key);
 				}
 			}
 		}
 	}
 	target->nInternalPointer = 0;
-	return;
 }
 
 void zend_accel_build_delayed_early_binding_list(zend_persistent_script *persistent_script)