diff --git a/Zend/tests/enum/__wakeup.phpt b/Zend/tests/enum/__wakeup.phpt
index 8aea17ae53fd3..57b575e89f427 100644
--- a/Zend/tests/enum/__wakeup.phpt
+++ b/Zend/tests/enum/__wakeup.phpt
@@ -13,4 +13,6 @@ enum Foo {
 
 ?>
 --EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
+
 Fatal error: Enum Foo cannot include magic method __wakeup in %s on line %d
diff --git a/Zend/tests/serialize/bug34045.phpt b/Zend/tests/serialize/bug34045.phpt
index 61886cf354b67..79625a82a7b8f 100644
--- a/Zend/tests/serialize/bug34045.phpt
+++ b/Zend/tests/serialize/bug34045.phpt
@@ -24,5 +24,6 @@ $db_str = serialize($db);
 $db2 = unserialize($db_str);
 echo "ok\n";
 ?>
---EXPECT--
+--EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 ok
diff --git a/Zend/zend_compile.c b/Zend/zend_compile.c
index b695f22ff3f53..c185640c46e41 100644
--- a/Zend/zend_compile.c
+++ b/Zend/zend_compile.c
@@ -9355,6 +9355,10 @@ static void zend_compile_class_decl(znode *result, zend_ast *ast, bool toplevel)
 		zend_error(E_DEPRECATED, "The __sleep() serialization magic method has been deprecated."
 			" Implement __serialize() instead (or in addition, if support for old PHP versions is necessary)");
 	}
+	if (UNEXPECTED(zend_hash_exists(&ce->function_table, ZSTR_KNOWN(ZEND_STR_WAKEUP)) && ce->__unserialize == NULL)) {
+		zend_error(E_DEPRECATED, "The __wakeup() serialization magic method has been deprecated."
+			" Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary)");
+	}
 
 	/* We currently don't early-bind classes that implement interfaces or use traits */
 	if (!ce->num_interfaces && !ce->num_traits && !ce->num_hooked_prop_variance_checks
diff --git a/ext/date/tests/bug62852_var2.phpt b/ext/date/tests/bug62852_var2.phpt
index 4749d2a9bb21f..5e867873a31f2 100644
--- a/ext/date/tests/bug62852_var2.phpt
+++ b/ext/date/tests/bug62852_var2.phpt
@@ -22,6 +22,8 @@ try {
 var_dump( $foo );
 ?>
 --EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
+
 Fatal error: Uncaught Error: Invalid serialization data for DateTime object in %sbug62852_var2.php:%d
 Stack trace:
 #0 [internal function]: DateTime->__unserialize(Array)
diff --git a/ext/date/tests/bug62852_var3.phpt b/ext/date/tests/bug62852_var3.phpt
index 7049efcebd84f..4130f3142fa62 100644
--- a/ext/date/tests/bug62852_var3.phpt
+++ b/ext/date/tests/bug62852_var3.phpt
@@ -22,6 +22,8 @@ try {
 var_dump( $foo );
 ?>
 --EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
+
 Fatal error: Uncaught Error: Invalid serialization data for DateTime object in %sbug62852_var3.php:%d
 Stack trace:
 #0 [internal function]: DateTime->__unserialize(Array)
diff --git a/ext/dom/tests/gh8996.phpt b/ext/dom/tests/gh8996.phpt
index 502b27b334876..0706f2ecdecc3 100644
--- a/ext/dom/tests/gh8996.phpt
+++ b/ext/dom/tests/gh8996.phpt
@@ -81,6 +81,8 @@ echo "Serialized:\n-----------\n$serialized\n-----------\nRestored:\n-----------
 ?>
 --EXPECTF--
 Deprecated: The __sleep() serialization magic method has been deprecated. Implement __serialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
+
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 === __sleep and __wakeup ===
 string(144) "O:34:"SerializableDomDocumentSleepWakeup":1:{s:43:"%0SerializableDomDocumentSleepWakeup%0xmlData";s:39:"<?xml version="1.0"?>
 <tag>value</tag>
diff --git a/ext/pdo_mysql/tests/pdo_mysql_stmt_fetch_class.phpt b/ext/pdo_mysql/tests/pdo_mysql_stmt_fetch_class.phpt
index 5d53d0a05572f..4ba394cc7cd34 100644
--- a/ext/pdo_mysql/tests/pdo_mysql_stmt_fetch_class.phpt
+++ b/ext/pdo_mysql/tests/pdo_mysql_stmt_fetch_class.phpt
@@ -112,6 +112,8 @@ $db->exec('DROP TABLE IF EXISTS test_stmt_fetch_class');
 --EXPECTF--
 Deprecated: The __sleep() serialization magic method has been deprecated. Implement __serialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
+
 Deprecated: %s implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 Creating an object, serializing it and writing it to DB...
 myclass::singleton(Creating object)
diff --git a/ext/pdo_mysql/tests/pdo_mysql_stmt_fetch_serialize.phpt b/ext/pdo_mysql/tests/pdo_mysql_stmt_fetch_serialize.phpt
index f67707abdbe3e..455b04b4cb071 100644
--- a/ext/pdo_mysql/tests/pdo_mysql_stmt_fetch_serialize.phpt
+++ b/ext/pdo_mysql/tests/pdo_mysql_stmt_fetch_serialize.phpt
@@ -109,6 +109,8 @@ $db->exec('DROP TABLE IF EXISTS test_stmt_fetch_serialize');
 --EXPECTF--
 Deprecated: The __sleep() serialization magic method has been deprecated. Implement __serialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
+
 Deprecated: %s implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 Creating an object, serializing it and writing it to DB...
 myclass::singleton(Creating object)
diff --git a/ext/pdo_mysql/tests/pdo_mysql_stmt_fetch_serialize_fetch_class.phpt b/ext/pdo_mysql/tests/pdo_mysql_stmt_fetch_serialize_fetch_class.phpt
index 9ef583b0cd4f9..175f2c69e26e0 100644
--- a/ext/pdo_mysql/tests/pdo_mysql_stmt_fetch_serialize_fetch_class.phpt
+++ b/ext/pdo_mysql/tests/pdo_mysql_stmt_fetch_serialize_fetch_class.phpt
@@ -112,6 +112,8 @@ $db->exec('DROP TABLE IF EXISTS test_stmt_fetchserialize_fetch_class');
 --EXPECTF--
 Deprecated: The __sleep() serialization magic method has been deprecated. Implement __serialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
+
 Deprecated: %s implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 Creating an object, serializing it and writing it to DB...
 myclass::singleton(Creating object)
diff --git a/ext/phar/tests/phar_metadata_write3.phpt b/ext/phar/tests/phar_metadata_write3.phpt
index 304ed65b46e9f..bc3c5c45fe2f0 100644
--- a/ext/phar/tests/phar_metadata_write3.phpt
+++ b/ext/phar/tests/phar_metadata_write3.phpt
@@ -58,6 +58,7 @@ unlink(__DIR__ . '/' . basename(__FILE__, '.clean.php') . '.phar.php');
 unlink(__DIR__ . '/' . basename(__FILE__, '.clean.php') . '.phar.php.copy.php');
 ?>
 --EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 Reading file contents through stream wrapper
 string(18) "contents of file a"
 Original metadata
diff --git a/ext/phar/tests/phar_metadata_write4.phpt b/ext/phar/tests/phar_metadata_write4.phpt
index 35b8ecba5b902..1d552ba284880 100644
--- a/ext/phar/tests/phar_metadata_write4.phpt
+++ b/ext/phar/tests/phar_metadata_write4.phpt
@@ -68,6 +68,8 @@ unlink(__DIR__ . '/' . basename(__FILE__, '.clean.php') . '.phar.php');
 unlink(__DIR__ . '/' . basename(__FILE__, '.clean.php') . '.phar.php.copy.php');
 ?>
 --EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
+
 Deprecated: The __sleep() serialization magic method has been deprecated. Implement __serialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 In __destruct 1
 string(1) "a"
diff --git a/ext/spl/tests/SplObjectStorage/bug70365.phpt b/ext/spl/tests/SplObjectStorage/bug70365.phpt
index 55ff58c9e9122..5e2ff3328ac3a 100644
--- a/ext/spl/tests/SplObjectStorage/bug70365.phpt
+++ b/ext/spl/tests/SplObjectStorage/bug70365.phpt
@@ -34,6 +34,7 @@ function ptr2str($ptr)
 }
 ?>
 --EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 array(5) {
   [0]=>
   int(1)
diff --git a/ext/spl/tests/bug70366.phpt b/ext/spl/tests/bug70366.phpt
index d3d3317bff370..955dea18e11b3 100644
--- a/ext/spl/tests/bug70366.phpt
+++ b/ext/spl/tests/bug70366.phpt
@@ -34,6 +34,7 @@ function ptr2str($ptr)
 }
 ?>
 --EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 array(5) {
   [0]=>
   int(1)
diff --git a/ext/standard/tests/serialize/001.phpt b/ext/standard/tests/serialize/001.phpt
index bdbb06133ef84..b4d2f3e841da5 100644
--- a/ext/standard/tests/serialize/001.phpt
+++ b/ext/standard/tests/serialize/001.phpt
@@ -79,6 +79,8 @@ var_dump($a);
 ?>
 --EXPECTF--
 Deprecated: The __sleep() serialization magic method has been deprecated. Implement __serialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
+
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 N;
 b:1;
 b:0;
diff --git a/ext/standard/tests/serialize/005.phpt b/ext/standard/tests/serialize/005.phpt
index bd7d65f7a29d2..c33d6267d6d50 100644
--- a/ext/standard/tests/serialize/005.phpt
+++ b/ext/standard/tests/serialize/005.phpt
@@ -130,8 +130,12 @@ var_dump(unserialize('O:22:"autoload_not_available":0:{}'));
 --EXPECTF--
 Deprecated: The __sleep() serialization magic method has been deprecated. Implement __serialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
+
 Deprecated: The __sleep() serialization magic method has been deprecated. Implement __serialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
+
 Deprecated: %s implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 ===O1===
 TestOld::__sleep()
diff --git a/ext/standard/tests/serialize/__serialize_004.phpt b/ext/standard/tests/serialize/__serialize_004.phpt
index 66db8bf5044be..ef1c8582743f0 100644
--- a/ext/standard/tests/serialize/__serialize_004.phpt
+++ b/ext/standard/tests/serialize/__serialize_004.phpt
@@ -38,7 +38,8 @@ var_dump($s = serialize($obj));
 var_dump(unserialize($s));
 
 ?>
---EXPECT--
+--EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 string(126) "O:6:"Wakeup":1:{s:4:"data";a:1:{i:0;O:11:"Unserialize":1:{i:0;O:6:"Wakeup":1:{s:4:"data";a:1:{i:0;O:11:"Unserialize":0:{}}}}}}"
 __unserialize() called
 array(0) {
diff --git a/ext/standard/tests/serialize/bug64354_2.phpt b/ext/standard/tests/serialize/bug64354_2.phpt
index 675305132157e..ddb81af8be476 100644
--- a/ext/standard/tests/serialize/bug64354_2.phpt
+++ b/ext/standard/tests/serialize/bug64354_2.phpt
@@ -20,5 +20,6 @@ try {
     var_dump($e->getMessage());
 }
 ?>
---EXPECT--
+--EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 string(6) "Failed"
diff --git a/ext/standard/tests/serialize/bug65806.phpt b/ext/standard/tests/serialize/bug65806.phpt
index 4d576bca685a3..3059959b1f448 100644
--- a/ext/standard/tests/serialize/bug65806.phpt
+++ b/ext/standard/tests/serialize/bug65806.phpt
@@ -75,6 +75,8 @@ function check(myObjC $obj) {
 ?>
 --EXPECTF--
 Deprecated: The __sleep() serialization magic method has been deprecated. Implement __serialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
+
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 SCRIPT START
 check successful
 start serialize/unserialize
diff --git a/ext/standard/tests/serialize/bug68976.phpt b/ext/standard/tests/serialize/bug68976.phpt
index 514bd8b453fda..4d60bc6b7feb3 100644
--- a/ext/standard/tests/serialize/bug68976.phpt
+++ b/ext/standard/tests/serialize/bug68976.phpt
@@ -25,7 +25,8 @@ for($i = 0; $i < 5; $i++) {
 
 var_dump($data);
 ?>
---EXPECT--
+--EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 array(2) {
   [0]=>
   object(evilClass)#1 (0) {
diff --git a/ext/standard/tests/serialize/bug69425.phpt b/ext/standard/tests/serialize/bug69425.phpt
index 1bc79c0387c8c..6199ba394b44d 100644
--- a/ext/standard/tests/serialize/bug69425.phpt
+++ b/ext/standard/tests/serialize/bug69425.phpt
@@ -23,6 +23,7 @@ var_dump($data);
 
 ?>
 --EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 int(1)
 array(2) {
   [0]=>
diff --git a/ext/standard/tests/serialize/bug70172_2.phpt b/ext/standard/tests/serialize/bug70172_2.phpt
index 9bb4d83d5517e..9730d44cfc6ff 100644
--- a/ext/standard/tests/serialize/bug70172_2.phpt
+++ b/ext/standard/tests/serialize/bug70172_2.phpt
@@ -48,6 +48,8 @@ function ptr2str($ptr)
 }
 ?>
 --EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
+
 Deprecated: obj implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 array(2) {
   [0]=>
diff --git a/ext/standard/tests/serialize/bug70513.phpt b/ext/standard/tests/serialize/bug70513.phpt
index 9a93a3359b678..c45f61353ffbc 100644
--- a/ext/standard/tests/serialize/bug70513.phpt
+++ b/ext/standard/tests/serialize/bug70513.phpt
@@ -26,7 +26,8 @@ var_dump($x);
 var_dump($obj);
 
 ?>
---EXPECT--
+--EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 array(1) {
   [0]=>
   int(1)
diff --git a/ext/standard/tests/serialize/bug72663.phpt b/ext/standard/tests/serialize/bug72663.phpt
index ce767973e97f1..b92f3a1c50426 100644
--- a/ext/standard/tests/serialize/bug72663.phpt
+++ b/ext/standard/tests/serialize/bug72663.phpt
@@ -49,6 +49,10 @@ try {
 
 ?>
 --EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
+
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
+
 Warning: unserialize(): Error at offset 17 of 24 bytes in %s on line %d
 bool(false)
 
diff --git a/ext/standard/tests/serialize/bug72731.phpt b/ext/standard/tests/serialize/bug72731.phpt
index 9489928cfb128..f13103288873f 100644
--- a/ext/standard/tests/serialize/bug72731.phpt
+++ b/ext/standard/tests/serialize/bug72731.phpt
@@ -15,4 +15,5 @@ var_dump(unserialize($poc));
 
 ?>
 --EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
 %s(73588229205)
diff --git a/ext/standard/tests/serialize/wakeup_deprecation_promoted_exception.phpt b/ext/standard/tests/serialize/wakeup_deprecation_promoted_exception.phpt
new file mode 100644
index 0000000000000..2535148bd7d3d
--- /dev/null
+++ b/ext/standard/tests/serialize/wakeup_deprecation_promoted_exception.phpt
@@ -0,0 +1,24 @@
+--TEST--
+__wakeup() deprecation promoted to exception
+--FILE--
+<?php
+
+set_error_handler(function ($errno, $errstr, $errfile, $errline) {
+    throw new ErrorException($errstr);
+});
+
+try {
+eval(<<<'CODE'
+    class Test {
+        public function __wakeup() {
+            return;
+        }
+    }
+CODE);
+} catch (Throwable $e) {
+    echo $e::class, ': ', $e->getMessage(), PHP_EOL;
+}
+
+?>
+--EXPECT--
+ErrorException: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary)
diff --git a/ext/standard/tests/serialize/wakeup_deprecation_promoted_exception2.inc b/ext/standard/tests/serialize/wakeup_deprecation_promoted_exception2.inc
new file mode 100644
index 0000000000000..b4f8b7e42940c
--- /dev/null
+++ b/ext/standard/tests/serialize/wakeup_deprecation_promoted_exception2.inc
@@ -0,0 +1,7 @@
+<?php
+
+class Test {
+    public function __wakeup() {
+        return;
+    }
+}
diff --git a/ext/standard/tests/serialize/wakeup_deprecation_promoted_exception2.phpt b/ext/standard/tests/serialize/wakeup_deprecation_promoted_exception2.phpt
new file mode 100644
index 0000000000000..52f558e566ab1
--- /dev/null
+++ b/ext/standard/tests/serialize/wakeup_deprecation_promoted_exception2.phpt
@@ -0,0 +1,18 @@
+--TEST--
+__wakeup() deprecation promoted to exception
+--FILE--
+<?php
+
+set_error_handler(function ($errno, $errstr, $errfile, $errline) {
+    throw new ErrorException($errstr);
+});
+
+try {
+    require __DIR__ . '/wakeup_deprecation_promoted_exception2.inc';
+} catch (Throwable $e) {
+    echo $e::class, ': ', $e->getMessage(), PHP_EOL;
+}
+
+?>
+--EXPECT--
+ErrorException: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary)
\ No newline at end of file
diff --git a/ext/standard/tests/strings/bug72663_3.phpt b/ext/standard/tests/strings/bug72663_3.phpt
index bcec2b182a1da..d4f157cb7877e 100644
--- a/ext/standard/tests/strings/bug72663_3.phpt
+++ b/ext/standard/tests/strings/bug72663_3.phpt
@@ -14,5 +14,7 @@ unserialize($poc);
 ?>
 DONE
 --EXPECTF--
+Deprecated: The __wakeup() serialization magic method has been deprecated. Implement __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
+
 Warning: unserialize(): Error at offset 50 of 50 bytes in %s on line %d
 DONE