diff --git a/ext/session/session.c b/ext/session/session.c
index bf05a547acc..dd57b6ad057 100644
--- a/ext/session/session.c
+++ b/ext/session/session.c
@@ -2034,15 +2034,13 @@ PHP_FUNCTION(session_set_save_handler)
 		if (register_shutdown) {
 			/* create shutdown function */
 			php_shutdown_function_entry shutdown_function_entry;
-			shutdown_function_entry.arg_count = 1;
-			shutdown_function_entry.arguments = (zval *) safe_emalloc(sizeof(zval), 1, 0);
-
-			ZVAL_STRING(&shutdown_function_entry.arguments[0], "session_register_shutdown");
+			ZVAL_STRING(&shutdown_function_entry.function_name, "session_register_shutdown");
+			shutdown_function_entry.arg_count = 0;
+			shutdown_function_entry.arguments = NULL;
 
 			/* add shutdown function, removing the old one if it exists */
 			if (!register_user_shutdown_function("session_shutdown", sizeof("session_shutdown") - 1, &shutdown_function_entry)) {
-				zval_ptr_dtor(&shutdown_function_entry.arguments[0]);
-				efree(shutdown_function_entry.arguments);
+				zval_ptr_dtor(&shutdown_function_entry.function_name);
 				php_error_docref(NULL, E_WARNING, "Unable to register session shutdown function");
 				RETURN_FALSE;
 			}
@@ -2665,14 +2663,12 @@ PHP_FUNCTION(session_register_shutdown)
 	 * the session still to be available.
 	 */
 
-	shutdown_function_entry.arg_count = 1;
-	shutdown_function_entry.arguments = (zval *) safe_emalloc(sizeof(zval), 1, 0);
+	ZVAL_STRING(&shutdown_function_entry.function_name, "session_write_close");
+	shutdown_function_entry.arg_count = 0;
+	shutdown_function_entry.arguments = NULL;
 
-	ZVAL_STRING(&shutdown_function_entry.arguments[0], "session_write_close");
-
-	if (!append_user_shutdown_function(shutdown_function_entry)) {
-		zval_ptr_dtor(&shutdown_function_entry.arguments[0]);
-		efree(shutdown_function_entry.arguments);
+	if (!append_user_shutdown_function(&shutdown_function_entry)) {
+		zval_ptr_dtor(&shutdown_function_entry.function_name);
 
 		/* Unable to register shutdown function, presumably because of lack
 		 * of memory, so flush the session now. It would be done in rshutdown
diff --git a/ext/standard/basic_functions.c b/ext/standard/basic_functions.c
index d0c8805fe46..8a7d9ca895b 100755
--- a/ext/standard/basic_functions.c
+++ b/ext/standard/basic_functions.c
@@ -1658,6 +1658,7 @@ void user_shutdown_function_dtor(zval *zv) /* {{{ */
 	int i;
 	php_shutdown_function_entry *shutdown_function_entry = Z_PTR_P(zv);
 
+	zval_ptr_dtor(&shutdown_function_entry->function_name);
 	for (i = 0; i < shutdown_function_entry->arg_count; i++) {
 		zval_ptr_dtor(&shutdown_function_entry->arguments[i]);
 	}
@@ -1682,18 +1683,18 @@ static int user_shutdown_function_call(zval *zv) /* {{{ */
     php_shutdown_function_entry *shutdown_function_entry = Z_PTR_P(zv);
 	zval retval;
 
-	if (!zend_is_callable(&shutdown_function_entry->arguments[0], 0, NULL)) {
-		zend_string *function_name = zend_get_callable_name(&shutdown_function_entry->arguments[0]);
+	if (!zend_is_callable(&shutdown_function_entry->function_name, 0, NULL)) {
+		zend_string *function_name = zend_get_callable_name(&shutdown_function_entry->function_name);
 		zend_throw_error(NULL, "Registered shutdown function %s() cannot be called, function does not exist", ZSTR_VAL(function_name));
 		zend_string_release(function_name);
 		return 0;
 	}
 
 	if (call_user_function(NULL, NULL,
-				&shutdown_function_entry->arguments[0],
+				&shutdown_function_entry->function_name,
 				&retval,
-				shutdown_function_entry->arg_count - 1,
-				shutdown_function_entry->arguments + 1) == SUCCESS)
+				shutdown_function_entry->arg_count,
+				shutdown_function_entry->arguments) == SUCCESS)
 	{
 		zval_ptr_dtor(&retval);
 	}
@@ -1787,40 +1788,24 @@ PHPAPI void php_free_shutdown_functions(void) /* {{{ */
 /* {{{ Register a user-level function to be called on request termination */
 PHP_FUNCTION(register_shutdown_function)
 {
-	php_shutdown_function_entry shutdown_function_entry;
-	int i;
+	php_shutdown_function_entry entry;
+	zend_fcall_info fci;
+	zend_fcall_info_cache fcc;
+	zval *args;
+	int arg_count = 0;
 
-	shutdown_function_entry.arg_count = ZEND_NUM_ARGS();
-
-	if (shutdown_function_entry.arg_count < 1) {
-		WRONG_PARAM_COUNT;
-	}
-
-	shutdown_function_entry.arguments = (zval *) safe_emalloc(sizeof(zval), shutdown_function_entry.arg_count, 0);
-
-	if (zend_get_parameters_array(ZEND_NUM_ARGS(), shutdown_function_entry.arg_count, shutdown_function_entry.arguments) == FAILURE) {
-		efree(shutdown_function_entry.arguments);
-		RETURN_FALSE;
-	}
-
-	/* Prevent entering of anything but valid callback (syntax check only!) */
-	if (!zend_is_callable(&shutdown_function_entry.arguments[0], 0, NULL)) {
-		zend_string *callback_name = zend_get_callable_name(&shutdown_function_entry.arguments[0]);
-		zend_argument_type_error(1, "must be a valid callback, function \"%s\" not found or invalid function name", ZSTR_VAL(callback_name));
-		efree(shutdown_function_entry.arguments);
-		zend_string_release(callback_name);
+	if (zend_parse_parameters(ZEND_NUM_ARGS(), "f*", &fci, &fcc, &args, &arg_count) == FAILURE) {
 		RETURN_THROWS();
 	}
 
-	if (!BG(user_shutdown_function_names)) {
-		ALLOC_HASHTABLE(BG(user_shutdown_function_names));
-		zend_hash_init(BG(user_shutdown_function_names), 0, NULL, user_shutdown_function_dtor, 0);
+	ZVAL_COPY(&entry.function_name, &fci.function_name);
+	entry.arguments = (zval *) safe_emalloc(sizeof(zval), arg_count, 0);
+	entry.arg_count = arg_count;
+	for (int i = 0; i < arg_count; i++) {
+		ZVAL_COPY(&entry.arguments[i], &args[i]);
 	}
 
-	for (i = 0; i < shutdown_function_entry.arg_count; i++) {
-		Z_TRY_ADDREF(shutdown_function_entry.arguments[i]);
-	}
-	zend_hash_next_index_insert_mem(BG(user_shutdown_function_names), &shutdown_function_entry, sizeof(php_shutdown_function_entry));
+	append_user_shutdown_function(&entry);
 }
 /* }}} */
 
@@ -1846,14 +1831,14 @@ PHPAPI zend_bool remove_user_shutdown_function(const char *function_name, size_t
 }
 /* }}} */
 
-PHPAPI zend_bool append_user_shutdown_function(php_shutdown_function_entry shutdown_function_entry) /* {{{ */
+PHPAPI zend_bool append_user_shutdown_function(php_shutdown_function_entry *shutdown_function_entry) /* {{{ */
 {
 	if (!BG(user_shutdown_function_names)) {
 		ALLOC_HASHTABLE(BG(user_shutdown_function_names));
 		zend_hash_init(BG(user_shutdown_function_names), 0, NULL, user_shutdown_function_dtor, 0);
 	}
 
-	return zend_hash_next_index_insert_mem(BG(user_shutdown_function_names), &shutdown_function_entry, sizeof(php_shutdown_function_entry)) != NULL;
+	return zend_hash_next_index_insert_mem(BG(user_shutdown_function_names), shutdown_function_entry, sizeof(php_shutdown_function_entry)) != NULL;
 }
 /* }}} */
 
diff --git a/ext/standard/basic_functions.h b/ext/standard/basic_functions.h
index 6c0eb5c59ed..97faf50fd92 100644
--- a/ext/standard/basic_functions.h
+++ b/ext/standard/basic_functions.h
@@ -143,13 +143,14 @@ PHPAPI double php_get_nan(void);
 PHPAPI double php_get_inf(void);
 
 typedef struct _php_shutdown_function_entry {
+	zval function_name;
 	zval *arguments;
 	int arg_count;
 } php_shutdown_function_entry;
 
 PHPAPI extern zend_bool register_user_shutdown_function(const char *function_name, size_t function_len, php_shutdown_function_entry *shutdown_function_entry);
 PHPAPI extern zend_bool remove_user_shutdown_function(const char *function_name, size_t function_len);
-PHPAPI extern zend_bool append_user_shutdown_function(php_shutdown_function_entry shutdown_function_entry);
+PHPAPI extern zend_bool append_user_shutdown_function(php_shutdown_function_entry *shutdown_function_entry);
 
 PHPAPI void php_call_shutdown_functions(void);
 PHPAPI void php_free_shutdown_functions(void);
diff --git a/ext/standard/basic_functions.stub.php b/ext/standard/basic_functions.stub.php
index ec0e056dac9..24aa55cbd7e 100755
--- a/ext/standard/basic_functions.stub.php
+++ b/ext/standard/basic_functions.stub.php
@@ -301,8 +301,7 @@ function forward_static_call(callable $function, mixed ...$args): mixed {}
 
 function forward_static_call_array(callable $function, array $args): mixed {}
 
-/** @param callable $function */
-function register_shutdown_function($function, mixed ...$args): ?bool {}
+function register_shutdown_function(callable $function, mixed ...$args): ?bool {}
 
 function highlight_file(string $filename, bool $return = false): string|bool {}
 
diff --git a/ext/standard/basic_functions_arginfo.h b/ext/standard/basic_functions_arginfo.h
index 5e19997bb46..6786cdb04a8 100644
--- a/ext/standard/basic_functions_arginfo.h
+++ b/ext/standard/basic_functions_arginfo.h
@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 97187c073137b8fdfc03bdecf72377ef73d79290 */
+ * Stub hash: c373aa965002f4c6a816e6574417ce59473ad7b3 */
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_set_time_limit, 0, 1, _IS_BOOL, 0)
 	ZEND_ARG_TYPE_INFO(0, seconds, IS_LONG, 0)
@@ -456,7 +456,7 @@ ZEND_END_ARG_INFO()
 #define arginfo_forward_static_call_array arginfo_call_user_func_array
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_register_shutdown_function, 0, 1, _IS_BOOL, 1)
-	ZEND_ARG_INFO(0, function)
+	ZEND_ARG_TYPE_INFO(0, function, IS_CALLABLE, 0)
 	ZEND_ARG_VARIADIC_TYPE_INFO(0, args, IS_MIXED, 0)
 ZEND_END_ARG_INFO()
 
diff --git a/ext/standard/tests/general_functions/010.phpt b/ext/standard/tests/general_functions/010.phpt
index 31b8bed9050..a8fefd663de 100644
--- a/ext/standard/tests/general_functions/010.phpt
+++ b/ext/standard/tests/general_functions/010.phpt
@@ -20,5 +20,5 @@ try {
 echo "Done\n";
 ?>
 --EXPECT--
-register_shutdown_function(): Argument #1 ($function) must be a valid callback, function "test::__call" not found or invalid function name
+register_shutdown_function(): Argument #1 ($function) must be a valid callback, non-static method test::__call() cannot be called statically
 Done
diff --git a/ext/standard/tests/general_functions/bug32647.phpt b/ext/standard/tests/general_functions/bug32647.phpt
index 09735c9d86c..a981a7f4547 100644
--- a/ext/standard/tests/general_functions/bug32647.phpt
+++ b/ext/standard/tests/general_functions/bug32647.phpt
@@ -73,15 +73,15 @@ register_shutdown_function(array($obj,'barfoo'));
 ?>
 --EXPECTF--
 Warning: Undefined variable $obj in %s on line %d
-register_shutdown_function(): Argument #1 ($function) must be a valid callback, function "Array" not found or invalid function name
+register_shutdown_function(): Argument #1 ($function) must be a valid callback, first array member is not a valid class name or object
 
 Warning: Undefined variable $obj in %s on line %d
-register_shutdown_function(): Argument #1 ($function) must be a valid callback, function "Array" not found or invalid function name
-register_shutdown_function(): Argument #1 ($function) must be a valid callback, function "Array" not found or invalid function name
-register_shutdown_function(): Argument #1 ($function) must be a valid callback, function "bar::foo" not found or invalid function name
-register_shutdown_function(): Argument #1 ($function) must be a valid callback, function "Array" not found or invalid function name
+register_shutdown_function(): Argument #1 ($function) must be a valid callback, first array member is not a valid class name or object
+register_shutdown_function(): Argument #1 ($function) must be a valid callback, first array member is not a valid class name or object
+register_shutdown_function(): Argument #1 ($function) must be a valid callback, class bar does not have a method "foo"
+register_shutdown_function(): Argument #1 ($function) must be a valid callback, first array member is not a valid class name or object
 register_shutdown_function(): Argument #1 ($function) must be a valid callback, function "bar" not found or invalid function name
-register_shutdown_function(): Argument #1 ($function) must be a valid callback, function "bar::barfoo" not found or invalid function name
-register_shutdown_function(): Argument #1 ($function) must be a valid callback, function "bar::foobar" not found or invalid function name
+register_shutdown_function(): Argument #1 ($function) must be a valid callback, non-static method bar::barfoo() cannot be called statically
+register_shutdown_function(): Argument #1 ($function) must be a valid callback, class bar does not have a method "foobar"
 foo!
 bar!