Zend: Warn when destructuring non-array values

RFC: https://wiki.php.net/rfc/warnings-php-8-5#destructuring_non-array_values

Author: Girgias

Zend/tests/list/bug39304.phpt

@@ -8,5 +8,9 @@ Bug #39304 (Segmentation fault with list unpacking of string offset)
 ?>
 --EXPECTF--
 Warning: Uninitialized string offset 0 in %s on line %d
+
+Warning: Cannot use string as array in %s on line %d
+
+Warning: Cannot use string as array in %s on line %d
 NULL
 NULL

Zend/tests/list/destruct_bool.phpt

@@ -0,0 +1,18 @@
+--TEST--
+Destructuring with list() a value of type bool
+--FILE--
+<?php
+
+$v = true;
+
+list($a, $b) = $v;
+
+var_dump($a, $b);
+
+?>
+--EXPECTF--
+Warning: Cannot use bool as array in %s on line %d
+
+Warning: Cannot use bool as array in %s on line %d
+NULL
+NULL

Zend/tests/list/destruct_float.phpt

@@ -0,0 +1,18 @@
+--TEST--
+Destructuring with list() a value of type float
+--FILE--
+<?php
+
+$v = 25.64;
+
+list($a, $b) = $v;
+
+var_dump($a, $b);
+
+?>
+--EXPECTF--
+Warning: Cannot use float as array in %s on line %d
+
+Warning: Cannot use float as array in %s on line %d
+NULL
+NULL

Zend/tests/list/destruct_int.phpt

@@ -0,0 +1,18 @@
+--TEST--
+Destructuring with list() a value of type int
+--FILE--
+<?php
+
+$v = 5;
+
+list($a, $b) = $v;
+
+var_dump($a, $b);
+
+?>
+--EXPECTF--
+Warning: Cannot use int as array in %s on line %d
+
+Warning: Cannot use int as array in %s on line %d
+NULL
+NULL

Zend/tests/list/destruct_null.phpt

@@ -0,0 +1,12 @@
+--TEST--
+Destructuring with list() a value of type null
+--FILE--
+<?php
+
+list($a) = null;
+
+var_dump($a);
+
+?>
+--EXPECT--
+NULL

Zend/tests/list/destruct_object_not_ArrayAccess.phpt

@@ -0,0 +1,17 @@
+--TEST--
+Destructuring with list() a value of type object (that does not implement ArrayAccess)
+--FILE--
+<?php
+
+$v = new stdClass();
+
+list($a, $b) = $v;
+
+var_dump($a, $b);
+
+?>
+--EXPECTF--
+Fatal error: Uncaught Error: Cannot use object of type stdClass as array in %s:%d
+Stack trace:
+#0 {main}
+  thrown in %s on line %d

Zend/tests/list/destruct_resource.phpt

@@ -0,0 +1,18 @@
+--TEST--
+Destructuring with list() a value of type resource
+--FILE--
+<?php
+
+$v = STDERR;
+
+list($a, $b) = $v;
+
+var_dump($a, $b);
+
+?>
+--EXPECTF--
+Warning: Cannot use resource as array in %s on line %d
+
+Warning: Cannot use resource as array in %s on line %d
+NULL
+NULL

Zend/tests/list/destruct_string.phpt

@@ -0,0 +1,18 @@
+--TEST--
+Destructuring with list() a value of type string
+--FILE--
+<?php
+
+$v = 'hello';
+
+list($a, $b) = $v;
+
+var_dump($a, $b);
+
+?>
+--EXPECTF--
+Warning: Cannot use string as array in %s on line %d
+
+Warning: Cannot use string as array in %s on line %d
+NULL
+NULL