Bug #67620 [Asn->Wfx]: is_callable and self
Edit report at https://bugs.php.net/bug.php?id=67620&edit=1
ID: 67620
Updated by: cmb@php.net
Reported by: remyfox at hotmail dot com
Summary: is_callable and self
-Status: Assigned
+Status: Wont fix
Type: Bug
-Package: Unknown/Other Function
+Package: Scripting Engine problem
Operating System: windows 7
PHP Version: 5.4Git-2014-07-15 (Git)
-Assigned To: danack
+Assigned To: cmb
Block user comment: N
Private report: N
New Comment:
Use self::class instead of "self"[1]. Also note that there is an
RFC in voting which proposes to deprecate this callable syntax[2],
and it is highly likely that it will pass, so I'm closing this
ticket as WONTFIX.
Also note that that self is sloppy here, and that it should be
static instead. Then, as of PHP 8.1.0, you can use the first
class callable syntax[3].
[1] <https://3v4l.org/U6KEk>
[2] <https://wiki.php.net/rfc/deprecate_partially_supported_callables>
[3] <https://3v4l.org/QnPHB>
Previous Comments:
------------------------------------------------------------------------
[2016-01-15 13:08:28] danack@php.net
Assigning to myself. This will require an RFC to change.
https://wiki.php.net/rfc/consistent_callables
------------------------------------------------------------------------
[2014-07-15 08:35:10] remyfox at hotmail dot com
Description:
------------
PHP 5.4.7
When "self" is provided to is_callable, while inside a class that doesn't contain the
method nor has a parent with the method, it will behave as $this.
Subsequent calling of the method which had been falsely declared callable, will result in
Fatal error: Call to undefined method A::y() in *__FILE__* on line 5
Test script:
---------------
<?php
class A {
public function x() {
if (is_callable(array($this, "y"))) $this::y();
if (is_callable(array("self", "y"))) self::y();
}
}
class B extends A {
public function y() {}
}
(new B())->x();
?>
Expected result:
----------------
Self should behalve like __CLASS__ in the example above and the fatal error should be avoided.
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=67620&edit=1
Thread (3 messages)