php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login

go to bug id or search bugs for

Bug #67114 sometimes class_exists() does not works on a class using traits ...
Submitted: 2014-04-23 09:57 UTC Modified: 2014-04-23 18:25 UTC
From: php at sunyanzi dot me Assigned:
Status: Not a bug Package: *General Issues
PHP Version: 5.5.11 OS: debian wheezy
Private report: No CVE-ID: None
View Developer Edit
 [2014-04-23 09:57 UTC] php at sunyanzi dot me 
Description:
------------
function class_exists returns wrong result when a class used traits ...

in clear way ... just see code below ...

Test script:
---------------
<?php
var_dump( class_exists( 'baz' ) ); // true 
var_dump( class_exists( 'bar' ) ); // false

trait foo { }

class bar {
    use foo;
}

class baz {

}

var_dump( class_exists( 'bar' ) ); // true

Expected result:
----------------
bool(true)
bool(true)
bool(true)

Actual result:
--------------
bool(true)
bool(false)
bool(true)

Patches

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2014-04-23 18:25 UTC] johannes@php.net
-Status: Open +Status: Not a bug
 [2014-04-23 18:25 UTC] johannes@php.net 
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

This is a nifty case: Only "simple" classes are fully available after compile time, classes with "complexer" things (interface,traits, ...) will be bound and made available at runtime in the place where they are declared, else constructs like

  <?php 
  include 'someinterface.php';
  class C implements someinterfae {}
  ?>

won't work. same with traits.
 [2014-04-24 01:54 UTC] php at sunyanzi dot me 
my mistake ... thank you for your comment ... i am appreciate for that ...
 
PHP Copyright © 2001-2025 The PHP Group
All rights reserved. 		Last updated: Thu Nov 06 20:00:02 2025 UTC