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Bug #13457 function_exists always returns false
Submitted: 2001-09-26 13:13 UTC Modified: 2001-09-26 13:34 UTC
From: prottoss at mediaminer dot org Assigned:
Status: Not a bug Package: Unknown/Other Function
PHP Version: 4.0.6 OS: Linux 2.4.9
Private report: No CVE-ID: None
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 [2001-09-26 13:13 UTC] prottoss at mediaminer dot org 
function_exists() always returns false regardless of the specified input unless the function is not part of php core and is avaliable.
For example function_exists('include_once') returns false (on php 4.0.6) however it does return true for function_exists('shmop_open').

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 [2001-09-26 13:34 UTC] derick@php.net 
Not a bug, include_once is not a function, but a language construct. And thus it does not appear in Zend's internal functionlist.

Derick
 
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