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Bug #44213 in_array returns wrong value
Submitted: 2008-02-22 12:24 UTC Modified: 2008-02-22 12:37 UTC
From: markus dot kalkbrenner at arcor dot de Assigned:
Status: Not a bug Package: Arrays related
PHP Version: 5.2.5 OS: Linux
Private report: No CVE-ID: None
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From: markus dot kalkbrenner at arcor dot de
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 [2008-02-22 12:24 UTC] markus dot kalkbrenner at arcor dot de 
Description:
------------
in_array() returns true if needle exists as key with int(0) as value, but should return false because needle doesn't exist as value.

Reproduce code:
---------------
<?php
var_dump( in_array('a', array('a' => 1) ) );
var_dump( in_array('a', array('a' => 0) ) );
?>

Expected result:
----------------
bool(false)
bool(false)


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

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 [2008-02-22 12:37 UTC] felipe@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 result is expected.

In "a" == 0, "a" is converted to int. For strict comparison, use the third parameter.

http://docs.php.net/in-array
 
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