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Bug #62228 equal operator does not correct
Submitted: 2012-06-05 02:51 UTC Modified: 2012-06-05 05:36 UTC
From: starway49 at hotmail dot com Assigned:
Status: Not a bug Package: Scripting Engine problem
PHP Version: 5.3.13 OS: ALL
Private report: No CVE-ID: None
View Developer Edit
 [2012-06-05 02:51 UTC] starway49 at hotmail dot com 
Description:
------------
this problom may happen in PHP5.2~5.4

<?php
    echo '0X00' == '0E04';  //return 1

    if ('0X00' == '0E04') {
    	echo '0X00 = 0E04'; //the answer is true?!
    }
?>

Test script:
---------------
<?php
    echo '0X00' == '0E04';  //return 1

    if ('0X00' == '0E04') {
    	echo '0X00 = 0E04'; //the answer is true
    }
?>

Expected result:
----------------
if ('0X00' == '0E04')
this should return false.

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 [2012-06-05 05:32 UTC] laruence@php.net
-Status: Open +Status: Not a bug
 [2012-06-05 05:32 UTC] laruence@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

0x00 -> hex 0
0e04 -> science nonation 0 * 10^4 

they all are numeric string. php will convert them to integer before comparing.
 [2012-06-05 05:36 UTC] laruence@php.net 
s#convert to integer#convert to number#g
 
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