[PHP-DEV] PHP 4.0 Bug #10234: if (... != ...) does not work properly with strings

[ruslan2000]

From:             [EMAIL PROTECTED]
Operating system: Win2000 Prof
PHP version:      4.0.4pl1
PHP Bug Type:     Unknown/Other Function
Bug description:  if (... != ...) does not work properly with strings

<?php
/*
I want to compare two strings and if they are equal show a message on the screen.
But I discovered that it's imposible, because PHP think that they are equal anyway :(((

Example of script
*/

//EX 1. something wrong
$qqq = "00041001001001001001001001001001001002000";
$xxx = "00041001001001001000000000000000000000000";

# with != just the same effect as <>
if ($qqq <> $xxx)
         echo "<hr>$qqq<br> <b>!=</b> <br>$xxx<hr>"; //it should be on the screen, but 
... 
else 
        echo "<hr>$qqq<br> <b>=</b> <br>$xxx <hr>"; //it's appear every time on the 
screen :(((

if ($qqq != $xxx) 
        echo "<hr>$qqq<br> <b>!=</b> <br>$xxx";
else    
        echo "<hr>$qqq<br> <b>=</b> <br>$xxx <hr>";

//(strval($qqq) != strval($xxx)) does not work too 
if (strval($qqq) != strval($xxx))
         echo "<hr>$qqq<br> <b>!=</b> <br>$xxx<hr>";
else
         echo "<hr>$qqq<br> <b>=</b> <br>$xxx <hr>";

//EX 2  - all OK

$qqq = "00041001000000000000000000000000000000000";
$xxx = "00041001001001001001001001001001001002000";

# with != just the same effect as <>
if ($qqq <> $xxx)
        echo "$qqq<br> <b>!=</b> <br>$xxx";
else 
        echo "$qqq<br> <b>=</b> <br>$xxx <hr>";

if ($qqq != $xxx)
        echo "$qqq<br> <b>!=</b> <br>$xxx";
else 
        echo "$qqq<br> <b>=</b> <br>$xxx <hr>";

?>


-- 
Edit Bug report at: http://bugs.php.net/?id=10234&edit=1



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