#20353 [Opn->Fbk]: Change of isset behaviour

[derick]

 ID:               20353
 Updated by:       [EMAIL PROTECTED]
 Reported By:      [EMAIL PROTECTED]
-Status:           Open
+Status:           Feedback
 Bug Type:         Strings related
 Operating System: Red hat 7.2
 PHP Version:      4.3.0-pre2
 New Comment:

Please recompile and add the configure option --disable-mbstring. Does
the problem still occur then?

Derick


Previous Comments:
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[2002-11-11 04:16:32] [EMAIL PROTECTED]

You are right,but there is a change.  I was not specific enough, in
fact I send a variable through the get method

http://somewhere/test_isset.php?bibi=&;

The test_isset.php file is :

<?php

$namevar="bibi";

if(isset($$namevar)){
 
    echo "it comes here even if the string is empty <BR>";

}else{
    echo "it comes here NAMEVAR is not set or is empty <BR>";
}

if(isset($name)){
 
    echo "it comes here if set even if the string is empty <BR>";

}else{
    echo "it comes here NAME is not set <BR>";
}

?>

With the previous http request :
For 4.3.0-pre2 bibi is never set

For 4.2.2 bibi is not set only when I remove = from the get URL, it
seems logic

Idea ? Thanks

------------------------------------------------------------------------

[2002-11-11 03:46:53] [EMAIL PROTECTED]

I can't reproduce this, works fine for me:

[derick@kossu derick]$ php
<?php
$foo = "";

if (isset($foo)) {
        echo "IN HERE!\n";
}
?>
IN HERE!
[derick@kossu derick]$ php -v
PHP 4.3.0-pre2 (cli)
Copyright (c) 1997-2002 The PHP Group
Zend Engine v1.3.0, Copyright (c) 1998-2002 Zend Technologies
    with eXtended Debugger (xdebug) v1.1.0dev, Copyright (c) 2002 JDI
Media Solutions, by Derick Rethans


Please post a full reproducing script that we can copy & paste, but
keep it as small as possible.

Derick


------------------------------------------------------------------------

[2002-11-11 03:42:11] [EMAIL PROTECTED]

On 4.2.2 I've 

if(isset($namevar)){
//some statements
// It comes here if $namevar is set, even if $namevar="";
}

On 4.3.0-pre2 I've 

if(isset($namevar)){
//some statements
// It doesn't come if $namevar="";
}

You can't change that to much legacy....

------------------------------------------------------------------------


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Edit this bug report at http://bugs.php.net/?id=20353&edit=1