From:             adrian dot carstea at gmail dot com
Operating system: Fedora Core 4
PHP version:      5.1.2
PHP Bug Type:     Session related
Bug description:  post variables appear in session

Description:
------------
post variables appear in session after 3 posts... 
$_GET
Array
(
)
$_POST
Array
(
    [search_didi] => asd
    [submitare] => Cautare simpla // !!!!!!!!!
    [submit] => Cautare           // !!!!!!!!!
)
$_SESSION
Array
(
    [submitare] => Cautare simpla // !!!!!!!!!
    [submit] => Cautare           // !!!!!!!!!
    [search_didi] => asd
)



Reproduce code:
---------------
Source code tested on php5.0.4, php5.1.2 (works fine on php4.4.0)
<?
session_start();

if(isset($_POST['submitare']) && ($_POST['submitare']=='Cautare simpla' ||
$_POST['submitare']=='Cautare avansata')){

        foreach($_SESSION as $key=>$value){
             if(preg_match("@[EMAIL PROTECTED]",$key)){
                        unset($_SESSION["{$key}"]);
              }
        }
        foreach($_POST as $key=>$value){
                //echo $key."  ".$value."<hr>";
                if(preg_match("@[EMAIL PROTECTED]",$key)){
                        echo $key."=".$value."<hr>";
                        $_SESSION["{$key}"]=$value;
                }
        }

}
echo "<pre>";
print_r($_GET);
print_r($_POST);
print_r($_SESSION);
echo "</pre>";
if(!isset($_POST['submitare']) && !isset($_GET['page'])){
        foreach($_SESSION as $key=>$value){
                if(preg_match("@[EMAIL PROTECTED]",$key)){
                        unset($_SESSION["{$key}"]);
                }
        }
}
?>
<form action="" method="POST">
        Cauta: <input type="text" name="search_didi" value="" />
        <input type="hidden" name="submitare" value="Cautare simpla" />
        <input type="submit" name="submit" value="Cautare" />
</form>


Expected result:
----------------
$_GET
Array
(
)
$_POST
Array
(
    [search_didi] => asd
    [submitare] => Cautare simpla // !!!!!!!!!
    [submit] => Cautare           // !!!!!!!!!
)
$_SESSION
Array
(
    [search_didi] => asd
)




-- 
Edit bug report at http://bugs.php.net/?id=37050&edit=1
-- 
Try a CVS snapshot (PHP 4.4): 
http://bugs.php.net/fix.php?id=37050&r=trysnapshot44
Try a CVS snapshot (PHP 5.1): 
http://bugs.php.net/fix.php?id=37050&r=trysnapshot51
Try a CVS snapshot (PHP 6.0): 
http://bugs.php.net/fix.php?id=37050&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=37050&r=fixedcvs
Fixed in release:             
http://bugs.php.net/fix.php?id=37050&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=37050&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=37050&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=37050&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=37050&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=37050&r=notwrong
Not enough info:              
http://bugs.php.net/fix.php?id=37050&r=notenoughinfo
Submitted twice:              
http://bugs.php.net/fix.php?id=37050&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=37050&r=globals
PHP 3 support discontinued:   http://bugs.php.net/fix.php?id=37050&r=php3
Daylight Savings:             http://bugs.php.net/fix.php?id=37050&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=37050&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=37050&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=37050&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=37050&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=37050&r=mysqlcfg

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