Session problem in IE and Google Chrome not in Mozilla Firefox

if(empty($_SESSION['count'])){
    $_SESSION['count']=99; 
}else{
   $_SESSION['count']--;
}
echo $_SESSION['count'];

In Firefox, I get decrement开发者_JS百科ed value but in IE and Chrome it does not decrement the value as well as setting the value. Can anyone tell what's the problem?

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This seems to work. Notice that i check for isset($_SESSION['temp']) here, not empty($_SESSION['count']:

<?php
session_start();

if(!isset($_SESSION['temp'])){
    $_SESSION['temp']=99; 
}else{
   $_SESSION['temp']--;
}
echo $_SESSION['temp'];

?>

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PHP code runs on the server, so every browser get's the same result. If it works with one browser but not with others, they have probably different settings. I would check, that all browsers allow setting of a session-cookie, otherwise they will start a new session every time they call your script.

As iHaveacomputer already pointed out, the function empty() won't work in your example, because it will consider the value 0 as empty and therefore start counting with 99. Use isset() or array_key_exists() instead.