Question

Possible Duplicate:
How to check if an array value exists

I have a problem in PHP. So, my problem is that I want to see if a particular value exists in a session (in which session I store an array). And if this value exists to return me a boolean ($check=TRUE). But when I try to stop the script with die (var_dump($check)); in order to check the value, I get always this notice:

Undefined variable check…

This is my code:

 $individualitem[] = $_SESSION["books"] ;

          foreach ($individualitem as $key => $idividualvalue){
            if($individualitem == $card){
                $check = TRUE;
            }     
         }  
     // die (var_dump($check));

Answer 1

Probably because the if condition is always false. Defined your $check before the actual foreach loop

$check = false;  
foreach ($individualitem as $key => $idividualvalue){
     if($individualitem == $card){
         $check = TRUE;
     }     
}  

But for your purpose, try

$check = false;
if (in_array($card, $individualitem)) {
    $check = true;
}