for loop on huge number

Question

PHP

$SCode=$_POST['SCode'];
$ECode=$_POST['ECode'];

for($p=$SCode;$p<$ECode;$p++)
{
    $dbResult= $dbHandle->query("
    SELECT Code
    FROM Mashaghel 
    Where Code=" . $p . "");
    if(!isset($Mashaghel[0]["Code"]) || empty($Mashaghel[0]["Code"]))
    {
        $errorCode.=$p."،";
    }
}
echo $errorCode."does not existed!";

i run this with

$_POST['SCode']='010100100101002084';
$_POST['ECode']='010100100101002087';

but this does not worked and say error Maximum execution time of 60 seconds exceeded While The difference between 010100100101002084 and 010100100101002087 only 3.

why for loop do infinite!?

please help me

Answer 1

Try this

for($p=0;$p<bcsub($ECode,$SCode);$p++)
    {
        $dbResult= $dbHandle->query("SELECT Code FROM Mashaghel
Where Code=" . bcadd($SCode,$p) . "");
        if(!isset($Mashaghel[0]["Code"]) || empty($Mashaghel[0]["Code"]))
        {
            $errorCode.=bcadd($SCode,$p)."،";
        }
    }