<?php
session_start();
ob_start();
		error_reporting(0); 
	@ini_set('display_error', 0);    include("../cludes/connect.inc.php");
	

$qu=$db->query("select * FROM mdata " )or die(mysqli_error());
while($ro=mysqli_fetch_array($qu)){
$ssn = $ro['sn'];
$pass = rand(1000,9999);

$res2 = $db->query("UPDATE mdata SET pass='$pass' WHERE sn='$ssn' ") or die(mysqli_error());

}		
	
	echo 'OPERAtion COMplete';

?>