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Simple PHP Script Anti Flood DDoS

http://yorktown.cbe.wwu.edu/sandvig/mis314/lectures/images/PhpScript.png

<?php
//
// Description : Script anti flood
// Version      : 0.0.1
// Auteur       : Atmoner
// Url          : http://httpscript.org
//
if (!isset($_SESSION)) {
    session_start();
}
// anti flood protection
if($_SESSION['last_session_request'] > time() - 2){
    // users will be redirected to this page if it makes requests faster than 2 seconds
    header("location: http://junookyo.blogspot.com/");
    exit;
}
$_SESSION['last_session_request'] = time();
?>


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