Help me stop DDoS

Please write to function fully, I will correct it

includes/function.php

    function server_busy($numer){
    if (PHP_OS == 'Linux' AND @file_exists('/proc/loadavg') AND $filestuff =@file_get_contents('/proc/loadavg')){
    $loadavg = explode(' ', $filestuff);
    if (trim($loadavg[0]) > $numer) {
    print 'server busy, Please wait….';
    exit(0);
    }
    }
    } 

    $srv = server_busy('5.00');
?>

Thanks

12. QuyCuong, Checked out your function, it works.
Maybe file /proc/loadavg is not readable?

<?php
function server_busy($numer){
    if (PHP_OS == 'Linux' AND @file_exists('/proc/loadavg') AND $filestuff =@file_get_contents('/proc/loadavg')){
        $loadavg = explode(' ', $filestuff);
        if (trim($loadavg[0]) > $numer) {
                echo 'server busy, Please wait.';
                exit(0);
        }
        # :D EBUG
        # else {
        #       echo "OK";
        #}
        return trim($loadavg[0];
    }
}

$srv = server_busy('1.00');
?>

shilo (8 Мая 2013 / 10:00)

<?php
function server_busy($numer){
    if (PHP_OS == 'Linux' AND @file_exists('/proc/loadavg') AND $filestuff =@file_get_contents('/proc/loadavg')){
        $loadavg = explode(' ', $filestuff);
        if (trim($loadavg[0]) > $numer) {
                echo 'server busy, Please wait.';
                exit(0);
        }
        # :D EBUG
        # else {
        #       echo "OK";
        #}
        return trim($loadavg[0];
    }
}

$srv = server_busy('1.00');
?>

It does not work, 501 hits without notice : Server busy , Please wait...

You probably do not quite understand what the script does ...
His script displays an error if the server is overloaded. it does not function as antiddos.

for example, I rather $ s r v = s e r v e r _ b u s y ( ' 1 . 0 0 ' ) ; In order to check, why? I
want test some hits in 10 people

To eliminate such problems should the administration of your server.
P.S. I do not speak English. But I think what you understand me.