Garena Email Checker

<?php
/* GARENA EMAIL CHECKER BY 0xCOR3 | Security Ghost
/* Thanks To Con7ext */
/* USAGE : php file.php list.txt */
error_reporting(0);
$m="\033[1;31m";
$k="\033[1;33m";
$h="\033[1;32m";
$b="\033[1;34m";
if($argv[1]){
    function cek($url){
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)");
        $ex = curl_exec($ch);
        curl_close($ch);
        return($ex);
    }
    $list = explode("\r\n", file_get_contents($argv[1]));
    echo $b."====================================\n";
    $i = 1;
    foreach ($list as $mail) {
        $cek = cek("https://sso.garena.com/api/register/check?email=".$mail."&format=json&id=1529057399075");
        if(preg_match("/error_email_existed/i", $cek)){
            echo $b.$i++.") ".$k.$mail.$h." -> Registered\n";
        }else{
            echo $b.$i++.") ".$m.$mail." -> Not Registered\n";
        }
    }
    echo $b."====================================\n";
}else{
    echo "Usage : php ".$argv[0]." list.txt";
}
?>