get_mx.php

function get_mx($email)
{
    // Get domain name from email
    $domain = substr(strrchr($email, "@"), 1);

    // get MX records for domain
    getmxrr($domain, $mxhosts);

    // Match records with three options
    preg_match('/google|hotmail|yahoo/i', implode(' ', $mxhosts), $matches);

    // return option
    return strtolower($matches[0]);
}

Hello samin, awesome script. Just a thing: in this case it should be get_mx($email) instead of get_mx($domain)

@danielapan edited