Gmail Email Filter

Gmail Email Filter

<?php
function fraud_gmail($user_email)
{
    $user_email = strtolower($user_email);
    $data = explode('@', $user_email);
    if(count($data)===2)
    {
        if(preg_match("/g(oogle)?mail(.*)/", $data[1], $ext))
        {
            $trick = explode('+', $data[0]);
            if(count($trick)>0)
            {
                $data[0] = $trick[0];
            }
            $user_email = str_replace(array('.','+'), '', $data[0]).'@gmail'.$ext[2];
        }
    }
    return $user_email;
}
?>