<?php

function ozh_is_blacklisted( $url ) {

    $parsed = parse_url( $url );

    if( !isset( $parsed['host'] ) )
        return 'malformed';

    // Remove www. from domain (but not from www.com)
    $parsed['host'] = preg_replace( '/^www\.(.+\.)/i', '$1', $parsed['host'] );

    // The 3 major blacklists
    $blacklists = array(
//        'zen.spamhaus.org',
  //      'multi.surbl.org',
//      'black.uribl.com',
        'dbl.spamhaus.org'
    );

    // Check against each black list, exit if blacklisted
    foreach( $blacklists as $blacklist ) {
        $domain = $parsed['host'] . '.' . $blacklist . '.';
        $record = dns_get_record( $domain );
var_dump($record);
        if( count( $record ) > 0 )
            return 'listed';
    }

    // All clear, probably not spam
    return 'NOOOOOOOOOOO';
}
print_r($argv[1]);
print ozh_is_blacklisted('http://'.$argv[1]);
~