Context
-------

$_SERVER: Array
(
    [HTTP_USER_AGENT] => PHP/5.2.17
    [HTTP_HOST] => www.finanzaediritto.it
    [HTTP_ACCEPT] => */*
    [PATH] => /bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin
    [SERVER_SIGNATURE] => {empty_string}
    [SERVER_SOFTWARE] => Apache
    [SERVER_NAME] => www.finanzaediritto.it
    [SERVER_ADDR] => 93.95.216.172
    [SERVER_PORT] => 80
    [REMOTE_ADDR] => 93.95.216.172
    [DOCUMENT_ROOT] => /home/admin/domains/finanzaediritto.it/public_html
    [SERVER_ADMIN] => webmaster@finanzaedirittoit.assofondazioni.it
    [SCRIPT_FILENAME] => /home/admin/domains/finanzaediritto.it/public_html/mysimpleads/mysa_output.php
    [REMOTE_PORT] => 48831
    [GATEWAY_INTERFACE] => CGI/1.1
    [SERVER_PROTOCOL] => HTTP/1.1
    [REQUEST_METHOD] => GET
    [QUERY_STRING] => r=54.242.188.217&h=www.finanzaediritto.it&rf=&ua=CCBot%2F2.0&show_ad_group=7
    [REQUEST_URI] => /mysimpleads/mysa_output.php?r=54.242.188.217&h=www.finanzaediritto.it&rf=&ua=CCBot%2F2.0&show_ad_group=7
    [SCRIPT_NAME] => /mysimpleads/mysa_output.php
    [PHP_SELF] => /mysimpleads/mysa_output.php
    [REQUEST_TIME] => 1369377046
    [argv] => Array
        (
            [0] => r=54.242.188.217&h=www.finanzaediritto.it&rf=&ua=CCBot%2F2.0&show_ad_group=7
        )
  
    [argc] => 1
)

$_POST: Array
(
)

$_GET: Array
(
    [r] => 54.242.188.217
    [h] => www.finanzaediritto.it
    [rf] => {empty_string}
    [ua] => CCBot/2.0
    [show_ad_group] => 7
)

$_FILES: Array
(
)

$_SESSION: {null}

$_COOKIE: Array
(
)

Warning
-------
{doc_root}/mysimpleads/mysa_output.php(13): show_ad_group('7')
{doc_root}/mysimpleads/mysimpleads.php(2): show_ad(-1, '7')
{doc_root}/mysimpleads/mysimpleads.php(2): implode(',', '')
[internal function]
implode(): Invalid arguments passed