ini_set('default_socket_timeout', 900); // 900 Seconds = 15 Minutes
Another way, to set a timeout, would be to use stream_context_create to set the timeout as HTTP context options of the HTTP stream wrapper in use:
 
$ctx = stream_context_create(array('http'=>
    array(
        'timeout' => 1200,  //1200 Seconds is 20 Minutes
    )
));
 
echo file_get_contents('http://example.com/', false, $ctx);

$msg->delivery_info['channel']->basic_ack($msg->delivery_info['delivery_tag']);
$msg->delivery_info['channel']->basic_nack($msg->delivery_info['delivery_tag'], false, true);
$msg->delivery_info['channel']->basic_cancel($msg->delivery_info['consumer_tag']);