Client-side logging

function console_log() {
    if (func_num_args()) {
        $args = func_get_args();
        service('eyex', 'rawjs', array('js' =>
            'if (console && console.log) console.log(' .
            implode(', ', array_map(create_function('$arg',
            'return "\'$arg\'";'), $args)) . ');'));
    }
}