Collection::filterBy PHP Method

    public function filterBy()
    {
        $args = func_get_args();
        $operator = '==';
        $field = @$args[0];
        $value = @$args[1];
        $split = @$args[2];
        $collection = clone $this;
        if (is_string($value) && array_key_exists($value, static::$filters)) {
            $operator = $value;
            $value = @$args[2];
            $split = @$args[3];
        }
        if (is_object($value)) {
            $value = (string) $value;
        }
        if (array_key_exists($operator, static::$filters)) {
            $collection = call_user_func_array(static::$filters[$operator], array($collection, $field, $value, $split));
        }
        return $collection;
    }