eventespresso / event-espresso-core

            // get the file

            require_once($path);

            // if the class isn't already declared somewhere

            if (class_exists($class_name, false) === false) {

                // so sorry, not a class

                throw new EE_Error(

                    sprintf(

                        __('The %s file %s does not appear to contain the %s Class.', 'event_espresso'),

                        $type,

                        $path,

                        $class_name

                    )

                );

            }

        } catch (EE_Error $e) {

            $e->get_error();

            return false;

            }

            $cleaned_value = $this->_construct_between_value($value, $field_obj);

            return $operator . SP . $cleaned_value;

        } elseif (in_array($operator, $this->valid_null_style_operators())) {

            if ($value !== null) {

                throw new EE_Error(

                    sprintf(

                        __(

                            "You attempted to give a value  (%s) while using a NULL-style operator (%s). That isn't valid",

                            "event_espresso"

                        ),

                        $value,

                        $operator

                    )

                );

            }

            return $operator;

        } elseif (in_array($operator, $this->valid_like_style_operators()) && ! is_array($value)) {

            //if the operator is 'LIKE', we want to allow percent signs (%) and not

            //remove other junk. So just treat it as a string.

            return $operator . SP . $this->_wpdb_prepare_using_field($value, '%s');