op = $op; $this->query = $query; } /** * Perform any final clean up. * Remove any empty values to avoid errors. * * @return $this */ public function finalize() { $this->query = array_filter($this->query, function ($value) { return !empty($value) || is_bool($value) || is_numeric($value); }); return $this; } /** * Whether a offset exists * @link http://php.net/manual/en/arrayaccess.offsetexists.php * @param mixed $offset

* An offset to check for. *

* @return boolean true on success or false on failure. *

* The return value will be casted to boolean if non-boolean was returned. * @since 5.0.0 */ public function offsetExists($offset) { return isset($this->internal()[$offset]); } /** * Offset to retrieve * @link http://php.net/manual/en/arrayaccess.offsetget.php * @param mixed $offset

* The offset to retrieve. *

* @return mixed Can return all value types. * @since 5.0.0 */ public function offsetGet($offset) { return $this->internal()[$offset]; } /** * Offset to set * @link http://php.net/manual/en/arrayaccess.offsetset.php * @param mixed $offset

* The offset to assign the value to. *

* @param mixed $value

* The value to set. *

* @return void * @since 5.0.0 */ public function offsetSet($offset, $value) { $this->internal()[$offset] = $value; } /** * Offset to unset * @link http://php.net/manual/en/arrayaccess.offsetunset.php * @param mixed $offset

* The offset to unset. *

* @return void * @since 5.0.0 */ public function offsetUnset($offset) { unset($this->internal()[$offset]); } /** * Retrieve an external iterator * @link http://php.net/manual/en/iteratoraggregate.getiterator.php * @return \Traversable An instance of an object implementing Iterator or * Traversable * @since 5.0.0 */ public function getIterator() { return new \ArrayObject($this->internal()); } /** * Count elements of an object * @link http://php.net/manual/en/countable.count.php * @return int The custom count as an integer. *

* The return value is cast to an integer. * @since 5.1.0 */ public function count() { return count($this->internal()); } /** * For backward compatibility, previously we use array to represent the raw query * * @var array * * @return array */ private function internal() { return [$this->op, $this->query]; } }