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<?php

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/**

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* Multidimensional ArrayAccess

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* Allows ArrayAccess-like functionality with multidimensional arrays. Fully supports

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* both sets and unsets.

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* @package WordPress

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* @subpackage Session

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* @since 3.6.0

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// Exit if accessed directly

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if ( ! defined( 'ABSPATH' ) ) exit;

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/**

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* Recursive array class to allow multidimensional array access.

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* @package WordPress

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* @since 3.6.0

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class Recursive_ArrayAccess implements ArrayAccess {

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/**

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* Internal data collection.

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* @var array

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protected $container = array();

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/**

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* Flag whether or not the internal collection has been changed.

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* @var bool

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protected $dirty = false;

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/**

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* Default object constructor.

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* @param array $data

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protected function __construct( $data = array() ) {

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foreach ( $data as $key => $value ) {

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$this[ $key ] = $value;

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}

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}

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/**

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* Allow deep copies of objects

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public function __clone() {

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foreach ( $this->container as $key => $value ) {

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if ( $value instanceof self ) {

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$this[ $key ] = clone $value;

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}

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}

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}

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/**

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* Output the data container as a multidimensional array.

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* @return array

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public function toArray() {

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$data = $this->container;

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foreach ( $data as $key => $value ) {

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if ( $value instanceof self ) {

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$data[ $key ] = $value->toArray();

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}

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}

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return $data;

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}

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/**

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* ArrayAccess Implementation

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**/

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/**

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* Whether a offset exists

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* @link http://php.net/manual/en/arrayaccess.offsetexists.php

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* @param mixed $offset An offset to check for.

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

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#[\ReturnTypeWillChange]

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public function offsetExists( $offset ) {

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return isset( $this->container[ $offset ]) ;

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}

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/**

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* Offset to retrieve

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* @link http://php.net/manual/en/arrayaccess.offsetget.php

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* @param mixed $offset The offset to retrieve.

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* @return mixed Can return all value types.

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#[\ReturnTypeWillChange]

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public function offsetGet( $offset ) {

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return isset( $this->container[ $offset ] ) ? $this->container[ $offset ] : null;

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}

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/**

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* Offset to set

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* @link http://php.net/manual/en/arrayaccess.offsetset.php

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* @param mixed $offset The offset to assign the value to.

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* @param mixed $value The value to set.

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* @return void

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#[\ReturnTypeWillChange]

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public function offsetSet( $offset, $data ) {

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if ( is_array( $data ) ) {

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$data = new self( $data );

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}

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if ( $offset === null ) { // don't forget this!

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$this->container[] = $data;

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} else {

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$this->container[ $offset ] = $data;

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}

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$this->dirty = true;

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}

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/**

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* Offset to unset

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* @link http://php.net/manual/en/arrayaccess.offsetunset.php

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* @param mixed $offset The offset to unset.

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* @return void

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#[\ReturnTypeWillChange]

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public function offsetUnset( $offset ) {

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unset( $this->container[ $offset ] );

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}

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}

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