<?php

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/**

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* NF Session

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*

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* This is a wrapper class for WP_Session / PHP $_SESSION and handles the storage of cart items, purchase sessions, etc

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*

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* @package Ninja Forms

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* @subpackage Classes/Session

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* @license http://opensource.org/licenses/gpl-2.0.php GNU Public License

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* @since 2.9.18

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*/

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// Exit if accessed directly

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

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/**

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* NF_Session Class

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*

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* @since 1.5

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*/

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class NF_Session {

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/**

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* Holds our session data

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*

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* @var array

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* @access private

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* @since 2.9.18

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*/

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private $session;

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/**

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* Session index prefix

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*

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* @var string

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* @access private

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* @since 2.9.18

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*/

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private $prefix = '';

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/**

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* Get things started

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*

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* Defines our WP_Session constants, includes the necessary libraries and

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* retrieves the WP Session instance

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*

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* @since 2.9.18

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*/

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public function __construct() {

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// Use WP_Session (default)

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if ( ! defined( 'WP_SESSION_COOKIE' ) ) {

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define( 'WP_SESSION_COOKIE', 'nf_wp_session' );

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}

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if ( ! class_exists( 'Recursive_ArrayAccess' ) ) {

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require_once NF_PLUGIN_DIR . 'includes/libraries/class-recursive-arrayaccess.php';

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}

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if ( ! class_exists( 'WP_Session' ) ) {

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require_once NF_PLUGIN_DIR . 'includes/libraries/class-wp-session.php';

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require_once NF_PLUGIN_DIR . 'includes/libraries/wp-session.php';

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}

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add_filter( 'wp_session_expiration_variant', array( $this, 'set_expiration_variant_time' ), 99999 );

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add_filter( 'wp_session_expiration', array( $this, 'set_expiration_time' ), 99999 );

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add_action( 'plugins_loaded', array( $this, 'init' ), -1 );

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}

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/**

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* Setup the WP_Session instance

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*

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* @access public

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* @since 2.9.18

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* @return void

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*/

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public function init() {

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$this->session = WP_Session::get_instance();

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return $this->session;

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}

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/**

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* Retrieve session ID

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*

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* @access public

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* @since 2.9.18

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* @return string Session ID

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*/

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public function get_id() {

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return $this->session->session_id;

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}

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/**

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* Retrieve a session variable

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*

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* @access public

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* @since 2.9.18

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* @param string $key Session key

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* @return string Session variable

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*/

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public function get( $key ) {

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$key = sanitize_key( $key );

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return isset( $this->session[ $key ] ) ? maybe_unserialize( $this->session[ $key ] ) : false;

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}

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/**

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* Set a session variable

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*

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* @since 2.9.18

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* @param string $key Session key

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* @param integer $value Session variable

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* @return string Session variable

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*/

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public function set( $key, $value ) {

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$key = sanitize_key( $key );

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if ( is_array( $value ) ) {

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$this->session[ $key ] = serialize( $value );

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} else {

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$this->session[ $key ] = $value;

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}

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return $this->session[ $key ];

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}

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/**

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* Delete a session variable

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*

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* @since 2.9.28

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* @param string $key

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* @return void

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*/

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public function delete() {

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delete_option( '_wp_session_' . $this->session->session_id );

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delete_option( '_wp_session_expires_' . $this->session->session_id );

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}

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/**

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* Force the cookie expiration variant time to 23 minutes

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*

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* @access public

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* @since 2.9.18

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* @param int $exp Default expiration (1 hour)

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* @return int

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*/

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public function set_expiration_variant_time( $exp ) {

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return 60 * 23;

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}

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/**

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* Force the cookie expiration time to 24 minutes

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*

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* @access public

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* @since 2.9.18

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* @param int $exp Default expiration (1 hour)

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* @return int

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*/

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public function set_expiration_time( $exp ) {

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return 60 * 24;

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}

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}

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