<?php
/**
* WordPress session managment.
*
* Standardizes WordPress session data and uses either database transients or in-memory caching
* for storing user session information.
*
* @package WordPress
* @subpackage Session
* @since 3.7.0
*/
// Exit if accessed directly
if ( ! defined( 'ABSPATH' ) ) exit;
/**
* Return the current cache expire setting.
*
* @return int
*/
function wp_session_cache_expire() {
$wp_session = WP_Session::get_instance();
return $wp_session->cache_expiration();
}
/**
* Alias of wp_session_write_close()
*/
function wp_session_commit() {
wp_session_write_close();
}
/**
* Load a JSON-encoded string into the current session.
*
* @param string $data
*/
function wp_session_decode( $data ) {
$wp_session = WP_Session::get_instance();
return $wp_session->json_in( $data );
}
/**
* Encode the current session's data as a JSON string.
*
* @return string
*/
function wp_session_encode() {
$wp_session = WP_Session::get_instance();
return $wp_session->json_out();
}
/**
* Regenerate the session ID.
*
* @param bool $delete_old_session
*
* @return bool
*/
function wp_session_regenerate_id( $delete_old_session = false ) {
$wp_session = WP_Session::get_instance();
$wp_session->regenerate_id( $delete_old_session );
return true;
}
/**
* Start new or resume existing session.
*
* Resumes an existing session based on a value sent by the _wp_session cookie.
*
* @return bool
*/
function wp_session_start() {
$wp_session = WP_Session::get_instance();
do_action( 'wp_session_start' );
return $wp_session->session_started();
}
add_action( 'plugins_loaded', 'wp_session_start' );
/**
* Return the current session status.
*
* @return int
*/
function wp_session_status() {
$wp_session = WP_Session::get_instance();
if ( $wp_session->session_started() ) {
return PHP_SESSION_ACTIVE;
}
return PHP_SESSION_NONE;
}
/**
* Unset all session variables.
*/
function wp_session_unset() {
$wp_session = WP_Session::get_instance();
$wp_session->reset();
}
/**
* Write session data and end session
*/
function wp_session_write_close() {
$wp_session = WP_Session::get_instance();
$wp_session->write_data();
do_action( 'wp_session_commit' );
}
add_action( 'shutdown', 'wp_session_write_close' );
/**
* Clean up expired sessions by removing data and their expiration entries from
* the WordPress options table.
*
* This method should never be called directly and should instead be triggered as part
* of a scheduled task or cron job.
*/
function wp_session_cleanup() {
global $wpdb;
if ( defined( 'WP_SETUP_CONFIG' ) ) {
return;
}
if ( ! defined( 'WP_INSTALLING' ) ) {
$expiration_keys = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options WHERE option_name LIKE '_wp_session_expires_%'" );
$now = current_time( 'timestamp' );
$expired_sessions = array();
foreach( $expiration_keys as $expiration ) {
// If the session has expired
if ( $now > intval( $expiration->option_value ) ) {
// Get the session ID by parsing the option_name
$session_id = substr( $expiration->option_name, 20 );
if( (int) -1 === (int) $session_id || ! preg_match( '/^[a-f0-9]{32}$/', $session_id ) ) {
continue;
}
$expired_sessions[] = $expiration->option_name;
$expired_sessions[] = esc_sql( "_wp_session_$session_id" );
}
}
// Delete all expired sessions in a single query
if ( ! empty( $expired_sessions ) ) {
$option_names = implode( "','", $expired_sessions );
$wpdb->query( "DELETE FROM $wpdb->options WHERE option_name IN ('$option_names')" );
}
}
// Allow other plugins to hook in to the garbage collection process.
do_action( 'wp_session_cleanup' );
}
add_action( 'wp_session_garbage_collection', 'wp_session_cleanup' );
/**
* Register the garbage collector as a twice daily event.
*/
function wp_session_register_garbage_collection() {
if ( ! wp_next_scheduled( 'wp_session_garbage_collection' ) ) {
wp_schedule_event( current_time( 'timestamp' ), 'twicedaily', 'wp_session_garbage_collection' );
}
}
add_action( 'wp', 'wp_session_register_garbage_collection' );
ما بقاش الذكاء الاصطناعي مجرد خيال علمي أو تطور مستنيينه في المستقبل… لأ، ده بقى واقع عايشينه كل يوم، وبيأثر بشكل مباشر على شغلنا، ومهاراتنا، وحتى على الوظايف نفسها. في الفيديو ده، هنتكلم عن إزاي الذكاء الاصطناعي قلب موازين سوق العمل، إيه المهن اللي بدأت تختفي، وإيه اللي طلع جديد، وإزاي نجهز نفسنا للمستقبل اللي بدأ خلاص.