WordPress:wp-settings.php

Un article de Wiki.

Sommaire

1 Introduction
2 Database
3 Languages
4 Contenu du fichier wp-settings.php

[modifier] Introduction

Ce fichier est le boot racine de WordPress. Il est appelé à chaque appel d'un blog sous WordPress.

Le fichier WordPress:wp-config.php est le seul qui inclut le fichier wp-settings.php. En effet, le fichier wp-config.php contient les variables d'installation (accès MySQL, langue).

La séquence des includes des fichiers montre bien l'ordre d'initialisation des différents modules.

Ainsi, on peut voir que le fichier pluggable.php est appelé après le chargement des plugins.

On peut donc dans un plugin redéfinir une de ces fonctions. Attention à ne pas créer de conflit entre plusieurs plugins qui redéfiniraient la même fonction.
A l'inverse, on ne peut pas directement exécuter les fonctions de pluggable.php dans les plugins! Il faut utiliser les add_action ou add_filter pour déporter les traitements plus loin (par exemple avec 'init').

Pour ceux qui en doutaient, on détecte clairement dans le code de nombreux objets. De plus, l'utilisation de référence prouve une utilisation plus optimisée de la mémoire.

Par contre, au vu du code chargé, je pense qu"il y a moyen d'optimiser le nombre de lignes de code exécuté.

[modifier] Database

Le fichier db.php est exécuté s'il est présent dans le dossier wp-content/ autrement WP charge le code dans WordPress:wp-includes/wp-db.php.. On peut donc faire un hack en créant un fichier db.php pour exécuter ses propres instructions et puis inclure la commande standard pour conserver le comportement normal:

	require_once (ABSPATH . WPINC . '/wp-db.php');

Ce hack peut être utile car le fichier db.php est chargé assez tôt dans le code.

if ( file_exists(ABSPATH . 'wp-content/db.php') )
	require (ABSPATH . 'wp-content/db.php');
else
	require_once (ABSPATH . WPINC . '/wp-db.php');

[modifier] Languages

La constante LANGDIR est définie dynamiquement:

en priorité, le dossier wp-content/languages/ est pris en compte
si le dossier wp-content/languages/ n'existe pas alors, c'est le dossier wp-includes/languages/

Cela peut être utile pour définir des hacks: le fichier LANGDIR/locale.php est chargé si il existe. Mais il est exécuté assez tardivement.

if ( !defined('LANGDIR') ) {
	if ( file_exists(ABSPATH . 'wp-content/languages') && @is_dir(ABSPATH . 'wp-content/languages') )
		define('LANGDIR', 'wp-content/languages'); // no leading slash, no trailing slash
	else
		define('LANGDIR', WPINC . '/languages'); // no leading slash, no trailing slash
}

Plus loin:

$locale = get_locale();
$locale_file = ABSPATH . LANGDIR . "/$locale.php";
if ( is_readable($locale_file) )
	require_once($locale_file);

// Pull in locale data after loading text domain.
require_once(ABSPATH . WPINC . '/locale.php');

$wp_locale =& new WP_Locale();

[modifier] Contenu du fichier wp-settings.php

(Note: extrait de WP 2.2)

<?php
// Turn register globals off
function wp_unregister_GLOBALS() {
	if ( !ini_get('register_globals') )
		return;

	if ( isset($_REQUEST['GLOBALS']) )
		die('GLOBALS overwrite attempt detected');

	// Variables that shouldn't be unset
	$noUnset = array('GLOBALS', '_GET', '_POST', '_COOKIE', '_REQUEST', '_SERVER', '_ENV', '_FILES', 'table_prefix');

	$input = array_merge($_GET, $_POST, $_COOKIE, $_SERVER, $_ENV, $_FILES, isset($_SESSION) && is_array($_SESSION) ? $_SESSION : array());
	foreach ( $input as $k => $v ) 
		if ( !in_array($k, $noUnset) && isset($GLOBALS[$k]) ) {
			$GLOBALS[$k] = NULL;
			unset($GLOBALS[$k]);
		}
}

wp_unregister_GLOBALS(); 

unset( $wp_filter, $cache_userdata, $cache_lastcommentmodified, $cache_lastpostdate, $cache_settings, $category_cache, $cache_categories );

if ( ! isset($blog_id) )
	$blog_id = 1;

// Fix for IIS, which doesn't set REQUEST_URI
if ( empty( $_SERVER['REQUEST_URI'] ) ) {
	$_SERVER['REQUEST_URI'] = $_SERVER['SCRIPT_NAME']; // Does this work under CGI?

	// Append the query string if it exists and isn't null
	if (isset($_SERVER['QUERY_STRING']) && !empty($_SERVER['QUERY_STRING'])) {
		$_SERVER['REQUEST_URI'] .= '?' . $_SERVER['QUERY_STRING'];
	}
}

// Fix for PHP as CGI hosts that set SCRIPT_FILENAME to something ending in php.cgi for all requests
if ( isset($_SERVER['SCRIPT_FILENAME']) && ( strpos($_SERVER['SCRIPT_FILENAME'], 'php.cgi') == strlen($_SERVER['SCRIPT_FILENAME']) - 7 ) )
	$_SERVER['SCRIPT_FILENAME'] = $_SERVER['PATH_TRANSLATED'];

// Fix for Dreamhost and other PHP as CGI hosts
if (strpos($_SERVER['SCRIPT_NAME'], 'php.cgi') !== false)
	unset($_SERVER['PATH_INFO']);

// Fix empty PHP_SELF
$PHP_SELF = $_SERVER['PHP_SELF'];
if ( empty($PHP_SELF) )
	$_SERVER['PHP_SELF'] = $PHP_SELF = preg_replace("/(\?.*)?$/",,$_SERVER["REQUEST_URI"]);

if ( !(phpversion() >= '4.1') )
	die( 'Your server is running PHP version ' . phpversion() . ' but WordPress requires at least 4.1' );

if ( !extension_loaded('mysql') && !file_exists(ABSPATH . 'wp-content/db.php') )
	die( 'Your PHP installation appears to be missing the MySQL which is required for WordPress.' );

function timer_start() {
	global $timestart;
	$mtime = explode(' ', microtime() );
	$mtime = $mtime[1] + $mtime[0];
	$timestart = $mtime;
	return true;
}

function timer_stop($display = 0, $precision = 3) { //if called like timer_stop(1), will echo $timetotal
	global $timestart, $timeend;
	$mtime = microtime();
	$mtime = explode(' ',$mtime);
	$mtime = $mtime[1] + $mtime[0];
	$timeend = $mtime;
	$timetotal = $timeend-$timestart;
	$r = number_format($timetotal, $precision);
	if ( $display )
		echo $r;
	return $r;
}
timer_start();

// Change to E_ALL for development/debugging
error_reporting(E_ALL ^ E_NOTICE);

// For an advanced caching plugin to use, static because you would only want one
if ( defined('WP_CACHE') )
	require (ABSPATH . 'wp-content/advanced-cache.php');

define('WPINC', 'wp-includes');

if ( !defined('LANGDIR') ) {
	if ( file_exists(ABSPATH . 'wp-content/languages') && @is_dir(ABSPATH . 'wp-content/languages') )
		define('LANGDIR', 'wp-content/languages'); // no leading slash, no trailing slash
	else
		define('LANGDIR', WPINC . '/languages'); // no leading slash, no trailing slash
}

if ( !defined('PLUGINDIR') )
	define('PLUGINDIR', 'wp-content/plugins'); // no leading slash, no trailing slash
if ( file_exists(ABSPATH . 'wp-content/db.php') )
	require (ABSPATH . 'wp-content/db.php');
else
	require_once (ABSPATH . WPINC . '/wp-db.php');

// $table_prefix is deprecated as of 2.1
$wpdb->prefix = $table_prefix;

if ( preg_match('|[^a-z0-9_]|i', $wpdb->prefix) && !file_exists(ABSPATH . 'wp-content/db.php') )
	die("ERROR: $table_prefix in wp-config.php can only contain numbers, letters, and underscores.");

// Table names
$wpdb->posts          = $wpdb->prefix . 'posts';
$wpdb->users          = $wpdb->prefix . 'users';
$wpdb->categories     = $wpdb->prefix . 'categories';
$wpdb->post2cat       = $wpdb->prefix . 'post2cat';
$wpdb->comments       = $wpdb->prefix . 'comments';
$wpdb->link2cat       = $wpdb->prefix . 'link2cat';
$wpdb->links          = $wpdb->prefix . 'links';
$wpdb->options        = $wpdb->prefix . 'options';
$wpdb->postmeta       = $wpdb->prefix . 'postmeta';
$wpdb->usermeta       = $wpdb->prefix . 'usermeta';

if ( defined('CUSTOM_USER_TABLE') )
	$wpdb->users = CUSTOM_USER_TABLE;
if ( defined('CUSTOM_USER_META_TABLE') )
	$wpdb->usermeta = CUSTOM_USER_META_TABLE;

if ( file_exists(ABSPATH . 'wp-content/object-cache.php') )
	require (ABSPATH . 'wp-content/object-cache.php');
else
	require (ABSPATH . WPINC . '/cache.php');

wp_cache_init();

require (ABSPATH . WPINC . '/functions.php');
require (ABSPATH . WPINC . '/classes.php');
require (ABSPATH . WPINC . '/plugin.php');
require (ABSPATH . WPINC . '/default-filters.php');
include_once(ABSPATH . WPINC . '/streams.php');
include_once(ABSPATH . WPINC . '/gettext.php');
require_once (ABSPATH . WPINC . '/l10n.php');

if ( !is_blog_installed() && (strpos($_SERVER['PHP_SELF'], 'install.php') === false && !defined('WP_INSTALLING')) ) {
	if (strpos($_SERVER['PHP_SELF'], 'wp-admin') !== false)
		$link = 'install.php';
	else
		$link = 'wp-admin/install.php';
	wp_die(sprintf("It doesn't look like you've installed WP yet. Try running <a href='%s'>install.php</a>.", $link));
}

require (ABSPATH . WPINC . '/formatting.php');
require (ABSPATH . WPINC . '/capabilities.php');
require (ABSPATH . WPINC . '/query.php');
require (ABSPATH . WPINC . '/theme.php');
require (ABSPATH . WPINC . '/user.php');
require (ABSPATH . WPINC . '/general-template.php');
require (ABSPATH . WPINC . '/link-template.php');
require (ABSPATH . WPINC . '/author-template.php');
require (ABSPATH . WPINC . '/post.php');
require (ABSPATH . WPINC . '/post-template.php');
require (ABSPATH . WPINC . '/category.php');
require (ABSPATH . WPINC . '/category-template.php');
require (ABSPATH . WPINC . '/comment.php');
require (ABSPATH . WPINC . '/comment-template.php');
require (ABSPATH . WPINC . '/rewrite.php');
require (ABSPATH . WPINC . '/feed.php');
require (ABSPATH . WPINC . '/bookmark.php');
require (ABSPATH . WPINC . '/bookmark-template.php');
require (ABSPATH . WPINC . '/kses.php');
require (ABSPATH . WPINC . '/cron.php');
require (ABSPATH . WPINC . '/version.php');
require (ABSPATH . WPINC . '/deprecated.php');
require (ABSPATH . WPINC . '/script-loader.php');

if (strpos($_SERVER['PHP_SELF'], 'install.php') === false) {
    // Used to guarantee unique hash cookies
    $cookiehash = md5(get_option('siteurl'));
	define('COOKIEHASH', $cookiehash); 
}

if ( !defined('USER_COOKIE') )
	define('USER_COOKIE', 'wordpressuser_'. COOKIEHASH);
if ( !defined('PASS_COOKIE') )
	define('PASS_COOKIE', 'wordpresspass_'. COOKIEHASH);
if ( !defined('COOKIEPATH') )
	define('COOKIEPATH', preg_replace('|https?://[^/]+|i', , get_option('home') . '/' ) );
if ( !defined('SITECOOKIEPATH') )
	define('SITECOOKIEPATH', preg_replace('|https?://[^/]+|i', , get_option('siteurl') . '/' ) );
if ( !defined('COOKIE_DOMAIN') )
	define('COOKIE_DOMAIN', false);

require (ABSPATH . WPINC . '/vars.php');

// Check for hacks file if the option is enabled
if (get_option('hack_file')) {
	if (file_exists(ABSPATH . '/my-hacks.php'))
		require(ABSPATH . '/my-hacks.php');
}

if ( get_option('active_plugins') ) {
	$current_plugins = get_option('active_plugins');
	if ( is_array($current_plugins) ) {
		foreach ($current_plugins as $plugin) {
			if ( != $plugin && file_exists(ABSPATH . PLUGINDIR . '/' . $plugin))
				include_once(ABSPATH . PLUGINDIR . '/' . $plugin);
		}
	}
}

require (ABSPATH . WPINC . '/pluggable.php');

if ( defined('WP_CACHE') && function_exists('wp_cache_postload') )
	wp_cache_postload();

do_action('plugins_loaded');

// If already slashed, strip.
if ( get_magic_quotes_gpc() ) {
	$_GET    = stripslashes_deep($_GET   );
	$_POST   = stripslashes_deep($_POST  );
	$_COOKIE = stripslashes_deep($_COOKIE);
}

// Escape with wpdb.
$_GET    = add_magic_quotes($_GET   );
$_POST   = add_magic_quotes($_POST  );
$_COOKIE = add_magic_quotes($_COOKIE);
$_SERVER = add_magic_quotes($_SERVER);

do_action('sanitize_comment_cookies');

$wp_the_query =& new WP_Query();
$wp_query     =& $wp_the_query;
$wp_rewrite   =& new WP_Rewrite();
$wp           =& new WP();

validate_current_theme();
define('TEMPLATEPATH', get_template_directory());
define('STYLESHEETPATH', get_stylesheet_directory());

// Load the default text localization domain.
load_default_textdomain();

$locale = get_locale();
$locale_file = ABSPATH . LANGDIR . "/$locale.php";
if ( is_readable($locale_file) )
	require_once($locale_file);

// Pull in locale data after loading text domain.
require_once(ABSPATH . WPINC . '/locale.php');

$wp_locale =& new WP_Locale();

// Load functions for active theme.
if ( TEMPLATEPATH !== STYLESHEETPATH && file_exists(STYLESHEETPATH . '/functions.php') )
	include(STYLESHEETPATH . '/functions.php');
if ( file_exists(TEMPLATEPATH . '/functions.php') )
	include(TEMPLATEPATH . '/functions.php');

function shutdown_action_hook() {
	do_action('shutdown');
	wp_cache_close();
}
register_shutdown_function('shutdown_action_hook');

// Everything is loaded and initialized.
do_action('init');

?>

Récupérée de « http://my.sambazen.net/wiki/index.php/WordPress:wp-settings.php »

WordPress:wp-settings.php

Un article de Wiki.

Sommaire

[modifier] Introduction

[modifier] Database

[modifier] Languages

[modifier] Contenu du fichier wp-settings.php

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