Improve inline documentation for wp-includes/load.php.
Props ericlewis, DrewAPicture. Fixes #24886. git-svn-id: https://develop.svn.wordpress.org/trunk@28656 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Drew Jaynes (DrewAPicture)
parent
b884487767
commit
9232548142
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@ -10,9 +10,10 @@
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/**
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* Turn register globals off.
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*
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* @access private
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* @since 2.1.0
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* @return null Will return null if register_globals PHP directive was disabled
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* @access private
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*
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* @return null Will return null if register_globals PHP directive was disabled.
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*/
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function wp_unregister_GLOBALS() {
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if ( !ini_get( 'register_globals' ) )
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@ -32,10 +33,13 @@ function wp_unregister_GLOBALS() {
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}
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/**
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* Fix $_SERVER variables for various setups.
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* Fix `$_SERVER` variables for various setups.
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*
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* @access private
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* @since 3.0.0
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* @access private
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*
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* @global string $PHP_SELF The filename of the currently executing script,
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* relative to the document root.
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*/
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function wp_fix_server_vars() {
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global $PHP_SELF;
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@ -92,16 +96,21 @@ function wp_fix_server_vars() {
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}
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/**
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* Check for the required PHP version, and the MySQL extension or a database drop-in.
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* Check for the required PHP version, and the MySQL extension or
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* a database drop-in.
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*
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* Dies if requirements are not met.
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*
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* @access private
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* @since 3.0.0
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* @access private
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*
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* @global string $required_php_version The required PHP version string.
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* @global string $wp_version The WordPress version string.
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*/
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function wp_check_php_mysql_versions() {
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global $required_php_version, $wp_version;
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$php_version = phpversion();
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if ( version_compare( $required_php_version, $php_version, '>' ) ) {
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wp_load_translations_early();
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header( 'Content-Type: text/html; charset=utf-8' );
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@ -117,6 +126,7 @@ function wp_check_php_mysql_versions() {
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/**
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* Don't load all of WordPress when handling a favicon.ico request.
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*
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* Instead, send the headers for a zero-length favicon and bail.
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*
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* @since 3.0.0
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@ -130,7 +140,7 @@ function wp_favicon_request() {
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}
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/**
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* Dies with a maintenance message when conditions are met.
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* Die with a maintenance message when conditions are met.
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*
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* Checks for a file in the WordPress root directory named ".maintenance".
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* This file will contain the variable $upgrading, set to the time the file
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@ -140,8 +150,10 @@ function wp_favicon_request() {
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* The default message can be replaced by using a drop-in (maintenance.php in
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* the wp-content directory).
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*
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* @access private
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* @since 3.0.0
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* @access private
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*
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* @global int $upgrading the unix timestamp marking when upgrading WordPress began.
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*/
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function wp_maintenance() {
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if ( !file_exists( ABSPATH . '.maintenance' ) || defined( 'WP_INSTALLING' ) )
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@ -184,11 +196,14 @@ function wp_maintenance() {
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}
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/**
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* PHP 5 standard microtime start capture.
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* Start the WordPress micro-timer.
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*
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* @access private
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* @since 0.71
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* @global float $timestart Seconds from when function is called.
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* @access private
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*
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* @global float $timestart Unix timestamp set at the beginning of the page load.
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* @see timer_stop()
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*
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* @return bool Always returns true.
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*/
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function timer_start() {
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@ -223,33 +238,34 @@ function timer_stop( $display = 0, $precision = 3 ) {
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}
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/**
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* Sets PHP error handling and handles WordPress debug mode.
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* Set PHP error reporting based on WordPress debug settings.
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*
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* Uses three constants: WP_DEBUG, WP_DEBUG_DISPLAY, and WP_DEBUG_LOG. All three can be
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* defined in wp-config.php. Example: <code> define( 'WP_DEBUG', true ); </code>
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* Uses three constants: `WP_DEBUG`, `WP_DEBUG_DISPLAY`, and `WP_DEBUG_LOG`.
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* All three can be defined in wp-config.php, and by default are set to false.
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*
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* WP_DEBUG_DISPLAY and WP_DEBUG_LOG perform no function unless WP_DEBUG is true.
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* WP_DEBUG defaults to false.
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* When `WP_DEBUG` is true, all PHP notices are reported. WordPress will also
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* display internal notices: when a deprecated WordPress function, function
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* argument, or file is used. Deprecated code may be removed from a later
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* version.
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*
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* When WP_DEBUG is true, all PHP notices are reported. WordPress will also display
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* notices, including one when a deprecated WordPress function, function argument,
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* or file is used. Deprecated code may be removed from a later version.
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* It is strongly recommended that plugin and theme developers use `WP_DEBUG`
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* in their development environments.
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*
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* It is strongly recommended that plugin and theme developers use WP_DEBUG in their
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* development environments.
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* `WP_DEBUG_DISPLAY` and `WP_DEBUG_LOG` perform no function unless `WP_DEBUG`
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* is true.
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*
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* When WP_DEBUG_DISPLAY is true, WordPress will force errors to be displayed.
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* WP_DEBUG_DISPLAY defaults to true. Defining it as null prevents WordPress from
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* changing the global configuration setting. Defining WP_DEBUG_DISPLAY as false
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* will force errors to be hidden.
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* When `WP_DEBUG_DISPLAY` is true, WordPress will force errors to be displayed.
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* `WP_DEBUG_DISPLAY` defaults to true. Defining it as null prevents WordPress
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* from changing the global configuration setting. Defining `WP_DEBUG_DISPLAY`
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* as false will force errors to be hidden.
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*
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* When WP_DEBUG_LOG is true, errors will be logged to wp-content/debug.log.
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* WP_DEBUG_LOG defaults to false.
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* When `WP_DEBUG_LOG` is true, errors will be logged to debug.log in the content
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* directory.
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*
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* Errors are never displayed for XML-RPC requests.
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*
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* @access private
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* @since 3.0.0
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* @access private
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*/
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function wp_debug_mode() {
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if ( WP_DEBUG ) {
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@ -272,30 +288,42 @@ function wp_debug_mode() {
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}
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/**
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* Sets the location of the language directory.
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* Set the location of the language directory.
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*
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* To set directory manually, define <code>WP_LANG_DIR</code> in wp-config.php.
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* To set directory manually, define the `WP_LANG_DIR` constant
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* in wp-config.php.
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*
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* If the language directory exists within WP_CONTENT_DIR, that is used.
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* Otherwise if the language directory exists within WPINC, that's used.
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* Finally, if neither of the preceding directories are found,
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* WP_CONTENT_DIR/languages is used.
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* If the language directory exists within `WP_CONTENT_DIR`, it
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* is used. Otherwise the language directory is assumed to live
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* in `WPINC`.
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*
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* The WP_LANG_DIR constant was introduced in 2.1.0.
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*
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* @access private
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* @since 3.0.0
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* @access private
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*/
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function wp_set_lang_dir() {
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if ( !defined( 'WP_LANG_DIR' ) ) {
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if ( file_exists( WP_CONTENT_DIR . '/languages' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) || !@is_dir(ABSPATH . WPINC . '/languages') ) {
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define( 'WP_LANG_DIR', WP_CONTENT_DIR . '/languages' ); // no leading slash, no trailing slash, full path, not relative to ABSPATH
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/**
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* Server path of the language directory.
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*
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* No leading slash, no trailing slash, full path, not relative to ABSPATH
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*
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* @since 2.1.0
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*/
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define( 'WP_LANG_DIR', WP_CONTENT_DIR . '/languages' );
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if ( !defined( 'LANGDIR' ) ) {
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// Old static relative path maintained for limited backwards compatibility - won't work in some cases
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define( 'LANGDIR', 'wp-content/languages' );
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}
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} else {
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define( 'WP_LANG_DIR', ABSPATH . WPINC . '/languages' ); // no leading slash, no trailing slash, full path, not relative to ABSPATH
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/**
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* Server path of the language directory.
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*
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* No leading slash, no trailing slash, full path, not relative to `ABSPATH`.
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*
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* @since 2.1.0
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*/
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define( 'WP_LANG_DIR', ABSPATH . WPINC . '/languages' );
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if ( !defined( 'LANGDIR' ) ) {
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// Old relative path maintained for backwards compatibility
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define( 'LANGDIR', WPINC . '/languages' );
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@ -305,14 +333,11 @@ function wp_set_lang_dir() {
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}
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/**
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* Load the correct database class file.
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*
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* This function is used to load the database class file either at runtime or by
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* wp-admin/setup-config.php. We must globalize $wpdb to ensure that it is
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* defined globally by the inline code in wp-db.php.
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* Load the database class file and instantiate the `$wpdb` global.
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*
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* @since 2.5.0
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* @global $wpdb WordPress Database Object
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*
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* @global wpdb $wpdb The WordPress database class.
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*/
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function require_wp_db() {
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global $wpdb;
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@ -328,18 +353,16 @@ function require_wp_db() {
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}
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/**
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* Sets the database table prefix and the format specifiers for database table columns.
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* Set the database table prefix and the format specifiers for database
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* table columns.
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*
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* Columns not listed here default to %s.
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* Columns not listed here default to `%s`.
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*
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* @see wpdb::$field_types Since 2.8.0
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* @see wpdb::prepare()
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* @see wpdb::insert()
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* @see wpdb::update()
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* @see wpdb::set_prefix()
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*
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* @access private
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* @since 3.0.0
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* @access private
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*
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* @global wpdb $wpdb The WordPress database class.
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* @global string $table_prefix The database table prefix.
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*/
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function wp_set_wpdb_vars() {
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global $wpdb, $table_prefix;
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@ -363,14 +386,15 @@ function wp_set_wpdb_vars() {
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}
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/**
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* Access/Modify private global variable $_wp_using_ext_object_cache
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* Access/Modify private global variable `$_wp_using_ext_object_cache`.
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*
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* Toggle $_wp_using_ext_object_cache on and off without directly touching global
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* Toggle `$_wp_using_ext_object_cache` on and off without directly
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* touching global.
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*
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* @since 3.7.0
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*
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* @param bool $using Whether external object cache is being used
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* @return bool The current 'using' setting
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* @param bool $using Whether external object cache is being used.
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* @return bool The current 'using' setting.
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*/
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function wp_using_ext_object_cache( $using = null ) {
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global $_wp_using_ext_object_cache;
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@ -381,13 +405,15 @@ function wp_using_ext_object_cache( $using = null ) {
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}
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/**
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* Starts the WordPress object cache.
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* Start the WordPress object cache.
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*
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* If an object-cache.php file exists in the wp-content directory,
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* it uses that drop-in as an external object cache.
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*
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* @access private
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* @since 3.0.0
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* @access private
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*
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* @global int $blog_id Blog ID.
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*/
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function wp_start_object_cache() {
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global $blog_id;
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@ -402,18 +428,23 @@ function wp_start_object_cache() {
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$first_init = true;
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} else if ( ! wp_using_ext_object_cache() && file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) {
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// Sometimes advanced-cache.php can load object-cache.php before it is loaded here.
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// This breaks the function_exists check above and can result in $_wp_using_ext_object_cache
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// being set incorrectly. Double check if an external cache exists.
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/*
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* Sometimes advanced-cache.php can load object-cache.php before
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* it is loaded here. This breaks the function_exists check above
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* and can result in `$_wp_using_ext_object_cache` being set
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* incorrectly. Double check if an external cache exists.
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*/
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wp_using_ext_object_cache( true );
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}
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if ( ! wp_using_ext_object_cache() )
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require_once ( ABSPATH . WPINC . '/cache.php' );
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// If cache supports reset, reset instead of init if already initialized.
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// Reset signals to the cache that global IDs have changed and it may need to update keys
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// and cleanup caches.
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/*
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* If cache supports reset, reset instead of init if already
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* initialized. Reset signals to the cache that global IDs
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* have changed and it may need to update keys and cleanup caches.
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*/
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if ( ! $first_init && function_exists( 'wp_cache_switch_to_blog' ) )
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wp_cache_switch_to_blog( $blog_id );
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elseif ( function_exists( 'wp_cache_init' ) )
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@ -426,12 +457,12 @@ function wp_start_object_cache() {
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}
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/**
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* Redirects to the installer if WordPress is not installed.
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* Redirect to the installer if WordPress is not installed.
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*
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* Dies with an error message when multisite is enabled.
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* Dies with an error message when Multisite is enabled.
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*
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* @access private
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* @since 3.0.0
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* @access private
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*/
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function wp_not_installed() {
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if ( is_multisite() ) {
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@ -450,15 +481,16 @@ function wp_not_installed() {
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}
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/**
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* Returns array of must-use plugin files to be included in global scope.
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* Retrieve an array of must-use plugin files.
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*
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* The default directory is wp-content/mu-plugins. To change the default directory
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* manually, define <code>WPMU_PLUGIN_DIR</code> and <code>WPMU_PLUGIN_URL</code>
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* The default directory is wp-content/mu-plugins. To change the default
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* directory manually, define `WPMU_PLUGIN_DIR` and `WPMU_PLUGIN_URL`
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* in wp-config.php.
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*
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* @access private
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* @since 3.0.0
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* @return array Files to include
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* @access private
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*
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* @return array Files to include.
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*/
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function wp_get_mu_plugins() {
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$mu_plugins = array();
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@ -477,15 +509,18 @@ function wp_get_mu_plugins() {
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}
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/**
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* Returns array of plugin files to be included in global scope.
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* Retrieve an array of active and valid plugin files.
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*
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* The default directory is wp-content/plugins. To change the default directory
|
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* manually, define <code>WP_PLUGIN_DIR</code> and <code>WP_PLUGIN_URL</code>
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* While upgrading or installing WordPress, no plugins are returned.
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*
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* The default directory is wp-content/plugins. To change the default
|
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* directory manually, define `WP_PLUGIN_DIR` and `WP_PLUGIN_URL`
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* in wp-config.php.
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*
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* @access private
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* @since 3.0.0
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* @return array Files to include
|
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* @access private
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*
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* @return array Files.
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*/
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function wp_get_active_and_valid_plugins() {
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$plugins = array();
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@ -515,13 +550,13 @@ function wp_get_active_and_valid_plugins() {
|
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}
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/**
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* Sets internal encoding using mb_internal_encoding().
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* Set internal encoding.
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*
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* In most cases the default internal encoding is latin1, which is of no use,
|
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* since we want to use the mb_ functions for utf-8 strings.
|
||||
* In most cases the default internal encoding is latin1, which is
|
||||
* of no use, since we want to use the `mb_` functions for `utf-8` strings.
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*
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||||
* @access private
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||||
* @since 3.0.0
|
||||
* @access private
|
||||
*/
|
||||
function wp_set_internal_encoding() {
|
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if ( function_exists( 'mb_internal_encoding' ) ) {
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|
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@ -532,13 +567,13 @@ function wp_set_internal_encoding() {
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}
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/**
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* Add magic quotes to $_GET, $_POST, $_COOKIE, and $_SERVER.
|
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* Add magic quotes to `$_GET`, `$_POST`, `$_COOKIE`, and `$_SERVER`.
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*
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* Also forces $_REQUEST to be $_GET + $_POST. If $_SERVER, $_COOKIE,
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* or $_ENV are needed, use those superglobals directly.
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* Also forces `$_REQUEST` to be `$_GET + $_POST`. If `$_SERVER`,
|
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* `$_COOKIE`, or `$_ENV` are needed, use those superglobals directly.
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*
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* @access private
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* @since 3.0.0
|
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* @access private
|
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*/
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function wp_magic_quotes() {
|
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// If already slashed, strip.
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|
|
@ -561,8 +596,8 @@ function wp_magic_quotes() {
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/**
|
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* Runs just before PHP shuts down execution.
|
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*
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* @access private
|
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* @since 1.2.0
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||||
* @access private
|
||||
*/
|
||||
function shutdown_action_hook() {
|
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/**
|
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|
|
@ -571,6 +606,7 @@ function shutdown_action_hook() {
|
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* @since 1.2.0
|
||||
*/
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||||
do_action( 'shutdown' );
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||||
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||||
wp_cache_close();
|
||||
}
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||||
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||||
|
|
@ -578,26 +614,25 @@ function shutdown_action_hook() {
|
|||
* Copy an object.
|
||||
*
|
||||
* @since 2.7.0
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||||
* @deprecated 3.2
|
||||
* @deprecated 3.2.0
|
||||
*
|
||||
* @param object $object The object to clone
|
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* @return object The cloned object
|
||||
* @param object $object The object to clone.
|
||||
* @return object The cloned object.
|
||||
*/
|
||||
|
||||
function wp_clone( $object ) {
|
||||
// Use parens for clone to accommodate PHP 4. See #17880
|
||||
return clone( $object );
|
||||
}
|
||||
|
||||
/**
|
||||
* Whether the current request is for a network or blog admin page
|
||||
* Whether the current request is for an administrative interface page.
|
||||
*
|
||||
* Does not inform on whether the user is an admin! Use capability checks to
|
||||
* tell if the user should be accessing a section or not.
|
||||
* Does not check if the user is an administrator; {@see current_user_can()}
|
||||
* for checking roles and capabilities.
|
||||
*
|
||||
* @since 1.5.1
|
||||
*
|
||||
* @return bool True if inside WordPress administration pages.
|
||||
* @return bool True if inside WordPress administration interface, false otherwise.
|
||||
*/
|
||||
function is_admin() {
|
||||
if ( isset( $GLOBALS['current_screen'] ) )
|
||||
|
|
@ -609,14 +644,16 @@ function is_admin() {
|
|||
}
|
||||
|
||||
/**
|
||||
* Whether the current request is for a blog admin screen /wp-admin/
|
||||
* Whether the current request is for a site's admininstrative interface.
|
||||
*
|
||||
* Does not inform on whether the user is a blog admin! Use capability checks to
|
||||
* tell if the user should be accessing a section or not.
|
||||
* e.g. `/wp-admin/`
|
||||
*
|
||||
* Does not check if the user is an administrator; {@see current_user_can()}
|
||||
* for checking roles and capabilities.
|
||||
*
|
||||
* @since 3.1.0
|
||||
*
|
||||
* @return bool True if inside WordPress network administration pages.
|
||||
* @return bool True if inside WordPress blog administration pages.
|
||||
*/
|
||||
function is_blog_admin() {
|
||||
if ( isset( $GLOBALS['current_screen'] ) )
|
||||
|
|
@ -628,10 +665,12 @@ function is_blog_admin() {
|
|||
}
|
||||
|
||||
/**
|
||||
* Whether the current request is for a network admin screen /wp-admin/network/
|
||||
* Whether the current request is for the network administrative interface.
|
||||
*
|
||||
* Does not inform on whether the user is a network admin! Use capability checks to
|
||||
* tell if the user should be accessing a section or not.
|
||||
* e.g. `/wp-admin/network/`
|
||||
*
|
||||
* Does not check if the user is an administrator; {@see current_user_can()}
|
||||
* for checking roles and capabilities.
|
||||
*
|
||||
* @since 3.1.0
|
||||
*
|
||||
|
|
@ -647,10 +686,13 @@ function is_network_admin() {
|
|||
}
|
||||
|
||||
/**
|
||||
* Whether the current request is for a user admin screen /wp-admin/user/
|
||||
* Whether the current request is for a user admin screen.
|
||||
*
|
||||
* Does not inform on whether the user is an admin! Use capability checks to
|
||||
* tell if the user should be accessing a section or not.
|
||||
* e.g. `/wp-admin/user/`
|
||||
*
|
||||
* Does not inform on whether the user is an admin! Use capability
|
||||
* checks to tell if the user should be accessing a section or not
|
||||
* {@see current_user_can()}.
|
||||
*
|
||||
* @since 3.1.0
|
||||
*
|
||||
|
|
@ -666,11 +708,11 @@ function is_user_admin() {
|
|||
}
|
||||
|
||||
/**
|
||||
* Whether Multisite support is enabled
|
||||
* If Multisite is enabled.
|
||||
*
|
||||
* @since 3.0.0
|
||||
*
|
||||
* @return bool True if multisite is enabled, false otherwise.
|
||||
* @return bool True if Multisite is enabled, false otherwise.
|
||||
*/
|
||||
function is_multisite() {
|
||||
if ( defined( 'MULTISITE' ) )
|
||||
|
|
@ -683,7 +725,7 @@ function is_multisite() {
|
|||
}
|
||||
|
||||
/**
|
||||
* Retrieve the current blog id
|
||||
* Retrieve the current blog ID.
|
||||
*
|
||||
* @since 3.1.0
|
||||
*
|
||||
|
|
@ -695,16 +737,19 @@ function get_current_blog_id() {
|
|||
}
|
||||
|
||||
/**
|
||||
* Attempts an early load of translations.
|
||||
* Attempt an early load of translations.
|
||||
*
|
||||
* Used for errors encountered during the initial loading process, before the locale has been
|
||||
* properly detected and loaded.
|
||||
* Used for errors encountered during the initial loading process, before
|
||||
* the locale has been properly detected and loaded.
|
||||
*
|
||||
* Designed for unusual load sequences (like setup-config.php) or for when the script will then
|
||||
* terminate with an error, otherwise there is a risk that a file can be double-included.
|
||||
* Designed for unusual load sequences (like setup-config.php) or for when
|
||||
* the script will then terminate with an error, otherwise there is a risk
|
||||
* that a file can be double-included.
|
||||
*
|
||||
* @since 3.4.0
|
||||
* @access private
|
||||
*
|
||||
* @global $wp_locale The WordPress date and time locale object.
|
||||
*/
|
||||
function wp_load_translations_early() {
|
||||
global $text_direction, $wp_locale;
|
||||
|
|
|
|||
Loading…
Reference in New Issue