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WP 4.0++

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nikolark committed 2014-09-08 22:18:43 +02:00
1 parent ff5eca21d2
commit 03777ef2b0
578 files changed
+36396 -19889
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wp-includes/plugin.php
+151 -106
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@@ -35,7 +35,7 @@ if ( ! isset( $wp_current_filter ) )
$wp_current_filter = array();
/**
* Hooks a function or method to a specific filter action.
* Hook a function or method to a specific filter action.
*
* WordPress offers filter hooks to allow plugins to modify
* various types of internal data at runtime.
@@ -63,17 +63,20 @@ if ( ! isset( $wp_current_filter ) )
* is valid. It is up to you to take care. This is done for optimization purposes,
* so everything is as quick as possible.
*
* @global array $wp_filter A multidimensional array of all hooks and the callbacks hooked to them.
* @global array $merged_filters Tracks the tags that need to be merged for later. If the hook is added, it doesn't need to run through that process.
*
* @since 0.71
*
* @global array $wp_filter A multidimensional array of all hooks and the callbacks hooked to them.
* @global array $merged_filters Tracks the tags that need to be merged for later. If the hook is added,
* it doesn't need to run through that process.
*
* @param string $tag The name of the filter to hook the $function_to_add callback to.
* @param callback $function_to_add The callback to be run when the filter is applied.
* @param int $priority (optional) The order in which the functions associated with a particular action are executed. Lower numbers correspond with earlier execution, and functions with the same priority are executed in the order in which they were added to the action.
* Default 10.
* @param int $accepted_args (optional) The number of arguments the function accepts.
* Default 1.
* @param int $priority Optional. Used to specify the order in which the functions
* associated with a particular action are executed. Default 10.
* Lower numbers correspond with earlier execution,
* and functions with the same priority are executed
* in the order in which they were added to the action.
* @param int $accepted_args Optional. The number of arguments the function accepts. Default 1.
* @return boolean true
*/
function add_filter( $tag, $function_to_add, $priority = 10, $accepted_args = 1 ) {
@@ -90,19 +93,38 @@ function add_filter( $tag, $function_to_add, $priority = 10, $accepted_args = 1
*
* @since 2.5.0
*
* @global array $wp_filter Stores all of the filters
* @global array $wp_filter Stores all of the filters.
*
* @param string $tag The name of the filter hook.
* @param callback $function_to_check optional.
* @return mixed If $function_to_check is omitted, returns boolean for whether the hook has anything registered.
* When checking a specific function, the priority of that hook is returned, or false if the function is not attached.
* When using the $function_to_check argument, this function may return a non-boolean value that evaluates to false
* (e.g.) 0, so use the === operator for testing the return value.
* @param string $tag The name of the filter hook.
* @param callback|bool $function_to_check Optional. The callback to check for. Default false.
* @return bool|int If $function_to_check is omitted, returns boolean for whether the hook has
* anything registered. When checking a specific function, the priority of that
* hook is returned, or false if the function is not attached. When using the
* $function_to_check argument, this function may return a non-boolean value
* that evaluates to false (e.g.) 0, so use the === operator for testing the
* return value.
*/
function has_filter($tag, $function_to_check = false) {
global $wp_filter;
// Don't reset the internal array pointer
$wp_filter = $GLOBALS['wp_filter'];
$has = ! empty( $wp_filter[ $tag ] );
// Make sure at least one priority has a filter callback
if ( $has ) {
$exists = false;
foreach ( $wp_filter[ $tag ] as $callbacks ) {
if ( ! empty( $callbacks ) ) {
$exists = true;
break;
}
}
if ( ! $exists ) {
$has = false;
}
}
$has = !empty($wp_filter[$tag]);
if ( false === $function_to_check || false == $has )
return $has;
@@ -142,15 +164,15 @@ function has_filter($tag, $function_to_check = false) {
* $value = apply_filters( 'example_filter', 'filter me', $arg1, $arg2 );
* </code>
*
* @global array $wp_filter Stores all of the filters
* @global array $merged_filters Merges the filter hooks using this function.
* @global array $wp_current_filter stores the list of current filters with the current one last
*
* @since 0.71
*
* @param string $tag The name of the filter hook.
* @param mixed $value The value on which the filters hooked to <tt>$tag</tt> are applied on.
* @param mixed $var Additional variables passed to the functions hooked to <tt>$tag</tt>.
* @global array $wp_filter Stores all of the filters.
* @global array $merged_filters Merges the filter hooks using this function.
* @global array $wp_current_filter Stores the list of current filters with the current one last.
*
* @param string $tag The name of the filter hook.
* @param mixed $value The value on which the filters hooked to <tt>$tag</tt> are applied on.
* @param mixed $var Additional variables passed to the functions hooked to <tt>$tag</tt>.
* @return mixed The filtered value after all hooked functions are applied to it.
*/
function apply_filters( $tag, $value ) {
@@ -158,7 +180,7 @@ function apply_filters( $tag, $value ) {
$args = array();
// Do 'all' actions first
// Do 'all' actions first.
if ( isset($wp_filter['all']) ) {
$wp_current_filter[] = $tag;
$args = func_get_args();
@@ -174,7 +196,7 @@ function apply_filters( $tag, $value ) {
if ( !isset($wp_filter['all']) )
$wp_current_filter[] = $tag;
// Sort
// Sort.
if ( !isset( $merged_filters[ $tag ] ) ) {
ksort($wp_filter[$tag]);
$merged_filters[ $tag ] = true;
@@ -206,12 +228,13 @@ function apply_filters( $tag, $value ) {
* functions hooked to <tt>$tag</tt> are supplied using an array.
*
* @since 3.0.0
* @global array $wp_filter Stores all of the filters
* @global array $merged_filters Merges the filter hooks using this function.
* @global array $wp_current_filter stores the list of current filters with the current one last
*
* @param string $tag The name of the filter hook.
* @param array $args The arguments supplied to the functions hooked to <tt>$tag</tt>
* @global array $wp_filter Stores all of the filters
* @global array $merged_filters Merges the filter hooks using this function.
* @global array $wp_current_filter Stores the list of current filters with the current one last
*
* @param string $tag The name of the filter hook.
* @param array $args The arguments supplied to the functions hooked to $tag.
* @return mixed The filtered value after all hooked functions are applied to it.
*/
function apply_filters_ref_array($tag, $args) {
@@ -266,22 +289,25 @@ function apply_filters_ref_array($tag, $args) {
*
* @since 1.2.0
*
* @param string $tag The filter hook to which the function to be removed is hooked.
* @param string $tag The filter hook to which the function to be removed is hooked.
* @param callback $function_to_remove The name of the function which should be removed.
* @param int $priority optional. The priority of the function (default: 10).
* @param int $accepted_args optional. The number of arguments the function accepts (default: 1).
* @param int $priority Optional. The priority of the function. Default 10.
* @return boolean Whether the function existed before it was removed.
*/
function remove_filter( $tag, $function_to_remove, $priority = 10 ) {
$function_to_remove = _wp_filter_build_unique_id($tag, $function_to_remove, $priority);
$function_to_remove = _wp_filter_build_unique_id( $tag, $function_to_remove, $priority );
$r = isset($GLOBALS['wp_filter'][$tag][$priority][$function_to_remove]);
$r = isset( $GLOBALS['wp_filter'][ $tag ][ $priority ][ $function_to_remove ] );
if ( true === $r) {
unset($GLOBALS['wp_filter'][$tag][$priority][$function_to_remove]);
if ( empty($GLOBALS['wp_filter'][$tag][$priority]) )
unset($GLOBALS['wp_filter'][$tag][$priority]);
unset($GLOBALS['merged_filters'][$tag]);
if ( true === $r ) {
unset( $GLOBALS['wp_filter'][ $tag ][ $priority ][ $function_to_remove ] );
if ( empty( $GLOBALS['wp_filter'][ $tag ][ $priority ] ) ) {
unset( $GLOBALS['wp_filter'][ $tag ][ $priority ] );
}
if ( empty( $GLOBALS['wp_filter'][ $tag ] ) ) {
$GLOBALS['wp_filter'][ $tag ] = array();
}
unset( $GLOBALS['merged_filters'][ $tag ] );
}
return $r;
@@ -292,22 +318,24 @@ function remove_filter( $tag, $function_to_remove, $priority = 10 ) {
*
* @since 2.7.0
*
* @param string $tag The filter to remove hooks from.
* @param int $priority The priority number to remove.
* @param string $tag The filter to remove hooks from.
* @param int|bool $priority Optional. The priority number to remove. Default false.
* @return bool True when finished.
*/
function remove_all_filters($tag, $priority = false) {
function remove_all_filters( $tag, $priority = false ) {
global $wp_filter, $merged_filters;
if( isset($wp_filter[$tag]) ) {
if( false !== $priority && isset($wp_filter[$tag][$priority]) )
unset($wp_filter[$tag][$priority]);
else
unset($wp_filter[$tag]);
if ( isset( $wp_filter[ $tag ]) ) {
if ( false !== $priority && isset( $wp_filter[ $tag ][ $priority ] ) ) {
$wp_filter[ $tag ][ $priority ] = array();
} else {
$wp_filter[ $tag ] = array();
}
}
if( isset($merged_filters[$tag]) )
unset($merged_filters[$tag]);
if ( isset( $merged_filters[ $tag ] ) ) {
unset( $merged_filters[ $tag ] );
}
return true;
}
@@ -342,7 +370,9 @@ function current_action() {
*
* The function current_filter() only returns the most recent filter or action
* being executed. did_action() returns true once the action is initially
* processed. This function allows detection for any filter currently being
* processed.
*
* This function allows detection for any filter currently being
* executed (despite not being the most recent filter to fire, in the case of
* hooks called from hook callbacks) to be verified.
*
@@ -354,7 +384,7 @@ function current_action() {
*
* @param null|string $filter Optional. Filter to check. Defaults to null, which
* checks if any filter is currently being run.
* @return bool Whether the filter is currently in the stack
* @return bool Whether the filter is currently in the stack.
*/
function doing_filter( $filter = null ) {
global $wp_current_filter;
@@ -389,14 +419,19 @@ function doing_action( $action = null ) {
* one or more of its PHP functions are executed at these points, using the
* Action API.
*
* @uses add_filter() Adds an action. Parameter list and functionality are the same.
*
* @since 1.2.0
*
* @param string $tag The name of the action to which the $function_to_add is hooked.
* @uses add_filter() Adds an action. Parameter list and functionality are the same.
*
* @param string $tag The name of the action to which the $function_to_add is hooked.
* @param callback $function_to_add The name of the function you wish to be called.
* @param int $priority optional. Used to specify the order in which the functions associated with a particular action are executed (default: 10). Lower numbers correspond with earlier execution, and functions with the same priority are executed in the order in which they were added to the action.
* @param int $accepted_args optional. The number of arguments the function accept (default 1).
* @param int $priority Optional. Used to specify the order in which the functions
* associated with a particular action are executed. Default 10.
* Lower numbers correspond with earlier execution,
* and functions with the same priority are executed
* in the order in which they were added to the action.
* @param int $accepted_args Optional. The number of arguments the function accept. Default 1.
* @return bool Will always return true.
*/
function add_action($tag, $function_to_add, $priority = 10, $accepted_args = 1) {
return add_filter($tag, $function_to_add, $priority, $accepted_args);
@@ -412,17 +447,17 @@ function add_action($tag, $function_to_add, $priority = 10, $accepted_args = 1)
* You can pass extra arguments to the hooks, much like you can with
* apply_filters().
*
* @see apply_filters() This function works similar with the exception that
* nothing is returned and only the functions or methods are called.
*
* @since 1.2.0
*
* @global array $wp_filter Stores all of the filters
* @see apply_filters() This function works similar with the exception that nothing
* is returned and only the functions or methods are called.
* @global array $wp_filter Stores all of the filters
* @global array $wp_actions Increments the amount of times action was triggered.
*
* @param string $tag The name of the action to be executed.
* @param mixed $arg,... Optional additional arguments which are passed on to the functions hooked to the action.
* @return null Will return null if $tag does not exist in $wp_filter array
* @param mixed $arg Optional. Additional arguments which are passed on to the
* functions hooked to the action. Default empty.
* @return null Will return null if $tag does not exist in $wp_filter array.
*/
function do_action($tag, $arg = '') {
global $wp_filter, $wp_actions, $merged_filters, $wp_current_filter;
@@ -482,7 +517,7 @@ function do_action($tag, $arg = '') {
* @global array $wp_actions Increments the amount of times action was triggered.
*
* @param string $tag The name of the action hook.
* @return int The number of times action hook <tt>$tag</tt> is fired
* @return int The number of times action hook $tag is fired.
*/
function did_action($tag) {
global $wp_actions;
@@ -496,16 +531,15 @@ function did_action($tag) {
/**
* Execute functions hooked on a specific action hook, specifying arguments in an array.
*
* @see do_action() This function is identical, but the arguments passed to the
* functions hooked to <tt>$tag</tt> are supplied using an array.
*
* @since 2.1.0
*
* @global array $wp_filter Stores all of the filters
* @see do_action() This function is identical, but the arguments passed to the
* functions hooked to $tag< are supplied using an array.
* @global array $wp_filter Stores all of the filters
* @global array $wp_actions Increments the amount of times action was triggered.
*
* @param string $tag The name of the action to be executed.
* @param array $args The arguments supplied to the functions hooked to <tt>$tag</tt>
* @param string $tag The name of the action to be executed.
* @param array $args The arguments supplied to the functions hooked to <tt>$tag</tt>
* @return null Will return null if $tag does not exist in $wp_filter array
*/
function do_action_ref_array($tag, $args) {
@@ -557,12 +591,14 @@ function do_action_ref_array($tag, $args) {
*
* @see has_filter() has_action() is an alias of has_filter().
*
* @param string $tag The name of the action hook.
* @param callback $function_to_check optional.
* @return mixed If $function_to_check is omitted, returns boolean for whether the hook has anything registered.
* When checking a specific function, the priority of that hook is returned, or false if the function is not attached.
* When using the $function_to_check argument, this function may return a non-boolean value that evaluates to false
* (e.g.) 0, so use the === operator for testing the return value.
* @param string $tag The name of the action hook.
* @param callback|bool $function_to_check Optional. The callback to check for. Default false.
* @return bool|int If $function_to_check is omitted, returns boolean for whether the hook has
* anything registered. When checking a specific function, the priority of that
* hook is returned, or false if the function is not attached. When using the
* $function_to_check argument, this function may return a non-boolean value
* that evaluates to false (e.g.) 0, so use the === operator for testing the
* return value.
*/
function has_action($tag, $function_to_check = false) {
return has_filter($tag, $function_to_check);
@@ -577,9 +613,9 @@ function has_action($tag, $function_to_check = false) {
*
* @since 1.2.0
*
* @param string $tag The action hook to which the function to be removed is hooked.
* @param string $tag The action hook to which the function to be removed is hooked.
* @param callback $function_to_remove The name of the function which should be removed.
* @param int $priority optional The priority of the function (default: 10).
* @param int $priority Optional. The priority of the function. Default 10.
* @return boolean Whether the function is removed.
*/
function remove_action( $tag, $function_to_remove, $priority = 10 ) {
@@ -591,8 +627,8 @@ function remove_action( $tag, $function_to_remove, $priority = 10 ) {
*
* @since 2.7.0
*
* @param string $tag The action to remove hooks from.
* @param int $priority The priority number to remove them from.
* @param string $tag The action to remove hooks from.
* @param int|bool $priority The priority number to remove them from. Default false.
* @return bool True when finished.
*/
function remove_all_actions($tag, $priority = false) {
@@ -610,11 +646,10 @@ function remove_all_actions($tag, $priority = false) {
*
* @since 1.5.0
*
* @access private
* @uses WP_PLUGIN_DIR, WPMU_PLUGIN_DIR
*
* @param string $file The filename of plugin.
* @return string The name of a plugin.
* @uses WP_PLUGIN_DIR
*/
function plugin_basename( $file ) {
global $wp_plugin_paths;
@@ -671,24 +706,24 @@ function wp_register_plugin_realpath( $file ) {
}
/**
* Gets the filesystem directory path (with trailing slash) for the plugin __FILE__ passed in
* Get the filesystem directory path (with trailing slash) for the plugin __FILE__ passed in.
*
* @since 2.8.0
*
* @param string $file The filename of the plugin (__FILE__)
* @return string the filesystem path of the directory that contains the plugin
* @param string $file The filename of the plugin (__FILE__).
* @return string the filesystem path of the directory that contains the plugin.
*/
function plugin_dir_path( $file ) {
return trailingslashit( dirname( $file ) );
}
/**
* Gets the URL directory path (with trailing slash) for the plugin __FILE__ passed in
* Get the URL directory path (with trailing slash) for the plugin __FILE__ passed in.
*
* @since 2.8.0
*
* @param string $file The filename of the plugin (__FILE__)
* @return string the URL path of the directory that contains the plugin
* @param string $file The filename of the plugin (__FILE__).
* @return string the URL path of the directory that contains the plugin.
*/
function plugin_dir_url( $file ) {
return trailingslashit( plugins_url( '', $file ) );
@@ -709,8 +744,8 @@ function plugin_dir_url( $file ) {
*
* @since 2.0.0
*
* @param string $file The filename of the plugin including the path.
* @param callback $function the function hooked to the 'activate_PLUGIN' action.
* @param string $file The filename of the plugin including the path.
* @param callback $function The function hooked to the 'activate_PLUGIN' action.
*/
function register_activation_hook($file, $function) {
$file = plugin_basename($file);
@@ -732,8 +767,8 @@ function register_activation_hook($file, $function) {
*
* @since 2.0.0
*
* @param string $file The filename of the plugin including the path.
* @param callback $function the function hooked to the 'deactivate_PLUGIN' action.
* @param string $file The filename of the plugin including the path.
* @param callback $function The function hooked to the 'deactivate_PLUGIN' action.
*/
function register_deactivation_hook($file, $function) {
$file = plugin_basename($file);
@@ -762,8 +797,9 @@ function register_deactivation_hook($file, $function) {
*
* @since 2.7.0
*
* @param string $file
* @param callback $callback The callback to run when the hook is called. Must be a static method or function.
* @param string $file Plugin file.
* @param callback $callback The callback to run when the hook is called. Must be
* a static method or function.
*/
function register_uninstall_hook( $file, $callback ) {
if ( is_array( $callback ) && is_object( $callback[0] ) ) {
@@ -771,16 +807,19 @@ function register_uninstall_hook( $file, $callback ) {
return;
}
// The option should not be autoloaded, because it is not needed in most
// cases. Emphasis should be put on using the 'uninstall.php' way of
// uninstalling the plugin.
/*
* The option should not be autoloaded, because it is not needed in most
* cases. Emphasis should be put on using the 'uninstall.php' way of
* uninstalling the plugin.
*/
$uninstallable_plugins = (array) get_option('uninstall_plugins');
$uninstallable_plugins[plugin_basename($file)] = $callback;
update_option('uninstall_plugins', $uninstallable_plugins);
}
/**
* Calls the 'all' hook, which will process the functions hooked into it.
* Call the 'all' hook, which will process the functions hooked into it.
*
* The 'all' hook passes all of the arguments or parameters that were used for
* the hook, which this function was called for.
@@ -793,7 +832,7 @@ function register_uninstall_hook( $file, $callback ) {
* @since 2.5.0
* @access private
*
* @uses $wp_filter Used to process all of the functions in the 'all' hook
* @uses $wp_filter Used to process all of the functions in the 'all' hook.
*
* @param array $args The collected parameters from the hook that was called.
*/
@@ -826,15 +865,21 @@ function _wp_call_all_hook($args) {
* Functions and static method callbacks are just returned as strings and
* shouldn't have any speed penalty.
*
* @access private
* @since 2.2.3
* @link http://trac.wordpress.org/ticket/3875
*
* @global array $wp_filter Storage for all of the filters and actions
* @param string $tag Used in counting how many hooks were applied
* @since 2.2.3
* @access private
*
* @global array $wp_filter Storage for all of the filters and actions.
*
* @param string $tag Used in counting how many hooks were applied
* @param callback $function Used for creating unique id
* @param int|bool $priority Used in counting how many hooks were applied. If === false and $function is an object reference, we return the unique id only if it already has one, false otherwise.
* @return string|bool Unique ID for usage as array key or false if $priority === false and $function is an object reference, and it does not already have a unique id.
* @param int|bool $priority Used in counting how many hooks were applied. If === false
* and $function is an object reference, we return the unique
* id only if it already has one, false otherwise.
* @return string|bool Unique ID for usage as array key or false if $priority === false
* and $function is an object reference, and it does not already have
* a unique id.
*/
function _wp_filter_build_unique_id($tag, $function, $priority) {
global $wp_filter;