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Description

_WP_Dependency is a class defined in wp-includes/class.wp-dependencies.php that holds information about an items in a WP_Dependencies queue. This class is internal to WP_Dependencies.

Args vs Extra

There are two different properties that hold additional information for an item: $args and $extra. The former is a scalar that holds registration data (data provided when the item was added to the dependency queue). For example, $args for WP_Styles holds the stylesheet media, whereas for WP_Scripts, it's a dependency group. $extra is an array that holds arbitrary data added via add_data(). For example, it can hold the title of a stylesheet or raw style rules.

Methods and Properties

Properties

$handle 

item identifier.

$src 

URL associated with item (in practice, items are web resources).

$deps 

handles of other items that this items depends on.

$ver = FALSE 

version for item

$args = NULL 

extra information provided when item was registered.

$extra 

Array of extra data.

Methods

bool add_data( $key, $value ) 

Adds extra data to an item.

bool all_deps( $handles, $recursion = false, $group = false ) 

Recursively builds an array of items to process while taking dependencies into account.

bool add( $handle, $src, $deps = array(), $ver = false, $args = null ) 

Registers an item if no item of that name already exists

string get_data( $handle, $key ) 

Gets data associated with a registered item

void remove ( $handles ) 

Unregister an item or items

Examples

Change Log

Since 2.6.

Source File

_WP_Dependency is located in wp-includes/class.wp-dependencies.php.