Register an item.

Description

Registers the item if no item of that name already exists.

Parameters

$handlestringrequired

Name of the item. Should be unique.

$srcstring|falserequired

Full URL of the item, or path of the item relative to the WordPress root directory. If source is set to false, the item is an alias of other items it depends on.

$depsstring[]optional

An array of registered item handles this item depends on.

Default:array()

$verstring|bool|nulloptional

String specifying item version number, if it has one, which is added to the URL as a query string for cache busting purposes.
If version is set to false, a version number is automatically added equal to current installed WordPress version.
If set to null, no version is added.

Default:false

$argsmixedoptional

Custom property of the item. NOT the class property $args.
Examples: $media, $in_footer.

Default:null

Return

Source

public function add( $handle, $src, $deps = array(), $ver = false, $args = null ) {
	if ( isset( $this->registered[ $handle ] ) ) {
		return false;
	}
	$this->registered[ $handle ] = new _WP_Dependency( $handle, $src, $deps, $ver, $args );

	// If the item was enqueued before the details were registered, enqueue it now.
	if ( array_key_exists( $handle, $this->queued_before_register ) ) {
		if ( ! is_null( $this->queued_before_register[ $handle ] ) ) {
			$this->enqueue( $handle . '?' . $this->queued_before_register[ $handle ] );
		} else {
			$this->enqueue( $handle );
		}

		unset( $this->queued_before_register[ $handle ] );
	}

	return true;
}

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