wp_print_scripts( string|bool|array $handles = false )

Prints scripts in document head that are in the $handles queue.

Description Description

Called by admin-header.php and ‘wp_head’ hook. Since it is called by wp_head on every page load, the function does not instantiate the WP_Scripts object unless script names are explicitly passed. Makes use of already-instantiated $wp_scripts global if present. Use provided ‘wp_print_scripts’ hook to register/enqueue new scripts.

See also See also

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Parameters Parameters


(string|bool|array) (Optional) Scripts to be printed. Default 'false'.

Default value: false

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Return Return

(string[]) On success, an array of handles of processed WP_Dependencies items; otherwise, an empty array.

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Source Source

File: wp-includes/functions.wp-scripts.php

function wp_print_scripts( $handles = false ) {
	global $wp_scripts;

	 * Fires before scripts in the $handles queue are printed.
	 * @since 2.1.0
	do_action( 'wp_print_scripts' );

	if ( '' === $handles ) { // For 'wp_head'.
		$handles = false;

	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );

	if ( ! ( $wp_scripts instanceof WP_Scripts ) ) {
		if ( ! $handles ) {
			return array(); // No need to instantiate if nothing is there.

	return wp_scripts()->do_items( $handles );

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Changelog Changelog

Version Description
2.1.0 Introduced.

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