wp_register_style( string $handle, string|false $src, string[] $deps = array(), string|bool|null $ver = false, string $media = 'all' ): bool

Registers a CSS stylesheet.


Description

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See also


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Parameters

$handle string Required
Name of the stylesheet. Should be unique.
$src string|false Required
Full URL of the stylesheet, or path of the stylesheet relative to the WordPress root directory.
If source is set to false, stylesheet is an alias of other stylesheets it depends on.
$deps string[] Optional
An array of registered stylesheet handles this stylesheet depends on.

Default: array()

$ver string|bool|null Optional
String specifying stylesheet 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

$media string Optional
The media for which this stylesheet has been defined.
Default 'all'. Accepts media types like 'all', 'print' and 'screen', or media queries like '(orientation: portrait)' and '(max-width: 640px)'.

Default: 'all'


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Return

bool Whether the style has been registered. True on success, false on failure.


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Source

File: wp-includes/functions.wp-styles.php. View all references

function wp_register_style( $handle, $src, $deps = array(), $ver = false, $media = 'all' ) {
	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );

	return wp_styles()->add( $handle, $src, $deps, $ver, $media );
}


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Changelog

Changelog
Version Description
4.3.0 A return value was added.
2.6.0 Introduced.

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User Contributed Notes

  1. Skip to note 1 content
    Contributed by Ivan Shulev

    Examples
    In a Plugin (outside a PHP class)

    Assumes the Plugin directory is named ‘my-plugin’.
    Assumes the Plugin style sheet is named ‘plugin.css’.

    /**
     * Registers a stylesheet.
     */
    function wpdocs_register_plugin_styles() {
    	wp_register_style( 'my-plugin', plugins_url( 'my-plugin/css/plugin.css' ) );
    	wp_enqueue_style( 'my-plugin' );
    }
    // Register style sheet.
    add_action( 'wp_enqueue_scripts', 'wpdocs_register_plugin_styles' );
  2. Skip to note 2 content
    Contributed by Ivan Shulev

    Example
    In a plugin (inside a PHP class)

    Assumes the Plugin class name is ‘my_plugin’.
    Assumes the Plugin directory is named ‘my-plugin’.
    Assumes the Plugin style sheet is named ‘plugin.css’.

    class WPDocs_My_Plugin_Stylesheet {
    
    	/**
    	 * Constructor.
    	 */
    	function __construct() {
    		// Register stylesheet.
    		add_action( 'wp_enqueue_scripts', array( $this, 'register_plugin_styles' ) );
    	}
    
    	/**
    	 * Registers and enqueues stylesheet.
    	 */
    	public function register_plugin_styles() {
    		wp_register_style( 'my-plugin', plugins_url( 'my-plugin/css/plugin.css' ) );
    		wp_enqueue_style( 'my-plugin' );
    	}
    }
    new WPDocs_My_Plugin_Stylesheet();
  3. Skip to note 3 content
    Contributed by crstauf

    Note that Google Fonts has changed their URLs, so when embedding multiple font families only one will be loaded. The change is “fundamentally incompatible with how the rest of the world uses query variables and thus PHP itself”.

    The fix is to set null on the $version parameter, which prevents the URL from being parsed and the additional font families lost.

    Trac ticket: https://core.trac.wordpress.org/ticket/49742

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