twentyfifteen_scripts()

Compatibility

Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.

Performance profile

How much work a call to twentyfifteen_scripts() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class

Heavy

Reaches the database via get_post().

Scaling

Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions

101–124

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 125.

Plugin surface

None

Nothing here hands control to plugin code.

Called by

0

Nothing in core calls this; the cost is only what you spend yourself.

What it touches

• optionoption read or writeget_option()called directly
• hookthird-party callbacksapply_filters()one call below twentyfifteen_scripts()
• querycontent queryget_post()one call below twentyfifteen_scripts()
• cacheobject cachewp_cache_get()one call below twentyfifteen_scripts()
• serializeserialisationmaybe_unserialize()one call below twentyfifteen_scripts()

Further down the call graph this can also reach transient. That is the worst case, several calls deep and usually down an error path, not what a normal call pays.

What one call costs · 12 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost twentyfifteen_scripts() can have, taken from its control-flow graph on PHP 8.5.

Uses · 13

• twentyfifteen_fonts_url()Registers fonts for Twenty Fifteen.
• get_template_directory_uri()Retrieves template directory URI for the active theme.
• wp_enqueue_style()Enqueues a CSS stylesheet.
• get_stylesheet_uri()Retrieves stylesheet URI for the active theme.
• wp_register_style()Registers a CSS stylesheet.
• wp_register_script()Registers a new script.
• is_singular()Determines whether the query is for an existing single post of any post type (post, attachment, page, custom post types).
• comments_open()Determines whether the current post is open for comments.
• get_option()Retrieves an option value based on an option name.
• wp_enqueue_script()Enqueues a script.
• wp_attachment_is_image()Determines whether an attachment is an image.
• wp_localize_script()Localizes a script.

Source code

View on Trac ↗View on GitHub ↗

435function twentyfifteen_scripts() {436	// Add custom fonts, used in the main stylesheet.437	$font_version = ( 0 === strpos( (string) twentyfifteen_fonts_url(), get_template_directory_uri() . '/' ) ) ? '20230328' : null;438	wp_enqueue_style( 'twentyfifteen-fonts', twentyfifteen_fonts_url(), array(), $font_version );439 440	// Add Genericons, used in the main stylesheet.441	wp_enqueue_style( 'genericons', get_template_directory_uri() . '/genericons/genericons.css', array(), '20251101' );442 443	// Load our main stylesheet.444	wp_enqueue_style( 'twentyfifteen-style', get_stylesheet_uri(), array(), '20260819' );445 446	// Theme block stylesheet.447	wp_enqueue_style( 'twentyfifteen-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentyfifteen-style' ), '20240715' );448 449	// Register handles for removed stylesheets and scripts.450	wp_register_style( 'twentyfifteen-ie', false, array( 'twentyfifteen-style' ) );451	wp_register_style( 'twentyfifteen-ie7', false, array( 'twentyfifteen-style' ) );452	wp_register_script( 'twentyfifteen-skip-link-focus-fix', get_template_directory_uri() . '/js/skip-link-focus-fix.js', array(), '20230526', array( 'in_footer' => true ) );453 454	if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {455		wp_enqueue_script( 'comment-reply' );456	}457 458	if ( is_singular() && wp_attachment_is_image() ) {459		wp_enqueue_script( 'twentyfifteen-keyboard-image-navigation', get_template_directory_uri() . '/js/keyboard-image-navigation.js', array( 'jquery' ), '20141210' );460	}461 462	wp_enqueue_script(463		'twentyfifteen-script',464		get_template_directory_uri() . '/js/functions.js',465		array( 'jquery' ),466		'20250729',467		array(468			'in_footer' => false, // Because involves header.469			'strategy'  => 'defer',470		)471	);472	wp_localize_script(473		'twentyfifteen-script',474		'screenReaderText',475		array(476			/* translators: Hidden accessibility text. */477			'expand'   => '<span class="screen-reader-text">' . __( 'expand child menu', 'twentyfifteen' ) . '</span>',478			/* translators: Hidden accessibility text. */479			'collapse' => '<span class="screen-reader-text">' . __( 'collapse child menu', 'twentyfifteen' ) . '</span>',480		)481	);482}

Changelog

Introduced in Twenty Fifteen 1.0. Unchanged from 6.7.7 through 7.1.0.

1. 6.7.7
2. 6.8.8
3. 6.9.7
4. 7.0.4
5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data

Generated from the wordpress-develop 7.1.0 tag, from src/wp-content/themes/twentyfifteen/functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

Something wrong on this page? Report it and it gets fixed in the next regeneration.