twentynineteen_setup()

Description

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 twentynineteen_setup() 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

Trivial

Touches nothing outside its own arguments.

Scaling

Constant

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

Instructions

191–207

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 213.

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

• hookthird-party callbacksapply_filters()one call below twentynineteen_setup()

Further down the call graph this can also reach option, cache, serialize, transient and query. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.

What one call costs · 16 distinct outcomes

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

Uses · 7

• add_theme_support()Registers theme support for a given feature.
• set_post_thumbnail_size()Registers an image size for the post thumbnail.
• register_nav_menus()Registers navigation menu locations for a theme.
• __()Retrieves the translation of $text.
• add_editor_style()Adds callback for custom TinyMCE editor stylesheets.
• get_theme_mod()Retrieves theme modification value for the active theme.
• twentynineteen_hsl_hex()Converts HSL to HEX or RGB colors.

Source code

View on Trac ↗View on GitHub ↗

30	function twentynineteen_setup() {31 32		// Add default posts and comments RSS feed links to head.33		add_theme_support( 'automatic-feed-links' );34 35		/*36		 * Let WordPress manage the document title.37		 * By adding theme support, we declare that this theme does not use a38		 * hard-coded <title> tag in the document head, and expect WordPress to39		 * provide it for us.40		 */41		add_theme_support( 'title-tag' );42 43		/*44		 * Enable support for Post Thumbnails on posts and pages.45		 *46		 * @link https://developer.wordpress.org/themes/functionality/featured-images-post-thumbnails/47		 */48		add_theme_support( 'post-thumbnails' );49		set_post_thumbnail_size( 1568, 9999 );50 51		// This theme uses wp_nav_menu() in two locations.52		register_nav_menus(53			array(54				'menu-1' => __( 'Primary', 'twentynineteen' ),55				'footer' => __( 'Footer Menu', 'twentynineteen' ),56				'social' => __( 'Social Links Menu', 'twentynineteen' ),57			)58		);59 60		/*61		 * Switch default core markup for search form, comment form, and comments62		 * to output valid HTML5.63		 */64		add_theme_support(65			'html5',66			array(67				'search-form',68				'comment-form',69				'comment-list',70				'gallery',71				'caption',72				'script',73				'style',74				'navigation-widgets',75			)76		);77 78		/**79		 * Add support for core custom logo.80		 *81		 * @link https://codex.wordpress.org/Theme_Logo82		 */83		add_theme_support(84			'custom-logo',85			array(86				'height'      => 190,87				'width'       => 190,88				'flex-width'  => false,89				'flex-height' => false,90			)91		);92 93		// Add theme support for selective refresh for widgets.94		add_theme_support( 'customize-selective-refresh-widgets' );95 96		// Add support for Block Styles.97		add_theme_support( 'wp-block-styles' );98 99		// Add support for full and wide align images.100		add_theme_support( 'align-wide' );101 102		// Add support for editor styles.103		add_theme_support( 'editor-styles' );104 105		// Enqueue editor styles.106		add_editor_style( 'style-editor.css' );107 108		// Add custom editor font sizes.109		add_theme_support(

Changelog

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/twentynineteen/functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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