WP_Customize_Header_Image_Setting::update( mixed $value )

Compatibility

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

Parameters

$valuemixed

The value to update.

Performance profile

How much work a call to WP_Customize_Header_Image_Setting::update() 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 WP_Customize_Header_Image_Setting::update().

Scaling

Constant

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

Instructions

11–48

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 54.

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

• sqldatabase queryWP_Customize_Header_Image_Setting::update()this function does it

What one call costs · 4 distinct outcomes

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

Uses · 2

• get_theme_support()Gets the theme support arguments passed when registering that support.
• Custom_Image_Header::__construct()Constructor - Registers administration header callback.

Source code

View on Trac ↗View on GitHub ↗

36	public function update( $value ) {37		global $custom_image_header;38 39		// If _custom_header_background_just_in_time() fails to initialize $custom_image_header when not is_admin().40		if ( empty( $custom_image_header ) ) {41			require_once ABSPATH . 'wp-admin/includes/class-custom-image-header.php';42			$args                   = get_theme_support( 'custom-header' );43			$admin_head_callback    = isset( $args[0]['admin-head-callback'] ) ? $args[0]['admin-head-callback'] : null;44			$admin_preview_callback = isset( $args[0]['admin-preview-callback'] ) ? $args[0]['admin-preview-callback'] : null;45			$custom_image_header    = new Custom_Image_Header( $admin_head_callback, $admin_preview_callback );46		}47 48		/*49		 * If the value doesn't exist (removed or random),50		 * use the header_image value.51		 */52		if ( ! $value ) {53			$value = $this->manager->get_setting( 'header_image' )->post_value();54		}55 56		if ( is_array( $value ) && isset( $value['choice'] ) ) {57			$custom_image_header->set_header_image( $value['choice'] );58		} else {59			$custom_image_header->set_header_image( $value );60		}61	}

Changelog

Introduced in 3.4.0. One change between 6.7.7 and 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 6.9.7 tag, from src/wp-includes/customize/class-wp-customize-header-image-setting.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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