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WordPress

WP_REST_Users_Controller::get_item_schema(): array

Since
4.7.0
Source
wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php:1394
Retrieves the user's schema, conforming to JSON Schema.

Compatibility

WordPress
since 4.7.0
PHP
7.4–8.6-dev
  • 6.7.7
  • 6.8.8
  • 6.9.7
  • 7.0.4
  • 7.1.0

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

Return value

array
Item schema data.

Performance profile

How much work a call to WP_REST_Users_Controller::get_item_schema() 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

Reads stored settings via get_option(), cached per request but not free on a cold cache.

Scaling
Scales with input

The body loops, so the work grows with how much data it finds.

Instructions
8–201

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 221.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
3

3 places in core call this, so the cost is paid more often than your own code shows.

What it touches

  • optionoption read or writeget_option()called directly
  • hookthird-party callbacksapply_filters()one call below WP_REST_Users_Controller::get_item_schema()
  • cacheobject cachewp_cache_get()one call below WP_REST_Users_Controller::get_item_schema()
  • serializeserialisationmaybe_unserialize()one call below WP_REST_Users_Controller::get_item_schema()

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

What one call costs · 3 distinct outcomes

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

WhenInstructionsCalls it makes
always8->add_additional_fields_schema()
!get_option()183__(), __(), __(), __(), __(), __(), __(), __(), __(), __(), get_available_languages(), array_merge(), __(), __(), __(), __(), __(), __(), __(), get_option(), ->get_field_schema(), ->add_additional_fields_schema()
get_option()200–201__(), __(), __(), __(), __(), __(), __(), __(), __(), __(), get_available_languages(), array_merge(), __(), __(), __(), __(), __(), __(), __(), get_option(), rest_get_avatar_sizes(), __(), ->get_field_schema(), ->add_additional_fields_schema()

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 221 instructions, 8–201 executed per call, 4 branches. The work does not change between versions.

An instruction is not a fixed amount of time, so a matching count is not necessarily the same speed; what it rules out is a difference in the work itself.

Uses · 5

  • __()Retrieves the translation of $text.
  • get_available_languages()Gets all available languages based on the presence of *.mo and *.l10n.php files in a given directory.
  • get_option()Retrieves an option value based on an option name.
  • rest_get_avatar_sizes()Retrieves the pixel sizes for avatars.
  • WP_REST_Users_Controller::add_additional_fields_schema()

Used by · 3

Source code

	public function get_item_schema() {		if ( $this->schema ) {			return $this->add_additional_fields_schema( $this->schema );		} 		$schema = array(			'$schema'    => 'http://json-schema.org/draft-04/schema#',			'title'      => 'user',			'type'       => 'object',			'properties' => array(				'id'                 => array(					'description' => __( 'Unique identifier for the user.' ),					'type'        => 'integer',					'context'     => array( 'embed', 'view', 'edit' ),					'readonly'    => true,				),				'username'           => array(					'description' => __( 'Login name for the user.' ),					'type'        => 'string',					'context'     => array( 'edit' ),					'required'    => true,					'arg_options' => array(						'sanitize_callback' => array( $this, 'check_username' ),					),				),				'name'               => array(					'description' => __( 'Display name for the user.' ),					'type'        => 'string',					'context'     => array( 'embed', 'view', 'edit' ),					'arg_options' => array(						'sanitize_callback' => 'sanitize_text_field',					),				),				'first_name'         => array(					'description' => __( 'First name for the user.' ),					'type'        => 'string',					'context'     => array( 'edit' ),					'arg_options' => array(						'sanitize_callback' => 'sanitize_text_field',					),				),				'last_name'          => array(					'description' => __( 'Last name for the user.' ),					'type'        => 'string',					'context'     => array( 'edit' ),					'arg_options' => array(						'sanitize_callback' => 'sanitize_text_field',					),				),				'email'              => array(					'description' => __( 'The email address for the user.' ),					'type'        => 'string',					'format'      => 'email',					'context'     => array( 'edit' ),					'required'    => true,				),				'url'                => array(					'description' => __( 'URL of the user.' ),					'type'        => 'string',					'format'      => 'uri',					'context'     => array( 'embed', 'view', 'edit' ),				),				'description'        => array(					'description' => __( 'Description of the user.' ),					'type'        => 'string',					'context'     => array( 'embed', 'view', 'edit' ),				),				'link'               => array(					'description' => __( 'Author URL of the user.' ),					'type'        => 'string',					'format'      => 'uri',					'context'     => array( 'embed', 'view', 'edit' ),					'readonly'    => true,				),				'locale'             => array(					'description' => __( 'Locale for the user.' ),					'type'        => 'string',					'enum'        => array_merge( array( '', 'en_US' ), get_available_languages() ),					'context'     => array( 'edit' ),				),

Changelog

Introduced in 4.7.0. 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 7.0.4 tag, from src/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
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