register_and_do_post_meta_boxes( WP_Post $post )

Compatibility

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

Parameters

$postWP_Post

The post object that these meta boxes are being generated for.

Performance profile

How much work a call to register_and_do_post_meta_boxes() 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

155–239

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 468.

Plugin surface

4 hooks

Third-party callbacks on 'dbx_post_advanced', 'add_meta_boxes', 'add_meta_boxes_{$post_type}' run inside this call, and their cost is not bounded by anything here.

Called by

0

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

What it touches

• hookthird-party callbacksdo_action_deprecated()called directly
• querycontent queryget_post()one call below register_and_do_post_meta_boxes()

Further down the call graph this can also reach option, cache, serialize 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 · 225 distinct outcomes

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

This body has more branch combinations than are worth enumerating, so the table covers the outcomes found first rather than every one that exists.

Hooks and filters fired · 6

6 hooks fire while register_and_do_post_meta_boxes() runs, in this order:

1. 1
   do_action( dbx_post_advanced )action_deprecatedline 1646 (+115 into the body)

   Fires in the middle of built-in meta box registration.

2. 2
   do_action( add_meta_boxes )actionline 1692 (+161 into the body)

   Fires after all built-in meta boxes have been added.

3. 3
   do_action( add_meta_boxes_{$post_type} )actionline 1713 (+182 into the body)

   Fires after all built-in meta boxes have been added, contextually for the given post type.

4. 4
   do_action( do_meta_boxes )actionline 1728 (+197 into the body)

   Fires after meta boxes have been added.

5. 5
   do_action( do_meta_boxes )actionline 1730 (+199 into the body)

   Fires after meta boxes have been added.

6. 6
   do_action( do_meta_boxes )actionline 1732 (+201 into the body)

   Fires after meta boxes have been added.

Uses · 26

• get_post_type_object()Retrieves a post type object by name.
• current_theme_supports()Checks a theme's support for a given feature.
• post_type_supports()Checks a post type's support for a given feature.
• wp_attachment_is()Verifies an attachment is of a given type.
• wp_get_latest_revision_id_and_total_count()Returns the latest revision ID and count of revisions for a post.
• is_wp_error()Checks whether the given variable is a WordPress Error.
• add_meta_box()Adds a meta box to one or more screens.
• __()Retrieves the translation of $text.
• wp_enqueue_script()Enqueues a script.
• wp_enqueue_style()Enqueues a CSS stylesheet.
• add_action()Adds a callback function to an action hook.
• _x()Retrieves translated string with gettext context.

Source code

View on Trac ↗View on GitHub ↗

1531function register_and_do_post_meta_boxes( $post ) {1532	$post_type        = $post->post_type;1533	$post_type_object = get_post_type_object( $post_type );1534 1535	$thumbnail_support = current_theme_supports( 'post-thumbnails', $post_type ) && post_type_supports( $post_type, 'thumbnail' );1536	if ( ! $thumbnail_support && 'attachment' === $post_type && $post->post_mime_type ) {1537		if ( wp_attachment_is( 'audio', $post ) ) {1538			$thumbnail_support = post_type_supports( 'attachment:audio', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:audio' );1539		} elseif ( wp_attachment_is( 'video', $post ) ) {1540			$thumbnail_support = post_type_supports( 'attachment:video', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:video' );1541		}1542	}1543 1544	$publish_callback_args = array( '__back_compat_meta_box' => true );1545 1546	if ( post_type_supports( $post_type, 'revisions' ) && 'auto-draft' !== $post->post_status ) {1547		$revisions = wp_get_latest_revision_id_and_total_count( $post->ID );1548 1549		// We should aim to show the revisions meta box only when there are revisions.1550		if ( ! is_wp_error( $revisions ) && $revisions['count'] > 1 ) {1551			$publish_callback_args = array(1552				'revisions_count'        => $revisions['count'],1553				'revision_id'            => $revisions['latest_id'],1554				'__back_compat_meta_box' => true,1555			);1556 1557			add_meta_box( 'revisionsdiv', __( 'Revisions' ), 'post_revisions_meta_box', null, 'normal', 'core', array( '__back_compat_meta_box' => true ) );1558		}1559	}1560 1561	if ( 'attachment' === $post_type ) {1562		wp_enqueue_script( 'image-edit' );1563		wp_enqueue_style( 'imgareaselect' );1564		add_meta_box( 'submitdiv', __( 'Save' ), 'attachment_submit_meta_box', null, 'side', 'core', array( '__back_compat_meta_box' => true ) );1565		add_action( 'edit_form_after_title', 'edit_form_image_editor' );1566 1567		if ( wp_attachment_is( 'audio', $post ) ) {1568			add_meta_box( 'attachment-id3', __( 'Metadata' ), 'attachment_id3_data_meta_box', null, 'normal', 'core', array( '__back_compat_meta_box' => true ) );1569		}1570	} else {1571		add_meta_box( 'submitdiv', __( 'Publish' ), 'post_submit_meta_box', null, 'side', 'core', $publish_callback_args );1572	}1573 1574	if ( current_theme_supports( 'post-formats' ) && post_type_supports( $post_type, 'post-formats' ) ) {1575		add_meta_box( 'formatdiv', _x( 'Format', 'post format' ), 'post_format_meta_box', null, 'side', 'core', array( '__back_compat_meta_box' => true ) );1576	}1577 1578	// All taxonomies.1579	foreach ( get_object_taxonomies( $post ) as $tax_name ) {1580		$taxonomy = get_taxonomy( $tax_name );1581		if ( ! $taxonomy->show_ui || false === $taxonomy->meta_box_cb ) {1582			continue;1583		}1584 1585		$label = $taxonomy->labels->name;1586 1587		if ( ! is_taxonomy_hierarchical( $tax_name ) ) {1588			$tax_meta_box_id = 'tagsdiv-' . $tax_name;1589		} else {1590			$tax_meta_box_id = $tax_name . 'div';1591		}1592 1593		add_meta_box(1594			$tax_meta_box_id,1595			$label,1596			$taxonomy->meta_box_cb,1597			null,1598			'side',1599			'core',1600			array(1601				'taxonomy'               => $tax_name,1602				'__back_compat_meta_box' => true,1603			)1604		);1605	}1606 1607	if ( post_type_supports( $post_type, 'page-attributes' ) || count( get_page_templates( $post ) ) > 0 ) {1608		add_meta_box( 'pageparentdiv', $post_type_object->labels->attributes, 'page_attributes_meta_box', null, 'side', 'core', array( '__back_compat_meta_box' => true ) );1609	}1610

Changelog

Introduced in 5.0.0. 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-admin/includes/meta-boxes.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.