WP_Posts_List_Table::column_default( WP_Post $item, string $column_name )

Compatibility

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

Parameters

$itemWP_Post

The current WP_Post object.

$column_namestring

The current column name.

Performance profile

How much work a call to WP_Posts_List_Table::column_default() 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

Scales with input

The body loops, so the work grows with what you pass in.

Instructions

27–41

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 126.

Plugin surface

4 hooks

Third-party callbacks on 'post_column_taxonomy_links', 'manage_pages_custom_column', 'manage_posts_custom_column' 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 callbacksapply_filters()called directly
• querycontent queryget_post()one call below WP_Posts_List_Table::column_default()
• cacheobject cachewp_cache_add()one call below WP_Posts_List_Table::column_default()

Further down the call graph this can also reach option, 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 · 3 distinct outcomes

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

Hooks and filters fired · 4

4 hooks fire while WP_Posts_List_Table::column_default() runs, in this order:

1. 1
   apply_filters( post_column_taxonomy_links )filterline 1454 (+49 into the body)

   Filters the links in `$taxonomy` column of edit.php.

2. 2
   do_action( manage_pages_custom_column )actionline 1476 (+71 into the body)

   Fires in each custom column on the Posts list table.

3. 3
   do_action( manage_posts_custom_column )actionline 1490 (+85 into the body)

   Fires in each custom column in the Posts list table.

4. 4
   do_action( manage_{$post->post_type}_posts_custom_column )actionline 1508 (+103 into the body)

   Fires for each custom column of a specific post type in the Posts list table.

Uses · 10

• str_starts_with()Polyfill for `str_starts_with()` function added in PHP 8.0.
• get_taxonomy()Retrieves the taxonomy object of $taxonomy.
• get_the_terms()Retrieves the terms of the taxonomy that are attached to the post.
• esc_html()Escaping for HTML blocks.
• sanitize_term_field()Sanitizes the field value in the term based on the context.
• apply_filters()Calls the callback functions that have been added to a filter hook.
• wp_get_list_item_separator()Retrieves the list item separator based on the locale.
• is_post_type_hierarchical()Determines whether the post type is hierarchical.
• do_action()Calls the callback functions that have been added to an action hook.
• WP_Posts_List_Table::get_edit_link()Creates a link to edit.php with params.

Source code

View on Trac ↗View on GitHub ↗

1405	public function column_default( $item, $column_name ) {1406		// Restores the more descriptive, specific name for use within this method.1407		$post = $item;1408 1409		if ( 'categories' === $column_name ) {1410			$taxonomy = 'category';1411		} elseif ( 'tags' === $column_name ) {1412			$taxonomy = 'post_tag';1413		} elseif ( str_starts_with( $column_name, 'taxonomy-' ) ) {1414			$taxonomy = substr( $column_name, 9 );1415		} else {1416			$taxonomy = false;1417		}1418 1419		if ( $taxonomy ) {1420			$taxonomy_object = get_taxonomy( $taxonomy );1421			$terms           = get_the_terms( $post->ID, $taxonomy );1422 1423			if ( is_array( $terms ) ) {1424				$term_links = array();1425 1426				foreach ( $terms as $t ) {1427					$posts_in_term_qv = array();1428 1429					if ( 'post' !== $post->post_type ) {1430						$posts_in_term_qv['post_type'] = $post->post_type;1431					}1432 1433					if ( $taxonomy_object->query_var ) {1434						$posts_in_term_qv[ $taxonomy_object->query_var ] = $t->slug;1435					} else {1436						$posts_in_term_qv['taxonomy'] = $taxonomy;1437						$posts_in_term_qv['term']     = $t->slug;1438					}1439 1440					$label = esc_html( sanitize_term_field( 'name', $t->name, $t->term_id, $taxonomy, 'display' ) );1441 1442					$term_links[] = $this->get_edit_link( $posts_in_term_qv, $label );1443				}1444 1445				/**1446				 * Filters the links in `$taxonomy` column of edit.php.1447				 *1448				 * @since 5.2.01449				 *1450				 * @param string[]  $term_links Array of term editing links.1451				 * @param string    $taxonomy   Taxonomy name.1452				 * @param WP_Term[] $terms      Array of term objects appearing in the post row.1453				 */1454				$term_links = apply_filters( 'post_column_taxonomy_links', $term_links, $taxonomy, $terms );1455 1456				echo implode( wp_get_list_item_separator(), $term_links );1457			} else {1458				echo '<span aria-hidden="true">&#8212;</span><span class="screen-reader-text">' . $taxonomy_object->labels->no_terms . '</span>';1459			}1460			return;1461		}1462 1463		if ( is_post_type_hierarchical( $post->post_type ) ) {1464 1465			/**1466			 * Fires in each custom column on the Posts list table.1467			 *1468			 * This hook only fires if the current post type is hierarchical,1469			 * such as pages.1470			 *1471			 * @since 2.5.01472			 *1473			 * @param string $column_name The name of the column to display.1474			 * @param int    $post_id     The current post ID.1475			 */1476			do_action( 'manage_pages_custom_column', $column_name, $post->ID );1477		} else {1478 1479			/**1480			 * Fires in each custom column in the Posts list table.1481			 *1482			 * This hook only fires if the current post type is non-hierarchical,1483			 * such as posts.1484			 *

Changelog

Introduced in 4.3.0. 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/class-wp-posts-list-table.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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