WP_MS_Sites_List_Table::prepare_items()

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 WP_MS_Sites_List_Table::prepare_items() 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_col().

Scaling

Constant

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

Instructions

85–157

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 238.

Plugin surface

1 hook

Third-party callbacks on 'ms_sites_list_table_query_args' 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
• sqldatabase query->get_col()called directly
• cacheobject cachewp_cache_add_multiple()one call below WP_MS_Sites_List_Table::prepare_items()

Further down the call graph this can also reach option, serialize, 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 · 32 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost WP_MS_Sites_List_Table::prepare_items() 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 · 1

One hook fires while WP_MS_Sites_List_Table::prepare_items() runs, in this order:

1. 1
   apply_filters( ms_sites_list_table_query_args )filterline 184 (+112 into the body)

   Filters the arguments for the site query in the sites list table.

Uses · 13

• set_user_setting()Adds or updates user interface setting.
• get_user_setting()Retrieves user interface setting value based on setting name.
• wp_unslash()Removes slashes from a string or recursively removes slashes from strings within an array.
• str_contains()Polyfill for `str_contains()` function added in PHP 8.0.
• wp_is_large_network()Determines whether or not we have a large network.
• get_current_network_id()Retrieves the current network ID.
• is_subdomain_install()Whether a subdomain configuration is enabled.
• apply_filters()Calls the callback functions that have been added to a filter hook.
• get_sites()Retrieves a list of sites matching requested arguments.
• update_site_cache()Updates sites in cache.
• WP_MS_Sites_List_Table::get_items_per_page()
• WP_MS_Sites_List_Table::get_pagenum()

Source code

View on Trac ↗View on GitHub ↗

72	public function prepare_items() {73		global $mode, $s, $wpdb;74 75		if ( ! empty( $_REQUEST['mode'] ) ) {76			$mode = 'excerpt' === $_REQUEST['mode'] ? 'excerpt' : 'list';77			set_user_setting( 'sites_list_mode', $mode );78		} else {79			$mode = get_user_setting( 'sites_list_mode', 'list' );80		}81 82		$per_page = $this->get_items_per_page( 'sites_network_per_page' );83 84		$pagenum = $this->get_pagenum();85 86		$s    = isset( $_REQUEST['s'] ) ? wp_unslash( trim( $_REQUEST['s'] ) ) : '';87		$wild = '';88		if ( str_contains( $s, '*' ) ) {89			$wild = '*';90			$s    = trim( $s, '*' );91		}92 93		/*94		 * If the network is large and a search is not being performed, show only95		 * the latest sites with no paging in order to avoid expensive count queries.96		 */97		if ( ! $s && wp_is_large_network() ) {98			if ( ! isset( $_REQUEST['orderby'] ) ) {99				$_GET['orderby']     = '';100				$_REQUEST['orderby'] = '';101			}102			if ( ! isset( $_REQUEST['order'] ) ) {103				$_GET['order']     = 'DESC';104				$_REQUEST['order'] = 'DESC';105			}106		}107 108		$args = array(109			'number'     => (int) $per_page,110			'offset'     => (int) ( ( $pagenum - 1 ) * $per_page ),111			'network_id' => get_current_network_id(),112		);113 114		if ( empty( $s ) ) {115			// Nothing to do.116		} elseif ( preg_match( '/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$/', $s )117			|| preg_match( '/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.?$/', $s )118			|| preg_match( '/^[0-9]{1,3}\.[0-9]{1,3}\.?$/', $s )119			|| preg_match( '/^[0-9]{1,3}\.$/', $s )120		) {121			// IPv4 address.122			$reg_blog_ids = $wpdb->get_col(123				$wpdb->prepare(124					"SELECT blog_id FROM {$wpdb->registration_log} WHERE {$wpdb->registration_log}.IP LIKE %s",125					$wpdb->esc_like( $s ) . ( ! empty( $wild ) ? '%' : '' )126				)127			);128 129			if ( $reg_blog_ids ) {130				$args['site__in'] = $reg_blog_ids;131			}132		} elseif ( is_numeric( $s ) && empty( $wild ) ) {133			$args['ID'] = $s;134		} else {135			$args['search'] = $s;136 137			if ( ! is_subdomain_install() ) {138				$args['search_columns'] = array( 'path' );139			}140		}141 142		$order_by = $_REQUEST['orderby'] ?? '';143		if ( 'registered' === $order_by ) {144			// 'registered' is a valid field name.145		} elseif ( 'lastupdated' === $order_by ) {146			$order_by = 'last_updated';147		} elseif ( 'blogname' === $order_by ) {148			if ( is_subdomain_install() ) {149				$order_by = 'domain';150			} else {151				$order_by = 'path';

Changelog

Introduced in 3.1.0. 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-ms-sites-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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