WordPress/wp-includes/class-wp-network-query.php

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<?php
/**
* Network API: WP_Network_Query class
*
* @package WordPress
* @subpackage Multisite
* @since 4.6.0
*/
/**
* Core class used for querying networks.
*
* @since 4.6.0
*
* @see WP_Network_Query::__construct() for accepted arguments.
*/
Code Modernization: Add `AllowDynamicProperties` attribute to all (parent) classes. Dynamic (non-explicitly declared) properties are deprecated as of PHP 8.2 and are expected to become a fatal error in PHP 9.0. There are a number of ways to mitigate this: * If it is an accidental typo for a declared property: fix the typo. * For known properties: declare them on the class. * For unknown properties: add the magic `__get()`, `__set()`, et al. methods to the class or let the class extend `stdClass` which has highly optimized versions of these magic methods built in. * For unknown ''use'' of dynamic properties, the `#[AllowDynamicProperties]` attribute can be added to the class. The attribute will automatically be inherited by child classes. Trac ticket #56034 is open to investigate and handle the third and fourth type of situations, however it has become clear this will need more time and will not be ready in time for WP 6.1. To reduce “noise” in the meantime, both in the error logs of WP users moving onto PHP 8.2, in the test run logs of WP itself, in test runs of plugins and themes, as well as to prevent duplicate tickets from being opened for the same issue, this commit adds the `#[AllowDynamicProperties]` attribute to all “parent” classes in WP. The logic used for this commit is as follows: * If a class already has the attribute: no action needed. * If a class does not `extend`: add the attribute. * If a class does `extend`: - If it extends `stdClass`: no action needed (as `stdClass` supports dynamic properties). - If it extends a PHP native class: add the attribute. - If it extends a class from one of WP's external dependencies: add the attribute. * In all other cases: no action — the attribute should not be needed as child classes inherit from the parent. Whether or not a class contains magic methods has not been taken into account, as a review of the currently existing magic methods has shown that those are generally not sturdy enough and often even set dynamic properties (which they should not). See the [https://www.youtube.com/watch?v=vDZWepDQQVE live stream from August 16, 2022] for more details. This commit only affects classes in the `src` directory of WordPress core. * Tests should not get this attribute, but should be fixed to not use dynamic properties instead. Patches for this are already being committed under ticket #56033. * While a number bundled themes (2014, 2019, 2020, 2021) contain classes, they are not a part of this commit and may be updated separately. Reference: [https://wiki.php.net/rfc/deprecate_dynamic_properties PHP RFC: Deprecate dynamic properties]. Follow-up to [53922]. Props jrf, hellofromTonya, markjaquith, peterwilsoncc, costdev, knutsp, aristath. See #56513, #56034. Built from https://develop.svn.wordpress.org/trunk@54133 git-svn-id: http://core.svn.wordpress.org/trunk@53692 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2022-09-12 11:47:14 -04:00
#[AllowDynamicProperties]
class WP_Network_Query {
/**
* SQL for database query.
*
* @since 4.6.0
* @var string
*/
public $request;
/**
* SQL query clauses.
*
* @since 4.6.0
* @var array
*/
protected $sql_clauses = array(
'select' => '',
'from' => '',
'where' => array(),
'groupby' => '',
'orderby' => '',
'limits' => '',
);
/**
* Query vars set by the user.
*
* @since 4.6.0
* @var array
*/
public $query_vars;
/**
* Default values for query vars.
*
* @since 4.6.0
* @var array
*/
public $query_var_defaults;
/**
* List of networks located by the query.
*
* @since 4.6.0
* @var array
*/
public $networks;
/**
* The amount of found networks for the current query.
*
* @since 4.6.0
* @var int
*/
public $found_networks = 0;
/**
* The number of pages.
*
* @since 4.6.0
* @var int
*/
public $max_num_pages = 0;
/**
* Constructor.
*
* Sets up the network query, based on the query vars passed.
*
* @since 4.6.0
*
* @param string|array $query {
* Optional. Array or query string of network query parameters. Default empty.
*
* @type int[] $network__in Array of network IDs to include. Default empty.
* @type int[] $network__not_in Array of network IDs to exclude. Default empty.
* @type bool $count Whether to return a network count (true) or array of network objects.
* Default false.
* @type string $fields Network fields to return. Accepts 'ids' (returns an array of network IDs)
* or empty (returns an array of complete network objects). Default empty.
* @type int $number Maximum number of networks to retrieve. Default empty (no limit).
* @type int $offset Number of networks to offset the query. Used to build LIMIT clause.
* Default 0.
* @type bool $no_found_rows Whether to disable the `SQL_CALC_FOUND_ROWS` query. Default true.
* @type string|array $orderby Network status or array of statuses. Accepts 'id', 'domain', 'path',
* 'domain_length', 'path_length' and 'network__in'. Also accepts false,
* an empty array, or 'none' to disable `ORDER BY` clause. Default 'id'.
* @type string $order How to order retrieved networks. Accepts 'ASC', 'DESC'. Default 'ASC'.
* @type string $domain Limit results to those affiliated with a given domain. Default empty.
* @type string[] $domain__in Array of domains to include affiliated networks for. Default empty.
* @type string[] $domain__not_in Array of domains to exclude affiliated networks for. Default empty.
* @type string $path Limit results to those affiliated with a given path. Default empty.
* @type string[] $path__in Array of paths to include affiliated networks for. Default empty.
* @type string[] $path__not_in Array of paths to exclude affiliated networks for. Default empty.
* @type string $search Search term(s) to retrieve matching networks for. Default empty.
* @type bool $update_network_cache Whether to prime the cache for found networks. Default true.
* }
*/
public function __construct( $query = '' ) {
$this->query_var_defaults = array(
'network__in' => '',
'network__not_in' => '',
'count' => false,
'fields' => '',
'number' => '',
'offset' => '',
'no_found_rows' => true,
'orderby' => 'id',
'order' => 'ASC',
'domain' => '',
'domain__in' => '',
'domain__not_in' => '',
'path' => '',
'path__in' => '',
'path__not_in' => '',
'search' => '',
'update_network_cache' => true,
);
if ( ! empty( $query ) ) {
$this->query( $query );
}
}
/**
* Parses arguments passed to the network query with default query parameters.
*
* @since 4.6.0
*
* @param string|array $query WP_Network_Query arguments. See WP_Network_Query::__construct() for accepted arguments.
*/
public function parse_query( $query = '' ) {
if ( empty( $query ) ) {
$query = $this->query_vars;
}
$this->query_vars = wp_parse_args( $query, $this->query_var_defaults );
/**
* Fires after the network query vars have been parsed.
*
* @since 4.6.0
*
* @param WP_Network_Query $query The WP_Network_Query instance (passed by reference).
*/
do_action_ref_array( 'parse_network_query', array( &$this ) );
}
/**
* Sets up the WordPress query for retrieving networks.
*
* @since 4.6.0
*
* @param string|array $query Array or URL query string of parameters.
* @return array|int List of WP_Network objects, a list of network IDs when 'fields' is set to 'ids',
* or the number of networks when 'count' is passed as a query var.
*/
public function query( $query ) {
$this->query_vars = wp_parse_args( $query );
return $this->get_networks();
}
/**
* Gets a list of networks matching the query vars.
*
* @since 4.6.0
*
* @return array|int List of WP_Network objects, a list of network IDs when 'fields' is set to 'ids',
* or the number of networks when 'count' is passed as a query var.
*/
public function get_networks() {
$this->parse_query();
/**
* Fires before networks are retrieved.
*
* @since 4.6.0
*
* @param WP_Network_Query $query Current instance of WP_Network_Query (passed by reference).
*/
do_action_ref_array( 'pre_get_networks', array( &$this ) );
$network_data = null;
/**
* Filters the network data before the query takes place.
*
* Return a non-null value to bypass WordPress' default network queries.
*
* The expected return type from this filter depends on the value passed
* in the request query vars:
* - When `$this->query_vars['count']` is set, the filter should return
* the network count as an integer.
* - When `'ids' === $this->query_vars['fields']`, the filter should return
* an array of network IDs.
* - Otherwise the filter should return an array of WP_Network objects.
*
* Note that if the filter returns an array of network data, it will be assigned
* to the `networks` property of the current WP_Network_Query instance.
*
* Filtering functions that require pagination information are encouraged to set
* the `found_networks` and `max_num_pages` properties of the WP_Network_Query object,
* passed to the filter by reference. If WP_Network_Query does not perform a database
* query, it will not have enough information to generate these values itself.
*
* @since 5.2.0
* @since 5.6.0 The returned array of network data is assigned to the `networks` property
* of the current WP_Network_Query instance.
*
* @param array|int|null $network_data Return an array of network data to short-circuit WP's network query,
* the network count as an integer if `$this->query_vars['count']` is set,
* or null to allow WP to run its normal queries.
* @param WP_Network_Query $query The WP_Network_Query instance, passed by reference.
*/
$network_data = apply_filters_ref_array( 'networks_pre_query', array( $network_data, &$this ) );
if ( null !== $network_data ) {
if ( is_array( $network_data ) && ! $this->query_vars['count'] ) {
$this->networks = $network_data;
}
return $network_data;
}
// $args can include anything. Only use the args defined in the query_var_defaults to compute the key.
$_args = wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) );
// Ignore the $fields, $update_network_cache arguments as the queried result will be the same regardless.
unset( $_args['fields'], $_args['update_network_cache'] );
$key = md5( serialize( $_args ) );
$last_changed = wp_cache_get_last_changed( 'networks' );
$cache_key = "get_network_ids:$key:$last_changed";
$cache_value = wp_cache_get( $cache_key, 'network-queries' );
if ( false === $cache_value ) {
$network_ids = $this->get_network_ids();
if ( $network_ids ) {
$this->set_found_networks();
}
$cache_value = array(
'network_ids' => $network_ids,
'found_networks' => $this->found_networks,
);
wp_cache_add( $cache_key, $cache_value, 'network-queries' );
} else {
$network_ids = $cache_value['network_ids'];
$this->found_networks = $cache_value['found_networks'];
}
if ( $this->found_networks && $this->query_vars['number'] ) {
$this->max_num_pages = (int) ceil( $this->found_networks / $this->query_vars['number'] );
}
// If querying for a count only, there's nothing more to do.
if ( $this->query_vars['count'] ) {
// $network_ids is actually a count in this case.
return (int) $network_ids;
}
$network_ids = array_map( 'intval', $network_ids );
if ( 'ids' === $this->query_vars['fields'] ) {
$this->networks = $network_ids;
return $this->networks;
}
if ( $this->query_vars['update_network_cache'] ) {
_prime_network_caches( $network_ids );
}
// Fetch full network objects from the primed cache.
$_networks = array();
foreach ( $network_ids as $network_id ) {
$_network = get_network( $network_id );
if ( $_network ) {
$_networks[] = $_network;
}
}
/**
* Filters the network query results.
*
* @since 4.6.0
*
* @param WP_Network[] $_networks An array of WP_Network objects.
* @param WP_Network_Query $query Current instance of WP_Network_Query (passed by reference).
*/
$_networks = apply_filters_ref_array( 'the_networks', array( $_networks, &$this ) );
// Convert to WP_Network instances.
$this->networks = array_map( 'get_network', $_networks );
return $this->networks;
}
/**
* Used internally to get a list of network IDs matching the query vars.
*
* @since 4.6.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @return int|array A single count of network IDs if a count query. An array of network IDs if a full query.
*/
protected function get_network_ids() {
global $wpdb;
$order = $this->parse_order( $this->query_vars['order'] );
// Disable ORDER BY with 'none', an empty array, or boolean false.
if ( in_array( $this->query_vars['orderby'], array( 'none', array(), false ), true ) ) {
$orderby = '';
} elseif ( ! empty( $this->query_vars['orderby'] ) ) {
$ordersby = is_array( $this->query_vars['orderby'] ) ?
$this->query_vars['orderby'] :
preg_split( '/[,\s]/', $this->query_vars['orderby'] );
$orderby_array = array();
foreach ( $ordersby as $_key => $_value ) {
if ( ! $_value ) {
continue;
}
if ( is_int( $_key ) ) {
$_orderby = $_value;
$_order = $order;
} else {
$_orderby = $_key;
$_order = $_value;
}
$parsed = $this->parse_orderby( $_orderby );
if ( ! $parsed ) {
continue;
}
if ( 'network__in' === $_orderby ) {
$orderby_array[] = $parsed;
continue;
}
$orderby_array[] = $parsed . ' ' . $this->parse_order( $_order );
}
$orderby = implode( ', ', $orderby_array );
} else {
$orderby = "$wpdb->site.id $order";
}
$number = absint( $this->query_vars['number'] );
$offset = absint( $this->query_vars['offset'] );
$limits = '';
if ( ! empty( $number ) ) {
if ( $offset ) {
$limits = 'LIMIT ' . $offset . ',' . $number;
} else {
$limits = 'LIMIT ' . $number;
}
}
if ( $this->query_vars['count'] ) {
$fields = 'COUNT(*)';
} else {
$fields = "$wpdb->site.id";
}
// Parse network IDs for an IN clause.
if ( ! empty( $this->query_vars['network__in'] ) ) {
$this->sql_clauses['where']['network__in'] = "$wpdb->site.id IN ( " . implode( ',', wp_parse_id_list( $this->query_vars['network__in'] ) ) . ' )';
}
// Parse network IDs for a NOT IN clause.
if ( ! empty( $this->query_vars['network__not_in'] ) ) {
$this->sql_clauses['where']['network__not_in'] = "$wpdb->site.id NOT IN ( " . implode( ',', wp_parse_id_list( $this->query_vars['network__not_in'] ) ) . ' )';
}
if ( ! empty( $this->query_vars['domain'] ) ) {
$this->sql_clauses['where']['domain'] = $wpdb->prepare( "$wpdb->site.domain = %s", $this->query_vars['domain'] );
}
// Parse network domain for an IN clause.
if ( is_array( $this->query_vars['domain__in'] ) ) {
$this->sql_clauses['where']['domain__in'] = "$wpdb->site.domain IN ( '" . implode( "', '", $wpdb->_escape( $this->query_vars['domain__in'] ) ) . "' )";
}
// Parse network domain for a NOT IN clause.
if ( is_array( $this->query_vars['domain__not_in'] ) ) {
$this->sql_clauses['where']['domain__not_in'] = "$wpdb->site.domain NOT IN ( '" . implode( "', '", $wpdb->_escape( $this->query_vars['domain__not_in'] ) ) . "' )";
}
if ( ! empty( $this->query_vars['path'] ) ) {
$this->sql_clauses['where']['path'] = $wpdb->prepare( "$wpdb->site.path = %s", $this->query_vars['path'] );
}
// Parse network path for an IN clause.
if ( is_array( $this->query_vars['path__in'] ) ) {
$this->sql_clauses['where']['path__in'] = "$wpdb->site.path IN ( '" . implode( "', '", $wpdb->_escape( $this->query_vars['path__in'] ) ) . "' )";
}
// Parse network path for a NOT IN clause.
if ( is_array( $this->query_vars['path__not_in'] ) ) {
$this->sql_clauses['where']['path__not_in'] = "$wpdb->site.path NOT IN ( '" . implode( "', '", $wpdb->_escape( $this->query_vars['path__not_in'] ) ) . "' )";
}
// Falsey search strings are ignored.
if ( strlen( $this->query_vars['search'] ) ) {
$this->sql_clauses['where']['search'] = $this->get_search_sql(
$this->query_vars['search'],
array( "$wpdb->site.domain", "$wpdb->site.path" )
);
}
$join = '';
$where = implode( ' AND ', $this->sql_clauses['where'] );
$groupby = '';
$pieces = array( 'fields', 'join', 'where', 'orderby', 'limits', 'groupby' );
/**
* Filters the network query clauses.
*
* @since 4.6.0
*
* @param string[] $clauses An associative array of network query clauses.
* @param WP_Network_Query $query Current instance of WP_Network_Query (passed by reference).
*/
$clauses = apply_filters_ref_array( 'networks_clauses', array( compact( $pieces ), &$this ) );
$fields = isset( $clauses['fields'] ) ? $clauses['fields'] : '';
$join = isset( $clauses['join'] ) ? $clauses['join'] : '';
$where = isset( $clauses['where'] ) ? $clauses['where'] : '';
$orderby = isset( $clauses['orderby'] ) ? $clauses['orderby'] : '';
$limits = isset( $clauses['limits'] ) ? $clauses['limits'] : '';
$groupby = isset( $clauses['groupby'] ) ? $clauses['groupby'] : '';
if ( $where ) {
$where = 'WHERE ' . $where;
}
if ( $groupby ) {
$groupby = 'GROUP BY ' . $groupby;
}
if ( $orderby ) {
$orderby = "ORDER BY $orderby";
}
$found_rows = '';
if ( ! $this->query_vars['no_found_rows'] ) {
$found_rows = 'SQL_CALC_FOUND_ROWS';
}
$this->sql_clauses['select'] = "SELECT $found_rows $fields";
$this->sql_clauses['from'] = "FROM $wpdb->site $join";
$this->sql_clauses['groupby'] = $groupby;
$this->sql_clauses['orderby'] = $orderby;
$this->sql_clauses['limits'] = $limits;
// Beginning of the string is on a new line to prevent leading whitespace. See https://core.trac.wordpress.org/ticket/56841.
$this->request =
"{$this->sql_clauses['select']}
{$this->sql_clauses['from']}
{$where}
{$this->sql_clauses['groupby']}
{$this->sql_clauses['orderby']}
{$this->sql_clauses['limits']}";
if ( $this->query_vars['count'] ) {
return (int) $wpdb->get_var( $this->request );
}
$network_ids = $wpdb->get_col( $this->request );
return array_map( 'intval', $network_ids );
}
/**
* Populates found_networks and max_num_pages properties for the current query
* if the limit clause was used.
*
* @since 4.6.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*/
private function set_found_networks() {
global $wpdb;
if ( $this->query_vars['number'] && ! $this->query_vars['no_found_rows'] ) {
/**
* Filters the query used to retrieve found network count.
*
* @since 4.6.0
*
* @param string $found_networks_query SQL query. Default 'SELECT FOUND_ROWS()'.
* @param WP_Network_Query $network_query The `WP_Network_Query` instance.
*/
$found_networks_query = apply_filters( 'found_networks_query', 'SELECT FOUND_ROWS()', $this );
$this->found_networks = (int) $wpdb->get_var( $found_networks_query );
}
}
/**
* Used internally to generate an SQL string for searching across multiple columns.
*
* @since 4.6.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $search Search string.
* @param string[] $columns Array of columns to search.
* @return string Search SQL.
*/
protected function get_search_sql( $search, $columns ) {
global $wpdb;
$like = '%' . $wpdb->esc_like( $search ) . '%';
$searches = array();
foreach ( $columns as $column ) {
$searches[] = $wpdb->prepare( "$column LIKE %s", $like );
}
return '(' . implode( ' OR ', $searches ) . ')';
}
/**
* Parses and sanitizes 'orderby' keys passed to the network query.
*
* @since 4.6.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $orderby Alias for the field to order by.
* @return string|false Value to used in the ORDER clause. False otherwise.
*/
protected function parse_orderby( $orderby ) {
global $wpdb;
$allowed_keys = array(
'id',
'domain',
'path',
);
$parsed = false;
if ( 'network__in' === $orderby ) {
$network__in = implode( ',', array_map( 'absint', $this->query_vars['network__in'] ) );
$parsed = "FIELD( {$wpdb->site}.id, $network__in )";
} elseif ( 'domain_length' === $orderby || 'path_length' === $orderby ) {
$field = substr( $orderby, 0, -7 );
$parsed = "CHAR_LENGTH($wpdb->site.$field)";
} elseif ( in_array( $orderby, $allowed_keys, true ) ) {
$parsed = "$wpdb->site.$orderby";
}
return $parsed;
}
/**
* Parses an 'order' query variable and cast it to 'ASC' or 'DESC' as necessary.
*
* @since 4.6.0
*
* @param string $order The 'order' query variable.
* @return string The sanitized 'order' query variable.
*/
protected function parse_order( $order ) {
if ( ! is_string( $order ) || empty( $order ) ) {
return 'ASC';
}
if ( 'ASC' === strtoupper( $order ) ) {
return 'ASC';
} else {
return 'DESC';
}
}
}