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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. */ #[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"; $cache_value = wp_cache_get_salted( $cache_key, 'network-queries', $last_changed ); 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_set_salted( $cache_key, $cache_value, 'network-queries', $last_changed ); } 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 { * Associative array of the clauses for the query. * * @type string $fields The SELECT clause of the query. * @type string $join The JOIN clause of the query. * @type string $where The WHERE clause of the query. * @type string $orderby The ORDER BY clause of the query. * @type string $limits The LIMIT clause of the query. * @type string $groupby The GROUP BY clause of the query. * } * @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'; } } }
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