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1 <?php 2 /** 3 * Network API: WP_Network_Query class 4 * 5 * @package WordPress 6 * @subpackage Multisite 7 * @since 4.6.0 8 */ 9 10 /** 11 * Core class used for querying networks. 12 * 13 * @since 4.6.0 14 * 15 * @see WP_Network_Query::__construct() for accepted arguments. 16 */ 17 #[AllowDynamicProperties] 18 class WP_Network_Query { 19 20 /** 21 * SQL for database query. 22 * 23 * @since 4.6.0 24 * @var string 25 */ 26 public $request; 27 28 /** 29 * SQL query clauses. 30 * 31 * @since 4.6.0 32 * @var array 33 */ 34 protected $sql_clauses = array( 35 'select' => '', 36 'from' => '', 37 'where' => array(), 38 'groupby' => '', 39 'orderby' => '', 40 'limits' => '', 41 ); 42 43 /** 44 * Query vars set by the user. 45 * 46 * @since 4.6.0 47 * @var array 48 */ 49 public $query_vars; 50 51 /** 52 * Default values for query vars. 53 * 54 * @since 4.6.0 55 * @var array 56 */ 57 public $query_var_defaults; 58 59 /** 60 * List of networks located by the query. 61 * 62 * @since 4.6.0 63 * @var array 64 */ 65 public $networks; 66 67 /** 68 * The amount of found networks for the current query. 69 * 70 * @since 4.6.0 71 * @var int 72 */ 73 public $found_networks = 0; 74 75 /** 76 * The number of pages. 77 * 78 * @since 4.6.0 79 * @var int 80 */ 81 public $max_num_pages = 0; 82 83 /** 84 * Constructor. 85 * 86 * Sets up the network query, based on the query vars passed. 87 * 88 * @since 4.6.0 89 * 90 * @param string|array $query { 91 * Optional. Array or query string of network query parameters. Default empty. 92 * 93 * @type int[] $network__in Array of network IDs to include. Default empty. 94 * @type int[] $network__not_in Array of network IDs to exclude. Default empty. 95 * @type bool $count Whether to return a network count (true) or array of network objects. 96 * Default false. 97 * @type string $fields Network fields to return. Accepts 'ids' (returns an array of network IDs) 98 * or empty (returns an array of complete network objects). Default empty. 99 * @type int $number Maximum number of networks to retrieve. Default empty (no limit). 100 * @type int $offset Number of networks to offset the query. Used to build LIMIT clause. 101 * Default 0. 102 * @type bool $no_found_rows Whether to disable the `SQL_CALC_FOUND_ROWS` query. Default true. 103 * @type string|array $orderby Network status or array of statuses. Accepts 'id', 'domain', 'path', 104 * 'domain_length', 'path_length' and 'network__in'. Also accepts false, 105 * an empty array, or 'none' to disable `ORDER BY` clause. Default 'id'. 106 * @type string $order How to order retrieved networks. Accepts 'ASC', 'DESC'. Default 'ASC'. 107 * @type string $domain Limit results to those affiliated with a given domain. Default empty. 108 * @type string[] $domain__in Array of domains to include affiliated networks for. Default empty. 109 * @type string[] $domain__not_in Array of domains to exclude affiliated networks for. Default empty. 110 * @type string $path Limit results to those affiliated with a given path. Default empty. 111 * @type string[] $path__in Array of paths to include affiliated networks for. Default empty. 112 * @type string[] $path__not_in Array of paths to exclude affiliated networks for. Default empty. 113 * @type string $search Search term(s) to retrieve matching networks for. Default empty. 114 * @type bool $update_network_cache Whether to prime the cache for found networks. Default true. 115 * } 116 */ 117 public function __construct( $query = '' ) { 118 $this->query_var_defaults = array( 119 'network__in' => '', 120 'network__not_in' => '', 121 'count' => false, 122 'fields' => '', 123 'number' => '', 124 'offset' => '', 125 'no_found_rows' => true, 126 'orderby' => 'id', 127 'order' => 'ASC', 128 'domain' => '', 129 'domain__in' => '', 130 'domain__not_in' => '', 131 'path' => '', 132 'path__in' => '', 133 'path__not_in' => '', 134 'search' => '', 135 'update_network_cache' => true, 136 ); 137 138 if ( ! empty( $query ) ) { 139 $this->query( $query ); 140 } 141 } 142 143 /** 144 * Parses arguments passed to the network query with default query parameters. 145 * 146 * @since 4.6.0 147 * 148 * @param string|array $query WP_Network_Query arguments. See WP_Network_Query::__construct() for accepted arguments. 149 */ 150 public function parse_query( $query = '' ) { 151 if ( empty( $query ) ) { 152 $query = $this->query_vars; 153 } 154 155 $this->query_vars = wp_parse_args( $query, $this->query_var_defaults ); 156 157 /** 158 * Fires after the network query vars have been parsed. 159 * 160 * @since 4.6.0 161 * 162 * @param WP_Network_Query $query The WP_Network_Query instance (passed by reference). 163 */ 164 do_action_ref_array( 'parse_network_query', array( &$this ) ); 165 } 166 167 /** 168 * Sets up the WordPress query for retrieving networks. 169 * 170 * @since 4.6.0 171 * 172 * @param string|array $query Array or URL query string of parameters. 173 * @return array|int List of WP_Network objects, a list of network IDs when 'fields' is set to 'ids', 174 * or the number of networks when 'count' is passed as a query var. 175 */ 176 public function query( $query ) { 177 $this->query_vars = wp_parse_args( $query ); 178 return $this->get_networks(); 179 } 180 181 /** 182 * Gets a list of networks matching the query vars. 183 * 184 * @since 4.6.0 185 * 186 * @return array|int List of WP_Network objects, a list of network IDs when 'fields' is set to 'ids', 187 * or the number of networks when 'count' is passed as a query var. 188 */ 189 public function get_networks() { 190 $this->parse_query(); 191 192 /** 193 * Fires before networks are retrieved. 194 * 195 * @since 4.6.0 196 * 197 * @param WP_Network_Query $query Current instance of WP_Network_Query (passed by reference). 198 */ 199 do_action_ref_array( 'pre_get_networks', array( &$this ) ); 200 201 $network_data = null; 202 203 /** 204 * Filters the network data before the query takes place. 205 * 206 * Return a non-null value to bypass WordPress' default network queries. 207 * 208 * The expected return type from this filter depends on the value passed 209 * in the request query vars: 210 * - When `$this->query_vars['count']` is set, the filter should return 211 * the network count as an integer. 212 * - When `'ids' === $this->query_vars['fields']`, the filter should return 213 * an array of network IDs. 214 * - Otherwise the filter should return an array of WP_Network objects. 215 * 216 * Note that if the filter returns an array of network data, it will be assigned 217 * to the `networks` property of the current WP_Network_Query instance. 218 * 219 * Filtering functions that require pagination information are encouraged to set 220 * the `found_networks` and `max_num_pages` properties of the WP_Network_Query object, 221 * passed to the filter by reference. If WP_Network_Query does not perform a database 222 * query, it will not have enough information to generate these values itself. 223 * 224 * @since 5.2.0 225 * @since 5.6.0 The returned array of network data is assigned to the `networks` property 226 * of the current WP_Network_Query instance. 227 * 228 * @param array|int|null $network_data Return an array of network data to short-circuit WP's network query, 229 * the network count as an integer if `$this->query_vars['count']` is set, 230 * or null to allow WP to run its normal queries. 231 * @param WP_Network_Query $query The WP_Network_Query instance, passed by reference. 232 */ 233 $network_data = apply_filters_ref_array( 'networks_pre_query', array( $network_data, &$this ) ); 234 235 if ( null !== $network_data ) { 236 if ( is_array( $network_data ) && ! $this->query_vars['count'] ) { 237 $this->networks = $network_data; 238 } 239 240 return $network_data; 241 } 242 243 // $args can include anything. Only use the args defined in the query_var_defaults to compute the key. 244 $_args = wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) ); 245 246 // Ignore the $fields, $update_network_cache arguments as the queried result will be the same regardless. 247 unset( $_args['fields'], $_args['update_network_cache'] ); 248 249 $key = md5( serialize( $_args ) ); 250 $last_changed = wp_cache_get_last_changed( 'networks' ); 251 252 $cache_key = "get_network_ids:$key:$last_changed"; 253 $cache_value = wp_cache_get( $cache_key, 'network-queries' ); 254 255 if ( false === $cache_value ) { 256 $network_ids = $this->get_network_ids(); 257 if ( $network_ids ) { 258 $this->set_found_networks(); 259 } 260 261 $cache_value = array( 262 'network_ids' => $network_ids, 263 'found_networks' => $this->found_networks, 264 ); 265 wp_cache_add( $cache_key, $cache_value, 'network-queries' ); 266 } else { 267 $network_ids = $cache_value['network_ids']; 268 $this->found_networks = $cache_value['found_networks']; 269 } 270 271 if ( $this->found_networks && $this->query_vars['number'] ) { 272 $this->max_num_pages = (int) ceil( $this->found_networks / $this->query_vars['number'] ); 273 } 274 275 // If querying for a count only, there's nothing more to do. 276 if ( $this->query_vars['count'] ) { 277 // $network_ids is actually a count in this case. 278 return (int) $network_ids; 279 } 280 281 $network_ids = array_map( 'intval', $network_ids ); 282 283 if ( 'ids' === $this->query_vars['fields'] ) { 284 $this->networks = $network_ids; 285 return $this->networks; 286 } 287 288 if ( $this->query_vars['update_network_cache'] ) { 289 _prime_network_caches( $network_ids ); 290 } 291 292 // Fetch full network objects from the primed cache. 293 $_networks = array(); 294 foreach ( $network_ids as $network_id ) { 295 $_network = get_network( $network_id ); 296 if ( $_network ) { 297 $_networks[] = $_network; 298 } 299 } 300 301 /** 302 * Filters the network query results. 303 * 304 * @since 4.6.0 305 * 306 * @param WP_Network[] $_networks An array of WP_Network objects. 307 * @param WP_Network_Query $query Current instance of WP_Network_Query (passed by reference). 308 */ 309 $_networks = apply_filters_ref_array( 'the_networks', array( $_networks, &$this ) ); 310 311 // Convert to WP_Network instances. 312 $this->networks = array_map( 'get_network', $_networks ); 313 314 return $this->networks; 315 } 316 317 /** 318 * Used internally to get a list of network IDs matching the query vars. 319 * 320 * @since 4.6.0 321 * 322 * @global wpdb $wpdb WordPress database abstraction object. 323 * 324 * @return int|array A single count of network IDs if a count query. An array of network IDs if a full query. 325 */ 326 protected function get_network_ids() { 327 global $wpdb; 328 329 $order = $this->parse_order( $this->query_vars['order'] ); 330 331 // Disable ORDER BY with 'none', an empty array, or boolean false. 332 if ( in_array( $this->query_vars['orderby'], array( 'none', array(), false ), true ) ) { 333 $orderby = ''; 334 } elseif ( ! empty( $this->query_vars['orderby'] ) ) { 335 $ordersby = is_array( $this->query_vars['orderby'] ) ? 336 $this->query_vars['orderby'] : 337 preg_split( '/[,\s]/', $this->query_vars['orderby'] ); 338 339 $orderby_array = array(); 340 foreach ( $ordersby as $_key => $_value ) { 341 if ( ! $_value ) { 342 continue; 343 } 344 345 if ( is_int( $_key ) ) { 346 $_orderby = $_value; 347 $_order = $order; 348 } else { 349 $_orderby = $_key; 350 $_order = $_value; 351 } 352 353 $parsed = $this->parse_orderby( $_orderby ); 354 355 if ( ! $parsed ) { 356 continue; 357 } 358 359 if ( 'network__in' === $_orderby ) { 360 $orderby_array[] = $parsed; 361 continue; 362 } 363 364 $orderby_array[] = $parsed . ' ' . $this->parse_order( $_order ); 365 } 366 367 $orderby = implode( ', ', $orderby_array ); 368 } else { 369 $orderby = "$wpdb->site.id $order"; 370 } 371 372 $number = absint( $this->query_vars['number'] ); 373 $offset = absint( $this->query_vars['offset'] ); 374 $limits = ''; 375 376 if ( ! empty( $number ) ) { 377 if ( $offset ) { 378 $limits = 'LIMIT ' . $offset . ',' . $number; 379 } else { 380 $limits = 'LIMIT ' . $number; 381 } 382 } 383 384 if ( $this->query_vars['count'] ) { 385 $fields = 'COUNT(*)'; 386 } else { 387 $fields = "$wpdb->site.id"; 388 } 389 390 // Parse network IDs for an IN clause. 391 if ( ! empty( $this->query_vars['network__in'] ) ) { 392 $this->sql_clauses['where']['network__in'] = "$wpdb->site.id IN ( " . implode( ',', wp_parse_id_list( $this->query_vars['network__in'] ) ) . ' )'; 393 } 394 395 // Parse network IDs for a NOT IN clause. 396 if ( ! empty( $this->query_vars['network__not_in'] ) ) { 397 $this->sql_clauses['where']['network__not_in'] = "$wpdb->site.id NOT IN ( " . implode( ',', wp_parse_id_list( $this->query_vars['network__not_in'] ) ) . ' )'; 398 } 399 400 if ( ! empty( $this->query_vars['domain'] ) ) { 401 $this->sql_clauses['where']['domain'] = $wpdb->prepare( "$wpdb->site.domain = %s", $this->query_vars['domain'] ); 402 } 403 404 // Parse network domain for an IN clause. 405 if ( is_array( $this->query_vars['domain__in'] ) ) { 406 $this->sql_clauses['where']['domain__in'] = "$wpdb->site.domain IN ( '" . implode( "', '", $wpdb->_escape( $this->query_vars['domain__in'] ) ) . "' )"; 407 } 408 409 // Parse network domain for a NOT IN clause. 410 if ( is_array( $this->query_vars['domain__not_in'] ) ) { 411 $this->sql_clauses['where']['domain__not_in'] = "$wpdb->site.domain NOT IN ( '" . implode( "', '", $wpdb->_escape( $this->query_vars['domain__not_in'] ) ) . "' )"; 412 } 413 414 if ( ! empty( $this->query_vars['path'] ) ) { 415 $this->sql_clauses['where']['path'] = $wpdb->prepare( "$wpdb->site.path = %s", $this->query_vars['path'] ); 416 } 417 418 // Parse network path for an IN clause. 419 if ( is_array( $this->query_vars['path__in'] ) ) { 420 $this->sql_clauses['where']['path__in'] = "$wpdb->site.path IN ( '" . implode( "', '", $wpdb->_escape( $this->query_vars['path__in'] ) ) . "' )"; 421 } 422 423 // Parse network path for a NOT IN clause. 424 if ( is_array( $this->query_vars['path__not_in'] ) ) { 425 $this->sql_clauses['where']['path__not_in'] = "$wpdb->site.path NOT IN ( '" . implode( "', '", $wpdb->_escape( $this->query_vars['path__not_in'] ) ) . "' )"; 426 } 427 428 // Falsey search strings are ignored. 429 if ( strlen( $this->query_vars['search'] ) ) { 430 $this->sql_clauses['where']['search'] = $this->get_search_sql( 431 $this->query_vars['search'], 432 array( "$wpdb->site.domain", "$wpdb->site.path" ) 433 ); 434 } 435 436 $join = ''; 437 438 $where = implode( ' AND ', $this->sql_clauses['where'] ); 439 440 $groupby = ''; 441 442 $pieces = array( 'fields', 'join', 'where', 'orderby', 'limits', 'groupby' ); 443 444 /** 445 * Filters the network query clauses. 446 * 447 * @since 4.6.0 448 * 449 * @param string[] $clauses { 450 * Associative array of the clauses for the query. 451 * 452 * @type string $fields The SELECT clause of the query. 453 * @type string $join The JOIN clause of the query. 454 * @type string $where The WHERE clause of the query. 455 * @type string $orderby The ORDER BY clause of the query. 456 * @type string $limits The LIMIT clause of the query. 457 * @type string $groupby The GROUP BY clause of the query. 458 * } 459 * @param WP_Network_Query $query Current instance of WP_Network_Query (passed by reference). 460 */ 461 $clauses = apply_filters_ref_array( 'networks_clauses', array( compact( $pieces ), &$this ) ); 462 463 $fields = isset( $clauses['fields'] ) ? $clauses['fields'] : ''; 464 $join = isset( $clauses['join'] ) ? $clauses['join'] : ''; 465 $where = isset( $clauses['where'] ) ? $clauses['where'] : ''; 466 $orderby = isset( $clauses['orderby'] ) ? $clauses['orderby'] : ''; 467 $limits = isset( $clauses['limits'] ) ? $clauses['limits'] : ''; 468 $groupby = isset( $clauses['groupby'] ) ? $clauses['groupby'] : ''; 469 470 if ( $where ) { 471 $where = 'WHERE ' . $where; 472 } 473 474 if ( $groupby ) { 475 $groupby = 'GROUP BY ' . $groupby; 476 } 477 478 if ( $orderby ) { 479 $orderby = "ORDER BY $orderby"; 480 } 481 482 $found_rows = ''; 483 if ( ! $this->query_vars['no_found_rows'] ) { 484 $found_rows = 'SQL_CALC_FOUND_ROWS'; 485 } 486 487 $this->sql_clauses['select'] = "SELECT $found_rows $fields"; 488 $this->sql_clauses['from'] = "FROM $wpdb->site $join"; 489 $this->sql_clauses['groupby'] = $groupby; 490 $this->sql_clauses['orderby'] = $orderby; 491 $this->sql_clauses['limits'] = $limits; 492 493 // Beginning of the string is on a new line to prevent leading whitespace. See https://core.trac.wordpress.org/ticket/56841. 494 $this->request = 495 "{$this->sql_clauses['select']} 496 {$this->sql_clauses['from']} 497 {$where} 498 {$this->sql_clauses['groupby']} 499 {$this->sql_clauses['orderby']} 500 {$this->sql_clauses['limits']}"; 501 502 if ( $this->query_vars['count'] ) { 503 return (int) $wpdb->get_var( $this->request ); 504 } 505 506 $network_ids = $wpdb->get_col( $this->request ); 507 508 return array_map( 'intval', $network_ids ); 509 } 510 511 /** 512 * Populates found_networks and max_num_pages properties for the current query 513 * if the limit clause was used. 514 * 515 * @since 4.6.0 516 * 517 * @global wpdb $wpdb WordPress database abstraction object. 518 */ 519 private function set_found_networks() { 520 global $wpdb; 521 522 if ( $this->query_vars['number'] && ! $this->query_vars['no_found_rows'] ) { 523 /** 524 * Filters the query used to retrieve found network count. 525 * 526 * @since 4.6.0 527 * 528 * @param string $found_networks_query SQL query. Default 'SELECT FOUND_ROWS()'. 529 * @param WP_Network_Query $network_query The `WP_Network_Query` instance. 530 */ 531 $found_networks_query = apply_filters( 'found_networks_query', 'SELECT FOUND_ROWS()', $this ); 532 533 $this->found_networks = (int) $wpdb->get_var( $found_networks_query ); 534 } 535 } 536 537 /** 538 * Used internally to generate an SQL string for searching across multiple columns. 539 * 540 * @since 4.6.0 541 * 542 * @global wpdb $wpdb WordPress database abstraction object. 543 * 544 * @param string $search Search string. 545 * @param string[] $columns Array of columns to search. 546 * @return string Search SQL. 547 */ 548 protected function get_search_sql( $search, $columns ) { 549 global $wpdb; 550 551 $like = '%' . $wpdb->esc_like( $search ) . '%'; 552 553 $searches = array(); 554 foreach ( $columns as $column ) { 555 $searches[] = $wpdb->prepare( "$column LIKE %s", $like ); 556 } 557 558 return '(' . implode( ' OR ', $searches ) . ')'; 559 } 560 561 /** 562 * Parses and sanitizes 'orderby' keys passed to the network query. 563 * 564 * @since 4.6.0 565 * 566 * @global wpdb $wpdb WordPress database abstraction object. 567 * 568 * @param string $orderby Alias for the field to order by. 569 * @return string|false Value to used in the ORDER clause. False otherwise. 570 */ 571 protected function parse_orderby( $orderby ) { 572 global $wpdb; 573 574 $allowed_keys = array( 575 'id', 576 'domain', 577 'path', 578 ); 579 580 $parsed = false; 581 if ( 'network__in' === $orderby ) { 582 $network__in = implode( ',', array_map( 'absint', $this->query_vars['network__in'] ) ); 583 $parsed = "FIELD( {$wpdb->site}.id, $network__in )"; 584 } elseif ( 'domain_length' === $orderby || 'path_length' === $orderby ) { 585 $field = substr( $orderby, 0, -7 ); 586 $parsed = "CHAR_LENGTH($wpdb->site.$field)"; 587 } elseif ( in_array( $orderby, $allowed_keys, true ) ) { 588 $parsed = "$wpdb->site.$orderby"; 589 } 590 591 return $parsed; 592 } 593 594 /** 595 * Parses an 'order' query variable and cast it to 'ASC' or 'DESC' as necessary. 596 * 597 * @since 4.6.0 598 * 599 * @param string $order The 'order' query variable. 600 * @return string The sanitized 'order' query variable. 601 */ 602 protected function parse_order( $order ) { 603 if ( ! is_string( $order ) || empty( $order ) ) { 604 return 'ASC'; 605 } 606 607 if ( 'ASC' === strtoupper( $order ) ) { 608 return 'ASC'; 609 } else { 610 return 'DESC'; 611 } 612 } 613 }
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