/** * Meta API: WP_Meta_Query class * * @package WordPress * @subpackage Meta * @since 4.4.0 */ /** * Core class used to implement meta queries for the Meta API. * * Used for generating SQL clauses that filter a primary query according to metadata keys and values. * * WP_Meta_Query is a helper that allows primary query classes, such as WP_Query and WP_User_Query, * * to filter their results by object metadata, by generating `JOIN` and `WHERE` subclauses to be attached * to the primary SQL query string. * * @since 3.2.0 */ #[AllowDynamicProperties] class WP_Meta_Query { /** * Array of metadata queries. * * See WP_Meta_Query::__construct() for information on meta query arguments. * * @since 3.2.0 * @var array */ public $queries = array(); /** * The relation between the queries. Can be one of 'AND' or 'OR'. * * @since 3.2.0 * @var string */ public $relation; /** * Database table to query for the metadata. * * @since 4.1.0 * @var string */ public $meta_table; /** * Column in meta_table that represents the ID of the object the metadata belongs to. * * @since 4.1.0 * @var string */ public $meta_id_column; /** * Database table that where the metadata's objects are stored (eg $wpdb->users). * * @since 4.1.0 * @var string */ public $primary_table; /** * Column in primary_table that represents the ID of the object. * * @since 4.1.0 * @var string */ public $primary_id_column; /** * A flat list of table aliases used in JOIN clauses. * * @since 4.1.0 * @var array */ protected $table_aliases = array(); /** * A flat list of clauses, keyed by clause 'name'. * * @since 4.2.0 * @var array */ protected $clauses = array(); /** * Whether the query contains any OR relations. * * @since 4.3.0 * @var bool */ protected $has_or_relation = false; /** * Constructor. * * @since 3.2.0 * @since 4.2.0 Introduced support for naming query clauses by associative array keys. * @since 5.1.0 Introduced `$compare_key` clause parameter, which enables LIKE key matches. * @since 5.3.0 Increased the number of operators available to `$compare_key`. Introduced `$type_key`, * which enables the `$key` to be cast to a new data type for comparisons. * * @param array $meta_query { * Array of meta query clauses. When first-order clauses or sub-clauses use strings as * their array keys, they may be referenced in the 'orderby' parameter of the parent query. * * @type string $relation Optional. The MySQL keyword used to join the clauses of the query. * Accepts 'AND' or 'OR'. Default 'AND'. * @type array ...$0 { * Optional. An array of first-order clause parameters, or another fully-formed meta query. * * @type string|string[] $key Meta key or keys to filter by. * @type string $compare_key MySQL operator used for comparing the $key. Accepts: * - '=' * - '!=' * - 'LIKE' * - 'NOT LIKE' * - 'IN' * - 'NOT IN' * - 'REGEXP' * - 'NOT REGEXP' * - 'RLIKE' * - 'EXISTS' (alias of '=') * - 'NOT EXISTS' (alias of '!=') * Default is 'IN' when `$key` is an array, '=' otherwise. * @type string $type_key MySQL data type that the meta_key column will be CAST to for * comparisons. Accepts 'BINARY' for case-sensitive regular expression * comparisons. Default is ''. * @type string|string[] $value Meta value or values to filter by. * @type string $compare MySQL operator used for comparing the $value. Accepts: * - '=' * - '!=' * - '>' * - '>=' * - '<' * - '<=' * - 'LIKE' * - 'NOT LIKE' * - 'IN' * - 'NOT IN' * - 'BETWEEN' * - 'NOT BETWEEN' * - 'REGEXP' * - 'NOT REGEXP' * - 'RLIKE' * - 'EXISTS' * - 'NOT EXISTS' * Default is 'IN' when `$value` is an array, '=' otherwise. * @type string $type MySQL data type that the meta_value column will be CAST to for * comparisons. Accepts: * - 'NUMERIC' * - 'BINARY' * - 'CHAR' * - 'DATE' * - 'DATETIME' * - 'DECIMAL' * - 'SIGNED' * - 'TIME' * - 'UNSIGNED' * Default is 'CHAR'. * } * } */ public function __construct( $meta_query = false ) { if ( ! $meta_query ) { return; } if ( isset( $meta_query['relation'] ) && 'OR' === strtoupper( $meta_query['relation'] ) ) { $this->relation = 'OR'; } else { $this->relation = 'AND'; } $this->queries = $this->sanitize_query( $meta_query ); } /** * Ensures the 'meta_query' argument passed to the class constructor is well-formed. * * Eliminates empty items and ensures that a 'relation' is set. * * @since 4.1.0 * * @param array $queries Array of query clauses. * @return array Sanitized array of query clauses. */ public function sanitize_query( $queries ) { $clean_queries = array(); if ( ! is_array( $queries ) ) { return $clean_queries; } foreach ( $queries as $key => $query ) { if ( 'relation' === $key ) { $relation = $query; } elseif ( ! is_array( $query ) ) { continue; // First-order clause. } elseif ( $this->is_first_order_clause( $query ) ) { if ( isset( $query['value'] ) && array() === $query['value'] ) { unset( $query['value'] ); } $clean_queries[ $key ] = $query; // Otherwise, it's a nested query, so we recurse. } else { $cleaned_query = $this->sanitize_query( $query ); if ( ! empty( $cleaned_query ) ) { $clean_queries[ $key ] = $cleaned_query; } } } if ( empty( $clean_queries ) ) { return $clean_queries; } // Sanitize the 'relation' key provided in the query. if ( isset( $relation ) && 'OR' === strtoupper( $relation ) ) { $clean_queries['relation'] = 'OR'; $this->has_or_relation = true; /* * If there is only a single clause, call the relation 'OR'. * This value will not actually be used to join clauses, but it * simplifies the logic around combining key-only queries. */ } elseif ( 1 === count( $clean_queries ) ) { $clean_queries['relation'] = 'OR'; // Default to AND. } else { $clean_queries['relation'] = 'AND'; } return $clean_queries; } /** * Determines whether a query clause is first-order. * * A first-order meta query clause is one that has either a 'key' or * a 'value' array key. * * @since 4.1.0 * * @param array $query Meta query arguments. * @return bool Whether the query clause is a first-order clause. */ protected function is_first_order_clause( $query ) { return isset( $query['key'] ) || isset( $query['value'] ); } /** * Constructs a meta query based on 'meta_*' query vars * * @since 3.2.0 * * @param array $qv The query variables. */ public function parse_query_vars( $qv ) { $meta_query = array(); /* * For orderby=meta_value to work correctly, simple query needs to be * first (so that its table join is against an unaliased meta table) and * needs to be its own clause (so it doesn't interfere with the logic of * the rest of the meta_query). */ $primary_meta_query = array(); foreach ( array( 'key', 'compare', 'type', 'compare_key', 'type_key' ) as $key ) { if ( ! empty( $qv[ "meta_$key" ] ) ) { $primary_meta_query[ $key ] = $qv[ "meta_$key" ]; } } // WP_Query sets 'meta_value' = '' by default. if ( isset( $qv['meta_value'] ) && '' !== $qv['meta_value'] && ( ! is_array( $qv['meta_value'] ) || $qv['meta_value'] ) ) { $primary_meta_query['value'] = $qv['meta_value']; } $existing_meta_query = isset( $qv['meta_query'] ) && is_array( $qv['meta_query'] ) ? $qv['meta_query'] : array(); if ( ! empty( $primary_meta_query ) && ! empty( $existing_meta_query ) ) { $meta_query = array( 'relation' => 'AND', $primary_meta_query, $existing_meta_query, ); } elseif ( ! empty( $primary_meta_query ) ) { $meta_query = array( $primary_meta_query, ); } elseif ( ! empty( $existing_meta_query ) ) { $meta_query = $existing_meta_query; } $this->__construct( $meta_query ); } /** * Returns the appropriate alias for the given meta type if applicable. * * @since 3.7.0 * * @param string $type MySQL type to cast meta_value. * @return string MySQL type. */ public function get_cast_for_type( $type = '' ) { if ( empty( $type ) ) { return 'CHAR'; } $meta_type = strtoupper( $type ); if ( ! preg_match( '/^(?:BINARY|CHAR|DATE|DATETIME|SIGNED|UNSIGNED|TIME|NUMERIC(?:\(\d+(?:,\s?\d+)?\))?|DECIMAL(?:\(\d+(?:,\s?\d+)?\))?)$/', $meta_type ) ) { return 'CHAR'; } if ( 'NUMERIC' === $meta_type ) { $meta_type = 'SIGNED'; } return $meta_type; } /** * Generates SQL clauses to be appended to a main query. * * @since 3.2.0 * * @param string $type Type of meta. Possible values include but are not limited * to 'post', 'comment', 'blog', 'term', and 'user'. * @param string $primary_table Database table where the object being filtered is stored (eg wp_users). * @param string $primary_id_column ID column for the filtered object in $primary_table. * @param object $context Optional. The main query object that corresponds to the type, for * example a `WP_Query`, `WP_User_Query`, or `WP_Site_Query`. * Default null. * @return string[]|false { * Array containing JOIN and WHERE SQL clauses to append to the main query, * or false if no table exists for the requested meta type. * * @type string $join SQL fragment to append to the main JOIN clause. * @type string $where SQL fragment to append to the main WHERE clause. * } */ public function get_sql( $type, $primary_table, $primary_id_column, $context = null ) { $meta_table = _get_meta_table( $type ); if ( ! $meta_table ) { return false; } $this->table_aliases = array(); $this->meta_table = $meta_table; $this->meta_id_column = sanitize_key( $type . '_id' ); $this->primary_table = $primary_table; $this->primary_id_column = $primary_id_column; $sql = $this->get_sql_clauses(); /* * If any JOINs are LEFT JOINs (as in the case of NOT EXISTS), then all JOINs should * be LEFT. Otherwise posts with no metadata will be excluded from results. */ if ( str_contains( $sql['join'], 'LEFT JOIN' ) ) { $sql['join'] = str_replace( 'INNER JOIN', 'LEFT JOIN', $sql['join'] ); } /** * Filters the meta query's generated SQL. * * @since 3.1.0 * * @param string[] $sql Array containing the query's JOIN and WHERE clauses. * @param array $queries Array of meta queries. * @param string $type Type of meta. Possible values include but are not limited * to 'post', 'comment', 'blog', 'term', and 'user'. * @param string $primary_table Primary table. * @param string $primary_id_column Primary column ID. * @param object $context The main query object that corresponds to the type, for * example a `WP_Query`, `WP_User_Query`, or `WP_Site_Query`. */ return apply_filters_ref_array( 'get_meta_sql', array( $sql, $this->queries, $type, $primary_table, $primary_id_column, $context ) ); } /** * Generates SQL clauses to be appended to a main query. * * Called by the public WP_Meta_Query::get_sql(), this method is abstracted * out to maintain parity with the other Query classes. * * @since 4.1.0 * * @return string[] { * Array containing JOIN and WHERE SQL clauses to append to the main query. * * @type string $join SQL fragment to append to the main JOIN clause. * @type string $where SQL fragment to append to the main WHERE clause. * } */ protected function get_sql_clauses() { /* * $queries are passed by reference to get_sql_for_query() for recursion. * To keep $this->queries unaltered, pass a copy. */ $queries = $this->queries; $sql = $this->get_sql_for_query( $queries ); if ( ! empty( $sql['where'] ) ) { $sql['where'] = ' AND ' . $sql['where']; } return $sql; } /** * Generates SQL clauses for a single query array. * * If nested subqueries are found, this method recurses the tree to * produce the properly nested SQL. * * @since 4.1.0 * * @param array $query Query to parse (passed by reference). * @param int $depth Optional. Number of tree levels deep we currently are. * Used to calculate indentation. Default 0. * @return string[] { * Array containing JOIN and WHERE SQL clauses to append to a single query array. * * @type string $join SQL fragment to append to the main JOIN clause. * @type string $where SQL fragment to append to the main WHERE clause. * } */ protected function get_sql_for_query( &$query, $depth = 0 ) { $sql_chunks = array( 'join' => array(), 'where' => array(), ); $sql = array( 'join' => '', 'where' => '', ); $indent = ''; for ( $i = 0; $i < $depth; $i++ ) { $indent .= ' '; } foreach ( $query as $key => &$clause ) { if ( 'relation' === $key ) { $relation = $query['relation']; } elseif ( is_array( $clause ) ) { // This is a first-order clause. if ( $this->is_first_order_clause( $clause ) ) { $clause_sql = $this->get_sql_for_clause( $clause, $query, $key ); $where_count = count( $clause_sql['where'] ); if ( ! $where_count ) { $sql_chunks['where'][] = ''; } elseif ( 1 === $where_count ) { $sql_chunks['where'][] = $clause_sql['where'][0]; } else { $sql_chunks['where'][] = '( ' . implode( ' AND ', $clause_sql['where'] ) . ' )'; } $sql_chunks['join'] = array_merge( $sql_chunks['join'], $clause_sql['join'] ); // This is a subquery, so we recurse. } else { $clause_sql = $this->get_sql_for_query( $clause, $depth + 1 ); $sql_chunks['where'][] = $clause_sql['where']; $sql_chunks['join'][] = $clause_sql['join']; } } } // Filter to remove empties. $sql_chunks['join'] = array_filter( $sql_chunks['join'] ); $sql_chunks['where'] = array_filter( $sql_chunks['where'] ); if ( empty( $relation ) ) { $relation = 'AND'; } // Filter duplicate JOIN clauses and combine into a single string. if ( ! empty( $sql_chunks['join'] ) ) { $sql['join'] = implode( ' ', array_unique( $sql_chunks['join'] ) ); } // Generate a single WHERE clause with proper brackets and indentation. if ( ! empty( $sql_chunks['where'] ) ) { $sql['where'] = '( ' . "\n " . $indent . implode( ' ' . "\n " . $indent . $relation . ' ' . "\n " . $indent, $sql_chunks['where'] ) . "\n" . $indent . ')'; } return $sql; } /** * Generates SQL JOIN and WHERE clauses for a first-order query clause. * * "First-order" means that it's an array with a 'key' or 'value'. * * @since 4.1.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param array $clause Query clause (passed by reference). * @param array $parent_query Parent query array. * @param string $clause_key Optional. The array key used to name the clause in the original `$meta_query` * parameters. If not provided, a key will be generated automatically. * Default empty string. * @return array { * Array containing JOIN and WHERE SQL clauses to append to a first-order query. * * @type string[] $join Array of SQL fragments to append to the main JOIN clause. * @type string[] $where Array of SQL fragments to append to the main WHERE clause. * } */ public function get_sql_for_clause( &$clause, $parent_query, $clause_key = '' ) { global $wpdb; $sql_chunks = array( 'where' => array(), 'join' => array(), ); if ( isset( $clause['compare'] ) ) { $clause['compare'] = strtoupper( $clause['compare'] ); } else { $clause['compare'] = isset( $clause['value'] ) && is_array( $clause['value'] ) ? 'IN' : '='; } $non_numeric_operators = array( '=', '!=', 'LIKE', 'NOT LIKE', 'IN', 'NOT IN', 'EXISTS', 'NOT EXISTS', 'RLIKE', 'REGEXP', 'NOT REGEXP', ); $numeric_operators = array( '>', '>=', '<', '<=', 'BETWEEN', 'NOT BETWEEN', ); if ( ! in_array( $clause['compare'], $non_numeric_operators, true ) && ! in_array( $clause['compare'], $numeric_operators, true ) ) { $clause['compare'] = '='; } if ( isset( $clause['compare_key'] ) ) { $clause['compare_key'] = strtoupper( $clause['compare_key'] ); } else { $clause['compare_key'] = isset( $clause['key'] ) && is_array( $clause['key'] ) ? 'IN' : '='; } if ( ! in_array( $clause['compare_key'], $non_numeric_operators, true ) ) { $clause['compare_key'] = '='; } $meta_compare = $clause['compare']; $meta_compare_key = $clause['compare_key']; // First build the JOIN clause, if one is required. $join = ''; // We prefer to avoid joins if possible. Look for an existing join compatible with this clause. $alias = $this->find_compatible_table_alias( $clause, $parent_query ); if ( false === $alias ) { $i = count( $this->table_aliases ); $alias = $i ? 'mt' . $i : $this->meta_table; // JOIN clauses for NOT EXISTS have their own syntax. if ( 'NOT EXISTS' === $meta_compare ) { $join .= " LEFT JOIN $this->meta_table"; $join .= $i ? " AS $alias" : ''; if ( 'LIKE' === $meta_compare_key ) { $join .= $wpdb->prepare( " ON ( $this->primary_table.$this->primary_id_column = $alias.$this->meta_id_column AND $alias.meta_key LIKE %s )", '%' . $wpdb->esc_like( $clause['key'] ) . '%' ); } else { $join .= $wpdb->prepare( " ON ( $this->primary_table.$this->primary_id_column = $alias.$this->meta_id_column AND $alias.meta_key = %s )", $clause['key'] ); } // All other JOIN clauses. } else { $join .= " INNER JOIN $this->meta_table"; $join .= $i ? " AS $alias" : ''; $join .= " ON ( $this->primary_table.$this->primary_id_column = $alias.$this->meta_id_column )"; } $this->table_aliases[] = $alias; $sql_chunks['join'][] = $join; } // Save the alias to this clause, for future siblings to find. $clause['alias'] = $alias; // Determine the data type. $_meta_type = isset( $clause['type'] ) ? $clause['type'] : ''; $meta_type = $this->get_cast_for_type( $_meta_type ); $clause['cast'] = $meta_type; // Fallback for clause keys is the table alias. Key must be a string. if ( is_int( $clause_key ) || ! $clause_key ) { $clause_key = $clause['alias']; } // Ensure unique clause keys, so none are overwritten. $iterator = 1; $clause_key_base = $clause_key; while ( isset( $this->clauses[ $clause_key ] ) ) { $clause_key = $clause_key_base . '-' . $iterator; ++$iterator; } // Store the clause in our flat array. $this->clauses[ $clause_key ] =& $clause; // Next, build the WHERE clause. // meta_key. if ( array_key_exists( 'key', $clause ) ) { if ( 'NOT EXISTS' === $meta_compare ) { $sql_chunks['where'][] = $alias . '.' . $this->meta_id_column . ' IS NULL'; } else { /** * In joined clauses negative operators have to be nested into a * NOT EXISTS clause and flipped, to avoid returning records with * matching post IDs but different meta keys. Here we prepare the * nested clause. */ if ( in_array( $meta_compare_key, array( '!=', 'NOT IN', 'NOT LIKE', 'NOT EXISTS', 'NOT REGEXP' ), true ) ) { // Negative clauses may be reused. $i = count( $this->table_aliases ); $subquery_alias = $i ? 'mt' . $i : $this->meta_table; $this->table_aliases[] = $subquery_alias; $meta_compare_string_start = 'NOT EXISTS ('; $meta_compare_string_start .= "SELECT 1 FROM $wpdb->postmeta $subquery_alias "; $meta_compare_string_start .= "WHERE $subquery_alias.post_ID = $alias.post_ID "; $meta_compare_string_end = 'LIMIT 1'; $meta_compare_string_end .= ')'; } switch ( $meta_compare_key ) { case '=': case 'EXISTS': $where = $wpdb->prepare( "$alias.meta_key = %s", trim( $clause['key'] ) ); // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared break; case 'LIKE': $meta_compare_value = '%' . $wpdb->esc_like( trim( $clause['key'] ) ) . '%'; $where = $wpdb->prepare( "$alias.meta_key LIKE %s", $meta_compare_value ); // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared break; case 'IN': $meta_compare_string = "$alias.meta_key IN (" . substr( str_repeat( ',%s', count( $clause['key'] ) ), 1 ) . ')'; $where = $wpdb->prepare( $meta_compare_string, $clause['key'] ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared break; case 'RLIKE': case 'REGEXP': $operator = $meta_compare_key; if ( isset( $clause['type_key'] ) && 'BINARY' === strtoupper( $clause['type_key'] ) ) { $cast = 'BINARY'; $meta_key = "CAST($alias.meta_key AS BINARY)"; } else { $cast = ''; $meta_key = "$alias.meta_key"; } $where = $wpdb->prepare( "$meta_key $operator $cast %s", trim( $clause['key'] ) ); // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared break; case '!=': case 'NOT EXISTS': $meta_compare_string = $meta_compare_string_start . "AND $subquery_alias.meta_key = %s " . $meta_compare_string_end; $where = $wpdb->prepare( $meta_compare_string, $clause['key'] ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared break; case 'NOT LIKE': $meta_compare_string = $meta_compare_string_start . "AND $subquery_alias.meta_key LIKE %s " . $meta_compare_string_end; $meta_compare_value = '%' . $wpdb->esc_like( trim( $clause['key'] ) ) . '%'; $where = $wpdb->prepare( $meta_compare_string, $meta_compare_value ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared break; case 'NOT IN': $array_subclause = '(' . substr( str_repeat( ',%s', count( $clause['key'] ) ), 1 ) . ') '; $meta_compare_string = $meta_compare_string_start . "AND $subquery_alias.meta_key IN " . $array_subclause . $meta_compare_string_end; $where = $wpdb->prepare( $meta_compare_string, $clause['key'] ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared break; case 'NOT REGEXP': $operator = $meta_compare_key; if ( isset( $clause['type_key'] ) && 'BINARY' === strtoupper( $clause['type_key'] ) ) { $cast = 'BINARY'; $meta_key = "CAST($subquery_alias.meta_key AS BINARY)"; } else { $cast = ''; $meta_key = "$subquery_alias.meta_key"; } $meta_compare_string = $meta_compare_string_start . "AND $meta_key REGEXP $cast %s " . $meta_compare_string_end; $where = $wpdb->prepare( $meta_compare_string, $clause['key'] ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared break; } $sql_chunks['where'][] = $where; } } // meta_value. if ( array_key_exists( 'value', $clause ) ) { $meta_value = $clause['value']; if ( in_array( $meta_compare, array( 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN' ), true ) ) { if ( ! is_array( $meta_value ) ) { $meta_value = preg_split( '/[,\s]+/', $meta_value ); } } elseif ( is_string( $meta_value ) ) { $meta_value = trim( $meta_value ); } switch ( $meta_compare ) { case 'IN': case 'NOT IN': $meta_compare_string = '(' . substr( str_repeat( ',%s', count( $meta_value ) ), 1 ) . ')'; $where = $wpdb->prepare( $meta_compare_string, $meta_value ); break; case 'BETWEEN': case 'NOT BETWEEN': $where = $wpdb->prepare( '%s AND %s', $meta_value[0], $meta_value[1] ); break; case 'LIKE': case 'NOT LIKE': $meta_value = '%' . $wpdb->esc_like( $meta_value ) . '%'; $where = $wpdb->prepare( '%s', $meta_value ); break; // EXISTS with a value is interpreted as '='. case 'EXISTS': $meta_compare = '='; $where = $wpdb->prepare( '%s', $meta_value ); break; // 'value' is ignored for NOT EXISTS. case 'NOT EXISTS': $where = ''; break; default: $where = $wpdb->prepare( '%s', $meta_value ); break; } if ( $where ) { if ( 'CHAR' === $meta_type ) { $sql_chunks['where'][] = "$alias.meta_value {$meta_compare} {$where}"; } else { $sql_chunks['where'][] = "CAST($alias.meta_value AS {$meta_type}) {$meta_compare} {$where}"; } } } /* * Multiple WHERE clauses (for meta_key and meta_value) should * be joined in parentheses. */ if ( 1 < count( $sql_chunks['where'] ) ) { $sql_chunks['where'] = array( '( ' . implode( ' AND ', $sql_chunks['where'] ) . ' )' ); } return $sql_chunks; } /** * Gets a flattened list of sanitized meta clauses. * * This array should be used for clause lookup, as when the table alias and CAST type must be determined for * a value of 'orderby' corresponding to a meta clause. * * @since 4.2.0 * * @return array Meta clauses. */ public function get_clauses() { return $this->clauses; } /** * Identifies an existing table alias that is compatible with the current * query clause. * * We avoid unnecessary table joins by allowing each clause to look for * an existing table alias that is compatible with the query that it * needs to perform. * * An existing alias is compatible if (a) it is a sibling of `$clause` * (ie, it's under the scope of the same relation), and (b) the combination * of operator and relation between the clauses allows for a shared table join. * In the case of WP_Meta_Query, this only applies to 'IN' clauses that are * connected by the relation 'OR'. * * @since 4.1.0 * * @param array $clause Query clause. * @param array $parent_query Parent query of $clause. * @return string|false Table alias if found, otherwise false. */ protected function find_compatible_table_alias( $clause, $parent_query ) { $alias = false; foreach ( $parent_query as $sibling ) { // If the sibling has no alias yet, there's nothing to check. if ( empty( $sibling['alias'] ) ) { continue; } // We're only interested in siblings that are first-order clauses. if ( ! is_array( $sibling ) || ! $this->is_first_order_clause( $sibling ) ) { continue; } $compatible_compares = array(); // Clauses connected by OR can share joins as long as they have "positive" operators. if ( 'OR' === $parent_query['relation'] ) { $compatible_compares = array( '=', 'IN', 'BETWEEN', 'LIKE', 'REGEXP', 'RLIKE', '>', '>=', '<', '<=' ); // Clauses joined by AND with "negative" operators share a join only if they also share a key. } elseif ( isset( $sibling['key'] ) && isset( $clause['key'] ) && $sibling['key'] === $clause['key'] ) { $compatible_compares = array( '!=', 'NOT IN', 'NOT LIKE' ); } $clause_compare = strtoupper( $clause['compare'] ); $sibling_compare = strtoupper( $sibling['compare'] ); if ( in_array( $clause_compare, $compatible_compares, true ) && in_array( $sibling_compare, $compatible_compares, true ) ) { $alias = preg_replace( '/\W/', '_', $sibling['alias'] ); break; } } /** * Filters the table alias identified as compatible with the current clause. * * @since 4.1.0 * * @param string|false $alias Table alias, or false if none was found. * @param array $clause First-order query clause. * @param array $parent_query Parent of $clause. * @param WP_Meta_Query $query WP_Meta_Query object. */ return apply_filters( 'meta_query_find_compatible_table_alias', $alias, $clause, $parent_query, $this ); } /** * Checks whether the current query has any OR relations. * * In some cases, the presence of an OR relation somewhere in the query will require * the use of a `DISTINCT` or `GROUP BY` keyword in the `SELECT` clause. The current * method can be used in these cases to determine whether such a clause is necessary. * * @since 4.3.0 * * @return bool True if the query contains any `OR` relations, otherwise false. */ public function has_or_relation() { return $this->has_or_relation; } } /** * WordPress Error API. * * @package WordPress */ /** * WordPress Error class. * * Container for checking for WordPress errors and error messages. Return * WP_Error and use is_wp_error() to check if this class is returned. Many * core WordPress functions pass this class in the event of an error and * if not handled properly will result in code errors. * * @since 2.1.0 */ #[AllowDynamicProperties] class WP_Error { /** * Stores the list of errors. * * @since 2.1.0 * @var array */ public $errors = array(); /** * Stores the most recently added data for each error code. * * @since 2.1.0 * @var array */ public $error_data = array(); /** * Stores previously added data added for error codes, oldest-to-newest by code. * * @since 5.6.0 * @var array[] */ protected $additional_data = array(); /** * Initializes the error. * * If `$code` is empty, the other parameters will be ignored. * When `$code` is not empty, `$message` will be used even if * it is empty. The `$data` parameter will be used only if it * is not empty. * * Though the class is constructed with a single error code and * message, multiple codes can be added using the `add()` method. * * @since 2.1.0 * * @param string|int $code Error code. * @param string $message Error message. * @param mixed $data Optional. Error data. Default empty string. */ public function __construct( $code = '', $message = '', $data = '' ) { if ( empty( $code ) ) { return; } $this->add( $code, $message, $data ); } /** * Retrieves all error codes. * * @since 2.1.0 * * @return array List of error codes, if available. */ public function get_error_codes() { if ( ! $this->has_errors() ) { return array(); } return array_keys( $this->errors ); } /** * Retrieves the first error code available. * * @since 2.1.0 * * @return string|int Empty string, if no error codes. */ public function get_error_code() { $codes = $this->get_error_codes(); if ( empty( $codes ) ) { return ''; } return $codes[0]; } /** * Retrieves all error messages, or the error messages for the given error code. * * @since 2.1.0 * * @param string|int $code Optional. Error code to retrieve the messages for. * Default empty string. * @return string[] Error strings on success, or empty array if there are none. */ public function get_error_messages( $code = '' ) { // Return all messages if no code specified. if ( empty( $code ) ) { $all_messages = array(); foreach ( (array) $this->errors as $code => $messages ) { $all_messages = array_merge( $all_messages, $messages ); } return $all_messages; } if ( isset( $this->errors[ $code ] ) ) { return $this->errors[ $code ]; } else { return array(); } } /** * Gets a single error message. * * This will get the first message available for the code. If no code is * given then the first code available will be used. * * @since 2.1.0 * * @param string|int $code Optional. Error code to retrieve the message for. * Default empty string. * @return string The error message. */ public function get_error_message( $code = '' ) { if ( empty( $code ) ) { $code = $this->get_error_code(); } $messages = $this->get_error_messages( $code ); if ( empty( $messages ) ) { return ''; } return $messages[0]; } /** * Retrieves the most recently added error data for an error code. * * @since 2.1.0 * * @param string|int $code Optional. Error code. Default empty string. * @return mixed Error data, if it exists. */ public function get_error_data( $code = '' ) { if ( empty( $code ) ) { $code = $this->get_error_code(); } if ( isset( $this->error_data[ $code ] ) ) { return $this->error_data[ $code ]; } } /** * Verifies if the instance contains errors. * * @since 5.1.0 * * @return bool If the instance contains errors. */ public function has_errors() { if ( ! empty( $this->errors ) ) { return true; } return false; } /** * Adds an error or appends an additional message to an existing error. * * @since 2.1.0 * * @param string|int $code Error code. * @param string $message Error message. * @param mixed $data Optional. Error data. Default empty string. */ public function add( $code, $message, $data = '' ) { $this->errors[ $code ][] = $message; if ( ! empty( $data ) ) { $this->add_data( $data, $code ); } /** * Fires when an error is added to a WP_Error object. * * @since 5.6.0 * * @param string|int $code Error code. * @param string $message Error message. * @param mixed $data Error data. Might be empty. * @param WP_Error $wp_error The WP_Error object. */ do_action( 'wp_error_added', $code, $message, $data, $this ); } /** * Adds data to an error with the given code. * * @since 2.1.0 * @since 5.6.0 Errors can now contain more than one item of error data. {@see WP_Error::$additional_data}. * * @param mixed $data Error data. * @param string|int $code Error code. */ public function add_data( $data, $code = '' ) { if ( empty( $code ) ) { $code = $this->get_error_code(); } if ( isset( $this->error_data[ $code ] ) ) { $this->additional_data[ $code ][] = $this->error_data[ $code ]; } $this->error_data[ $code ] = $data; } /** * Retrieves all error data for an error code in the order in which the data was added. * * @since 5.6.0 * * @param string|int $code Error code. * @return mixed[] Array of error data, if it exists. */ public function get_all_error_data( $code = '' ) { if ( empty( $code ) ) { $code = $this->get_error_code(); } $data = array(); if ( isset( $this->additional_data[ $code ] ) ) { $data = $this->additional_data[ $code ]; } if ( isset( $this->error_data[ $code ] ) ) { $data[] = $this->error_data[ $code ]; } return $data; } /** * Removes the specified error. * * This function removes all error messages associated with the specified * error code, along with any error data for that code. * * @since 4.1.0 * * @param string|int $code Error code. */ public function remove( $code ) { unset( $this->errors[ $code ] ); unset( $this->error_data[ $code ] ); unset( $this->additional_data[ $code ] ); } /** * Merges the errors in the given error object into this one. * * @since 5.6.0 * * @param WP_Error $error Error object to merge. */ public function merge_from( WP_Error $error ) { static::copy_errors( $error, $this ); } /** * Exports the errors in this object into the given one. * * @since 5.6.0 * * @param WP_Error $error Error object to export into. */ public function export_to( WP_Error $error ) { static::copy_errors( $this, $error ); } /** * Copies errors from one WP_Error instance to another. * * @since 5.6.0 * * @param WP_Error $from The WP_Error to copy from. * @param WP_Error $to The WP_Error to copy to. */ protected static function copy_errors( WP_Error $from, WP_Error $to ) { foreach ( $from->get_error_codes() as $code ) { foreach ( $from->get_error_messages( $code ) as $error_message ) { $to->add( $code, $error_message ); } foreach ( $from->get_all_error_data( $code ) as $data ) { $to->add_data( $data, $code ); } } } } /** * Contains Translation_Entry class * * @version $Id: entry.php 1157 2015-11-20 04:30:11Z dd32 $ * @package pomo * @subpackage entry */ if ( ! class_exists( 'Translation_Entry', false ) ) : /** * Translation_Entry class encapsulates a translatable string. * * @since 2.8.0 */ #[AllowDynamicProperties] class Translation_Entry { /** * Whether the entry contains a string and its plural form, default is false. * * @var bool */ public $is_plural = false; public $context = null; public $singular = null; public $plural = null; public $translations = array(); public $translator_comments = ''; public $extracted_comments = ''; public $references = array(); public $flags = array(); /** * @param array $args { * Arguments array, supports the following keys: * * @type string $singular The string to translate, if omitted an * empty entry will be created. * @type string $plural The plural form of the string, setting * this will set `$is_plural` to true. * @type array $translations Translations of the string and possibly * its plural forms. * @type string $context A string differentiating two equal strings * used in different contexts. * @type string $translator_comments Comments left by translators. * @type string $extracted_comments Comments left by developers. * @type array $references Places in the code this string is used, in * relative_to_root_path/file.php:linenum form. * @type array $flags Flags like php-format. * } */ public function __construct( $args = array() ) { // If no singular -- empty object. if ( ! isset( $args['singular'] ) ) { return; } // Get member variable values from args hash. foreach ( $args as $varname => $value ) { $this->$varname = $value; } if ( isset( $args['plural'] ) && $args['plural'] ) { $this->is_plural = true; } if ( ! is_array( $this->translations ) ) { $this->translations = array(); } if ( ! is_array( $this->references ) ) { $this->references = array(); } if ( ! is_array( $this->flags ) ) { $this->flags = array(); } } /** * PHP4 constructor. * * @since 2.8.0 * @deprecated 5.4.0 Use __construct() instead. * * @see Translation_Entry::__construct() */ public function Translation_Entry( $args = array() ) { _deprecated_constructor( self::class, '5.4.0', static::class ); self::__construct( $args ); } /** * Generates a unique key for this entry. * * @since 2.8.0 * * @return string|false The key or false if the entry is null. */ public function key() { if ( null === $this->singular ) { return false; } // Prepend context and EOT, like in MO files. $key = ! $this->context ? $this->singular : $this->context . "\4" . $this->singular; // Standardize on \n line endings. $key = str_replace( array( "\r\n", "\r" ), "\n", $key ); return $key; } /** * Merges another translation entry with the current one. * * @since 2.8.0 * * @param Translation_Entry $other Other translation entry. */ public function merge_with( &$other ) { $this->flags = array_unique( array_merge( $this->flags, $other->flags ) ); $this->references = array_unique( array_merge( $this->references, $other->references ) ); if ( $this->extracted_comments !== $other->extracted_comments ) { $this->extracted_comments .= $other->extracted_comments; } } } endif; /** * Object Cache API * * @link https://developer.wordpress.org/reference/classes/wp_object_cache/ * * @package WordPress * @subpackage Cache */ /** WP_Object_Cache class */ require_once ABSPATH . WPINC . '/class-wp-object-cache.php'; /** * Sets up Object Cache Global and assigns it. * * @since 2.0.0 * * @global WP_Object_Cache $wp_object_cache */ function wp_cache_init() { $GLOBALS['wp_object_cache'] = new WP_Object_Cache(); } /** * Adds data to the cache, if the cache key doesn't already exist. * * @since 2.0.0 * * @see WP_Object_Cache::add() * @global WP_Object_Cache $wp_object_cache Object cache global instance. * * @param int|string $key The cache key to use for retrieval later. * @param mixed $data The data to add to the cache. * @param string $group Optional. The group to add the cache to. Enables the same key * to be used across groups. Default empty. * @param int $expire Optional. When the cache data should expire, in seconds. * Default 0 (no expiration). * @return bool True on success, false if cache key and group already exist. */ function wp_cache_add( $key, $data, $group = '', $expire = 0 ) { global $wp_object_cache; return $wp_object_cache->add( $key, $data, $group, (int) $expire ); } /** * Adds multiple values to the cache in one call. * * @since 6.0.0 * * @see WP_Object_Cache::add_multiple() * @global WP_Object_Cache $wp_object_cache Object cache global instance. * * @param array $data Array of keys and values to be set. * @param string $group Optional. Where the cache contents are grouped. Default empty. * @param int $expire Optional. When to expire the cache contents, in seconds. * Default 0 (no expiration). * @return bool[] Array of return values, grouped by key. Each value is either * true on success, or false if cache key and group already exist. */ function wp_cache_add_multiple( array $data, $group = '', $expire = 0 ) { global $wp_object_cache; return $wp_object_cache->add_multiple( $data, $group, $expire ); } /** * Replaces the contents of the cache with new data. * * @since 2.0.0 * * @see WP_Object_Cache::replace() * @global WP_Object_Cache $wp_object_cache Object cache global instance. * * @param int|string $key The key for the cache data that should be replaced. * @param mixed $data The new data to store in the cache. * @param string $group Optional. The group for the cache data that should be replaced. * Default empty. * @param int $expire Optional. When to expire the cache contents, in seconds. * Default 0 (no expiration). * @return bool True if contents were replaced, false if original value does not exist. */ function wp_cache_replace( $key, $data, $group = '', $expire = 0 ) { global $wp_object_cache; return $wp_object_cache->replace( $key, $data, $group, (int) $expire ); } /** * Saves the data to the cache. * * Differs from wp_cache_add() and wp_cache_replace() in that it will always write data. * * @since 2.0.0 * * @see WP_Object_Cache::set() * @global WP_Object_Cache $wp_object_cache Object cache global instance. * * @param int|string $key The cache key to use for retrieval later. * @param mixed $data The contents to store in the cache. * @param string $group Optional. Where to group the cache contents. Enables the same key * to be used across groups. Default empty. * @param int $expire Optional. When to expire the cache contents, in seconds. * Default 0 (no expiration). * @return bool True on success, false on failure. */ function wp_cache_set( $key, $data, $group = '', $expire = 0 ) { global $wp_object_cache; return $wp_object_cache->set( $key, $data, $group, (int) $expire ); } /** * Sets multiple values to the cache in one call. * * @since 6.0.0 * * @see WP_Object_Cache::set_multiple() * @global WP_Object_Cache $wp_object_cache Object cache global instance. * * @param array $data Array of keys and values to be set. * @param string $group Optional. Where the cache contents are grouped. Default empty. * @param int $expire Optional. When to expire the cache contents, in seconds. * Default 0 (no expiration). * @return bool[] Array of return values, grouped by key. Each value is either * true on success, or false on failure. */ function wp_cache_set_multiple( array $data, $group = '', $expire = 0 ) { global $wp_object_cache; return $wp_object_cache->set_multiple( $data, $group, $expire ); } /** * Retrieves the cache contents from the cache by key and group. * * @since 2.0.0 * * @see WP_Object_Cache::get() * @global WP_Object_Cache $wp_object_cache Object cache global instance. * * @param int|string $key The key under which the cache contents are stored. * @param string $group Optional. Where the cache contents are grouped. Default empty. * @param bool $force Optional. Whether to force an update of the local cache * from the persistent cache. Default false. * @param bool $found Optional. Whether the key was found in the cache (passed by reference). * Disambiguates a return of false, a storable value. Default null. * @return mixed|false The cache contents on success, false on failure to retrieve contents. */ function wp_cache_get( $key, $group = '', $force = false, &$found = null ) { global $wp_object_cache; return $wp_object_cache->get( $key, $group, $force, $found ); } /** * Retrieves multiple values from the cache in one call. * * @since 5.5.0 * * @see WP_Object_Cache::get_multiple() * @global WP_Object_Cache $wp_object_cache Object cache global instance. * * @param array $keys Array of keys under which the cache contents are stored. * @param string $group Optional. Where the cache contents are grouped. Default empty. * @param bool $force Optional. Whether to force an update of the local cache * from the persistent cache. Default false. * @return array Array of return values, grouped by key. Each value is either * the cache contents on success, or false on failure. */ function wp_cache_get_multiple( $keys, $group = '', $force = false ) { global $wp_object_cache; return $wp_object_cache->get_multiple( $keys, $group, $force ); } /** * Removes the cache contents matching key and group. * * @since 2.0.0 * * @see WP_Object_Cache::delete() * @global WP_Object_Cache $wp_object_cache Object cache global instance. * * @param int|string $key What the contents in the cache are called. * @param string $group Optional. Where the cache contents are grouped. Default empty. * @return bool True on successful removal, false on failure. */ function wp_cache_delete( $key, $group = '' ) { global $wp_object_cache; return $wp_object_cache->delete( $key, $group ); } /** * Deletes multiple values from the cache in one call. * * @since 6.0.0 * * @see WP_Object_Cache::delete_multiple() * @global WP_Object_Cache $wp_object_cache Object cache global instance. * * @param array $keys Array of keys under which the cache to deleted. * @param string $group Optional. Where the cache contents are grouped. Default empty. * @return bool[] Array of return values, grouped by key. Each value is either * true on success, or false if the contents were not deleted. */ function wp_cache_delete_multiple( array $keys, $group = '' ) { global $wp_object_cache; return $wp_object_cache->delete_multiple( $keys, $group ); } /** * Increments numeric cache item's value. * * @since 3.3.0 * * @see WP_Object_Cache::incr() * @global WP_Object_Cache $wp_object_cache Object cache global instance. * * @param int|string $key The key for the cache contents that should be incremented. * @param int $offset Optional. The amount by which to increment the item's value. * Default 1. * @param string $group Optional. The group the key is in. Default empty. * @return int|false The item's new value on success, false on failure. */ function wp_cache_incr( $key, $offset = 1, $group = '' ) { global $wp_object_cache; return $wp_object_cache->incr( $key, $offset, $group ); } /** * Decrements numeric cache item's value. * * @since 3.3.0 * * @see WP_Object_Cache::decr() * @global WP_Object_Cache $wp_object_cache Object cache global instance. * * @param int|string $key The cache key to decrement. * @param int $offset Optional. The amount by which to decrement the item's value. * Default 1. * @param string $group Optional. The group the key is in. Default empty. * @return int|false The item's new value on success, false on failure. */ function wp_cache_decr( $key, $offset = 1, $group = '' ) { global $wp_object_cache; return $wp_object_cache->decr( $key, $offset, $group ); } /** * Removes all cache items. * * @since 2.0.0 * * @see WP_Object_Cache::flush() * @global WP_Object_Cache $wp_object_cache Object cache global instance. * * @return bool True on success, false on failure. */ function wp_cache_flush() { global $wp_object_cache; return $wp_object_cache->flush(); } /** * Removes all cache items from the in-memory runtime cache. * * @since 6.0.0 * * @see WP_Object_Cache::flush() * * @return bool True on success, false on failure. */ function wp_cache_flush_runtime() { return wp_cache_flush(); } /** * Removes all cache items in a group, if the object cache implementation supports it. * * Before calling this function, always check for group flushing support using the * `wp_cache_supports( 'flush_group' )` function. * * @since 6.1.0 * * @see WP_Object_Cache::flush_group() * @global WP_Object_Cache $wp_object_cache Object cache global instance. * * @param string $group Name of group to remove from cache. * @return bool True if group was flushed, false otherwise. */ function wp_cache_flush_group( $group ) { global $wp_object_cache; return $wp_object_cache->flush_group( $group ); } /** * Determines whether the object cache implementation supports a particular feature. * * @since 6.1.0 * * @param string $feature Name of the feature to check for. Possible values include: * 'add_multiple', 'set_multiple', 'get_multiple', 'delete_multiple', * 'flush_runtime', 'flush_group'. * @return bool True if the feature is supported, false otherwise. */ function wp_cache_supports( $feature ) { switch ( $feature ) { case 'add_multiple': case 'set_multiple': case 'get_multiple': case 'delete_multiple': case 'flush_runtime': case 'flush_group': return true; default: return false; } } /** * Closes the cache. * * This function has ceased to do anything since WordPress 2.5. The * functionality was removed along with the rest of the persistent cache. * * This does not mean that plugins can't implement this function when they need * to make sure that the cache is cleaned up after WordPress no longer needs it. * * @since 2.0.0 * * @return true Always returns true. */ function wp_cache_close() { return true; } /** * Adds a group or set of groups to the list of global groups. * * @since 2.6.0 * * @see WP_Object_Cache::add_global_groups() * @global WP_Object_Cache $wp_object_cache Object cache global instance. * * @param string|string[] $groups A group or an array of groups to add. */ function wp_cache_add_global_groups( $groups ) { global $wp_object_cache; $wp_object_cache->add_global_groups( $groups ); } /** * Adds a group or set of groups to the list of non-persistent groups. * * @since 2.6.0 * * @param string|string[] $groups A group or an array of groups to add. */ function wp_cache_add_non_persistent_groups( $groups ) { // Default cache doesn't persist so nothing to do here. } /** * Switches the internal blog ID. * * This changes the blog id used to create keys in blog specific groups. * * @since 3.5.0 * * @see WP_Object_Cache::switch_to_blog() * @global WP_Object_Cache $wp_object_cache Object cache global instance. * * @param int $blog_id Site ID. */ function wp_cache_switch_to_blog( $blog_id ) { global $wp_object_cache; $wp_object_cache->switch_to_blog( $blog_id ); } /** * Resets internal cache keys and structures. * * If the cache back end uses global blog or site IDs as part of its cache keys, * this function instructs the back end to reset those keys and perform any cleanup * since blog or site IDs have changed since cache init. * * This function is deprecated. Use wp_cache_switch_to_blog() instead of this * function when preparing the cache for a blog switch. For clearing the cache * during unit tests, consider using wp_cache_init(). wp_cache_init() is not * recommended outside of unit tests as the performance penalty for using it is high. * * @since 3.0.0 * @deprecated 3.5.0 Use wp_cache_switch_to_blog() * @see WP_Object_Cache::reset() * * @global WP_Object_Cache $wp_object_cache Object cache global instance. */ function wp_cache_reset() { _deprecated_function( __FUNCTION__, '3.5.0', 'wp_cache_switch_to_blog()' ); global $wp_object_cache; $wp_object_cache->reset(); }