wpdb::query( string $query ): int|bool

2212	public function query( $query ) {2213		if ( ! $this->ready ) {2214			$this->check_current_query = true;2215			return false;2216		}2217 2218		/**2219		 * Filters the database query.2220		 *2221		 * Some queries are made before the plugins have been loaded,2222		 * and thus cannot be filtered with this method.2223		 *2224		 * @since 2.1.02225		 *2226		 * @param string $query Database query.2227		 */2228		$query = apply_filters( 'query', $query );2229 2230		if ( ! $query ) {2231			$this->insert_id = 0;2232			return false;2233		}2234 2235		$this->flush();2236 2237		// Log how the function was called.2238		$this->func_call = "\$db->query(\"$query\")";2239 2240		// If we're writing to the database, make sure the query will write safely.2241		if ( $this->check_current_query && ! $this->check_ascii( $query ) ) {2242			$stripped_query = $this->strip_invalid_text_from_query( $query );2243			/*2244			 * strip_invalid_text_from_query() can perform queries, so we need2245			 * to flush again, just to make sure everything is clear.2246			 */2247			$this->flush();2248			if ( $stripped_query !== $query ) {2249				$this->insert_id  = 0;2250				$this->last_query = $query;2251 2252				wp_load_translations_early();2253 2254				$this->last_error = __( 'WordPress database error: Could not perform query because it contains invalid data.' );2255 2256				return false;2257			}2258		}2259 2260		$this->check_current_query = true;2261 2262		// Keep track of the last query for debug.2263		$this->last_query = $query;2264 2265		$this->_do_query( $query );2266 2267		// Database server has gone away, try to reconnect.2268		$mysql_errno = 0;2269 2270		if ( $this->dbh instanceof mysqli ) {2271			$mysql_errno = mysqli_errno( $this->dbh );2272		} else {2273			/*2274			 * $dbh is defined, but isn't a real connection.2275			 * Something has gone horribly wrong, let's try a reconnect.2276			 */2277			$mysql_errno = 2006;2278		}2279 2280		if ( empty( $this->dbh ) || 2006 === $mysql_errno ) {2281			if ( $this->check_connection() ) {2282				$this->_do_query( $query );2283			} else {2284				$this->insert_id = 0;2285				return false;2286			}2287		}2288 2289		// If there is an error then take note of it.2290		if ( $this->dbh instanceof mysqli ) {2291			$this->last_error = mysqli_error( $this->dbh );