WP::parse_request( array|string $extra_query_vars = '' ): bool

136	public function parse_request( $extra_query_vars = '' ) {137		global $wp_rewrite;138 139		/**140		 * Filters whether to parse the request.141		 *142		 * @since 3.5.0143		 *144		 * @param bool         $bool             Whether or not to parse the request. Default true.145		 * @param WP           $wp               Current WordPress environment instance.146		 * @param array|string $extra_query_vars Extra passed query variables.147		 */148		if ( ! apply_filters( 'do_parse_request', true, $this, $extra_query_vars ) ) {149			return false;150		}151 152		$this->query_vars     = array();153		$post_type_query_vars = array();154 155		if ( is_array( $extra_query_vars ) ) {156			$this->extra_query_vars = & $extra_query_vars;157		} elseif ( ! empty( $extra_query_vars ) ) {158			parse_str( $extra_query_vars, $this->extra_query_vars );159		}160		// Process PATH_INFO, REQUEST_URI, and 404 for permalinks.161 162		// Fetch the rewrite rules.163		$rewrite = $wp_rewrite->wp_rewrite_rules();164 165		if ( ! empty( $rewrite ) ) {166			// If we match a rewrite rule, this will be cleared.167			$error               = '404';168			$this->did_permalink = true;169 170			$pathinfo         = $_SERVER['PATH_INFO'] ?? '';171			list( $pathinfo ) = explode( '?', $pathinfo );172			$pathinfo         = str_replace( '%', '%25', $pathinfo );173 174			list( $req_uri ) = explode( '?', $_SERVER['REQUEST_URI'] );175			$self            = $_SERVER['PHP_SELF'];176 177			$home_path       = parse_url( home_url(), PHP_URL_PATH );178			$home_path_regex = '';179			if ( is_string( $home_path ) && '' !== $home_path ) {180				$home_path       = trim( $home_path, '/' );181				$home_path_regex = sprintf( '|^%s|i', preg_quote( $home_path, '|' ) );182			}183 184			/*185			 * Trim path info from the end and the leading home path from the front.186			 * For path info requests, this leaves us with the requesting filename, if any.187			 * For 404 requests, this leaves us with the requested permalink.188			 */189			$req_uri  = str_replace( $pathinfo, '', $req_uri );190			$req_uri  = trim( $req_uri, '/' );191			$pathinfo = trim( $pathinfo, '/' );192			$self     = trim( $self, '/' );193 194			if ( ! empty( $home_path_regex ) ) {195				$req_uri  = preg_replace( $home_path_regex, '', $req_uri );196				$req_uri  = trim( $req_uri, '/' );197				$pathinfo = preg_replace( $home_path_regex, '', $pathinfo );198				$pathinfo = trim( $pathinfo, '/' );199				$self     = preg_replace( $home_path_regex, '', $self );200				$self     = trim( $self, '/' );201			}202 203			// The requested permalink is in $pathinfo for path info requests and $req_uri for other requests.204			if ( ! empty( $pathinfo ) && ! preg_match( '|^.*' . $wp_rewrite->index . '$|', $pathinfo ) ) {205				$requested_path = $pathinfo;206			} else {207				// If the request uri is the index, blank it out so that we don't try to match it against a rule.208				if ( $req_uri === $wp_rewrite->index ) {209					$req_uri = '';210				}211 212				$requested_path = $req_uri;213			}214 215			$requested_file = $req_uri;