WP_Http_Cookie::test( string $url )

	public function test( $url ) {
		if ( is_null( $this->name ) )
			return false;

		// Expires - if expired then nothing else matters.
		if ( isset( $this->expires ) && time() > $this->expires )
			return false;

		// Get details on the URL we're thinking about sending to.
		$url = parse_url( $url );
		$url['port'] = isset( $url['port'] ) ? $url['port'] : ( 'https' == $url['scheme'] ? 443 : 80 );
		$url['path'] = isset( $url['path'] ) ? $url['path'] : '/';

		// Values to use for comparison against the URL.
		$path   = isset( $this->path )   ? $this->path   : '/';
		$port   = isset( $this->port )   ? $this->port   : null;
		$domain = isset( $this->domain ) ? strtolower( $this->domain ) : strtolower( $url['host'] );
		if ( false === stripos( $domain, '.' ) )
			$domain .= '.local';

		// Host - very basic check that the request URL ends with the domain restriction (minus leading dot).
		$domain = substr( $domain, 0, 1 ) == '.' ? substr( $domain, 1 ) : $domain;
		if ( substr( $url['host'], -strlen( $domain ) ) != $domain )
			return false;

		// Port - supports "port-lists" in the format: "80,8000,8080".
		if ( !empty( $port ) && !in_array( $url['port'], explode( ',', $port) ) )
			return false;

		// Path - request path must start with path restriction.
		if ( substr( $url['path'], 0, strlen( $path ) ) != $path )
			return false;

		return true;
	}