php gets cookie in response header

    //获取cookie	$s_data 相应头
	function get_cookies($s_data) {
		$preg_cookie = '/Set-Cookie: (.*?);/m';
		preg_match_all($preg_cookie,$s_data,$cookie);
		$cookie = implode(';', $cookie[1]);
		return $cookie;
	}
	
	

Get the cookie in the response header by regular