php curl获取cookie

$url ='';
    
$ch = curl_init();
//设置选项，包括URL
curl_setopt($ch, CURLOPT_URL,$url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_HEADER,1);
curl_setopt($ch, CURLOPT_COOKIEJAR,$cookie_file);   //存储cookies
preg_match_all('/^Set-Cookie: (.*?);/m',curl_exec($ch),$m);
$cookie = $m[1][0].';'.$m[1][1];          //拼接cookie
$m = parse_url($m[0][1]);
$m = explode('=',$m['path']);
$token = $m[1];
//执行并获取HTML文档内容
$output = curl_exec($ch);
//释放curl句柄
curl_close($ch);

$cookie_file = dirname(__FILE__).'/cookie.txt';  
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_POST,1);
curl_setopt($ch, CURLOPT_POSTFIELDS,$post_data);
curl_setopt($ch, CURLOPT_COOKIEFILE,$cookie_file); //可以用cookie文件
//curl_setopt($ch, CURLOPT_COOKIE,$cookie); 也可以用获取到的
$customerlist = curl_exec($ch);
curl_close($ch);