1、php curl post请求接口，打印日志执行了一次curl_exce，但是请求的接口却重复执行两次.

2、代码：

$ch = curl_init();

if(false === $ch){

writeRedisLog('create_curl', $activity_id, $mobile, $user_id, '', 0, 'curl failed to initialize');

}

curl_setopt($ch, CURLOPT_URL,$url);

curl_setopt($ch, CURLOPT_POST, 1);

curl_setopt($ch, CURLOPT_TIMEOUT, 3);

curl_setopt($ch, CURLOPT_POSTFIELDS, $data);

curl_setopt($ch, CURLOPT_HEADER, 0);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

curl_setopt($ch, CURLOPT_FAILONERROR, 1);

writeLog($activity_id, $mobile, $user_id.'_H');

$res = curl_exec($ch);

$return_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);

$error_no = curl_errno($ch);

$error_str = curl_error($ch);

curl_close($ch);

//if(!$res){

writeRedisLog('error_request', $activity_id, $mobile, $user_id, $res, $error_no, $error_str);

//}

//推送结果处理

$res = json_decode($res, true);

curl操作请求接口的日志：

_H===15515420703=2018-06-25 16:53:25=http://myhost.com/special/car... (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36

在接口中打印的日志：

有遇到这种情况的吗