If you want to fetch the error message, make sure you fetch it before you close the current cURL session or the error message will be reset to an empty string.PHP - Manual: curl_error
2025-10-23
(PHP 4 >= 4.0.3, PHP 5, PHP 7, PHP 8)
curl_error — 返回当前会话最后一次错误的字符串
返回错误信息,或者如果没有任何错误发生就返回 '' (空字符串)。
| 版本 | 说明 |
|---|---|
| 8.0.0 |
handle 现在接受 CurlHandle
实例;之前接受 resource。
|
示例 #1 curl_error() 示例
<?php
// 创建 cURL 句柄,指向一个不存在的位置
$ch = curl_init('http://404.php.net/');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
if(curl_exec($ch) === false)
{
echo 'Curl error: ' . curl_error($ch);
}
else
{
echo '操作完成没有任何错误';
}
// 关闭句柄
curl_close($ch);
?>If you want to fetch the error message, make sure you fetch it before you close the current cURL session or the error message will be reset to an empty string.For a 404 response to actually trigger an error as the example seems to be trying to demonstrate the following option should be set:
curl_setopt($ch,CURLOPT_FAILONERROR,true);
As per http://curl.haxx.se/libcurl/c/libcurl-errors.html
CURLE_HTTP_RETURNED_ERROR (22)
This is returned if CURLOPT_FAILONERROR is set TRUE and the HTTP server returns an error code that is >= 400. (This error code was formerly known as CURLE_HTTP_NOT_FOUND.)If you're using curl_multi and there's an error, curl_error() will remain empty until you've called curl_multi_info_read(). That function "pumps" the information inside the curl libraries to the point where curl_error() will return a useful string.
This should really be added to the documentation, because it's not at all obvious.curl_error is not a textual representation of curl_errno.
It's an actual error *message*.
If you want textual representation of error *code*, look for curl_strerror.