PHP curl_setopt（）CURLOPT_PROGRESSFUNCTION [英] PHP curl_setopt() CURLOPT_PROGRESSFUNCTION

问题描述

我在 curl_setopt（）文档中看到您可以设置一个回调函数来显示curl_exec的进度。关于如何使用回调函数没有太多说明。有人知道吗？我只想输出已下载到STDOUT的文件的百分比。感谢。

i see in the curl_setopt() documentation that you can set a callback function to display the progress of a curl_exec. There's not much said on how the callback function is used. Does anyone know? I'd just like to output the percentage of the file which has been downloaded to STDOUT. Thanks.

推荐答案

这是回调在C中的样子：

This is how the callback looks in C:

typedef int (*curl_progress_callback)(void *clientp,
                                      double dltotal,
                                      double dlnow,
                                      double ultotal,
                                      double ulnow);

可能在PHP中它应该像

Probably in PHP it should look like

curl_progress_callback($clientp, $dltotal, $dlnow, $ultotal, $ulnow)

b $ b

我假设dl代表下载，ul代表上传。

I suppose that dl stands for download and ul for upload.

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