如何在没有内存开销的情况下在PHP curl中发布大量数据?

问题描述：

我目前正在使用PHP curl扩展程序与某些HTTP API通信.

I'm currently using PHP curl extension to communicate with some HTTP APIs.

我使用批量加载器一次执行很多操作.必须使用POST方法调用批量端点，因此我使用的代码如下:

I use a bulk loader to perform a lot of operations at once. The bulk endpoint must be called with POST method so I use a code like :

<?php
$h = curl_init($url);
curl_setopt(CURLOPT_POST, true);
curl_setopt(CURLOPT_POSTFIELDS, $data);
curl_setopt(CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($h);
curl_close($h);

批量端点允许我发送大量数据(一次超过200Mo).目前，我需要将数据加载到一个变量中，该变量要求PHP能够使用足够的内存...

The bulk endpoint allows me to send a huge amount of data (more than 200Mo at once). For the moment I need to load the data inside a variable which require PHP to be able to use enough memory...

我只需要为批量加载将memory_limit设置为较高的值...

I need to set memory_limit to a high value just for the bulk load...

有没有一种方法可以使用文件流来发送带有curl PHP扩展名的数据?我看到了CURLOPT_INFILE和CURLOPT_READFUNCTION，但似乎不适用于POST方法...

Is there a way to use a file stream to send data with the curl PHP extension ? I saw the CURLOPT_INFILE and CURLOPT_READFUNCTION but it seems to don't work with POST method...

我还看到curl命令行工具能够执行--data "@/path/to/file/content"，这似乎正是我所需要的...

I also saw that the curl command line tool is able to perform a --data "@/path/to/file/content" which seems to be what I need...

有什么想法吗?

答

使用CURLOPT_INFILE

$curl = curl_init();
curl_setopt( $curl, CURLOPT_PUT, 1 );
curl_setopt( $curl, CURLOPT_INFILESIZE, filesize($tmpFile) );
curl_setopt( $curl, CURLOPT_INFILE, ($in=fopen($tmpFile, 'r')) );
curl_setopt( $curl, CURLOPT_CUSTOMREQUEST, 'POST' );
curl_setopt( $curl, CURLOPT_HTTPHEADER, [ 'Content-Type: application/json' ] );
curl_setopt( $curl, CURLOPT_URL, $url );
curl_setopt( $curl, CURLOPT_RETURNTRANSFER, 1 );
$result = curl_exec($curl);
curl_close($curl);
fclose($in);

如何在没有内存开销的情况下在PHP curl中发布大量数据?

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