PHP CURLOPT_WRITEFUNCTION returns headers 在 body

Question

当我包含 curl_setopt($ch, CURLOPT_WRITEFUNCTION, 'curl_write_flush') 时，我将 headers 插入到 $body 中。但是没有 CURLOPT_WRITEFUNCTION 一切正常。我该怎么做才能阻止 headers 被插入到 $body 中？

<?php

    $ch = curl_init();
    
    curl_setopt($ch, CURLOPT_URL, "https://whosebug.com");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

    function curl_write_flush($curl_handle, $chunk) { 
        echo $chunk;
        ob_flush();
        flush();
        return strlen($chunk);
    }
    curl_setopt($ch, CURLOPT_WRITEFUNCTION, 'curl_write_flush'); // WORKS WITHOUT

    $response = curl_exec($ch);
    $header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);

    curl_close($ch);

    $headers = substr($response, 0, $header_size);
    $body = substr($response, $header_size);

    die($body);

?>

Answer 1

https://curl.se/libcurl/c/CURLOPT_WRITEFUNCTION.html

If CURLOPT_HEADER is enabled, which makes header data get passed to the write callback, you can get up to CURL_MAX_HTTP_HEADER bytes of header data passed into it. This usually means 100K.

要么删除 curl_setopt($ch, CURLOPT_HEADER, 1);，要么您必须自己从回调数据中解析出 headers。

您也可以使用 CURLOPT_HEADERFUNCTION，就像这个答案一样：

https://whosebug.com/a/41135574/1064767

PHP CURLOPT_WRITEFUNCTION returns headers 在 body

PHP CURLOPT_WRITEFUNCTION returns headers in body

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