“传输编码:分块"PHP中的标头

问题描述

我想将 Transfer-Encoding: chunked 标头添加到我正在输出的文件(它只是生成纯文本)，但是当我添加时:

i want to add Transfer-Encoding: chunked header to the file that i'm outputing (its just generated plain text), but when i add:

header("Transfer-Encoding: chunked");
flush();

浏览器不想打开文件.

位于 ... 的网页可能是暂时下降或可能已经移动永久转移到一个新的网址.

The webpage at ... might be temporarily down or it may have moved permanently to a new web address.

我需要做什么才能让它工作?

what i need to do for it to work?

推荐答案

您需要在发送的每个块中发送 Content-Length.查看 Wikipedia 以获得第一印象，分块编码的外观.它不是那么微不足道，而且在许多情况下它的尺寸过大.

You need to send the Content-Length with every chunk you send. Look at Wikipedia for a first impression, how a chunked encoding looks like. Its not that trivial and in many cases its oversized.

更新:首先，您发送标头，因为它们必须始终在任何内容之前发送(也使用分块编码).然后你发送(对于每个块)大小(十六进制)，然后是内容.在每个块之后记住 flush().最后，您必须发送一个大小为零的块以确保连接正确关闭.

Update: First you send the headers, because they must always send before any content (also with chunked encoding). Then you send (for every chunk) the size (in hexadecimal) followed by the content. Remember flush() after every chunk. At last you must send a zero-size chunk to make sure, that the connection get closed properly.

它没有经过测试，但是是这样的

Its not tested, but something like this

header("Transfer-Encoding: chunked");
echo "5
";
echo "Hello";
echo "

";
flush();
echo "5
";
echo "World";
echo "
";
flush();
echo "0

";
flush();

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