cURL size limit of get

Question

I want to know if there is any way to get only a particular amount of data through cURL?

Option 1:
curl_setopt ($curl_handle, CURLOPT_HTTPHEADER, array("Range: bytes=0-1000")); but Its not supported by all servers

Option 2:
Having trouble limiting download size of PHP's cURL function but this function is giving me error Failed writing body (0 != 11350) and reading for which I found that many say its a bug.

So following the above write_function I tried to curl_close($handle) instead of returning 0 but this throws an error Attempt to close cURL handle from a callback

Now the only way I can think of is parsing headers for content length but this will eventually result in 2 requests ?? first getting headers with CURLOPT_NOBODY then getting full content?

Answer 1

Option 2: Having trouble limiting download size of PHP's cURL function but this function is giving me error Failed writing body (0 != 11350) and reading for which I found that many say its a bug.

It's not clear what you are doing there exactly. If you return 0 then cURL will signal an error, sure, but you will have read all the data you need. Just ignore the error.

Another option that you don't mention if you have tried is to use fopen with the http:// wrapper. For example:

$h = fopen('http://example.com/file.php', 'r');
$first1000Bytes = fread($h, 1000);
fclose($h);

Answer 2

Is it possible to use fopen and fgets to read a line at a time until you believe you've read enough lines, or read a character at a time using fgetc. fgets

Not sure if this is excatly what you're looking for, but should limit the amount of data gotten from the remote source.

Answer 3

这似乎解决了你的问题：

mb_strlen($string, '8bit');