note 82843 deleted from features.remote-files by nlopess
| From: | nlopess@php.net | Date: | Tue, 29 Apr 2008 09:08:35 +0000 |
| Subject: | note 82843 deleted from features.remote-files by nlopess | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-138891@lists.php.net to get a copy of this message | ||
Note Submitter: mail at 3v1n0 dot net
----
This is a function that works like fopen/fread for remote HTTP files but that supports the HTTP
resume.
Calling http_get_resume(http://any-url.com) simply it will output the http content (it doesn't
support any http 3xx, 4xx, 5xx error, but they could be easily managed). Calling
http_get_resume(http://any-url.com, 10) it will output the http content starting from the 10th byte
(as many download managers do; I've tested with wget)...
I had to write since the fopen() function doesn't support fseek() for remote files, and this is
a good workaround.
<?
function http_get_resume($url, $range = 0)
{
$url_stuff = parse_url($url);
$port = isset($url_stuff['port']) ? $url_stuff['port'] : 80;
$fp = @fsockopen($url_stuff['host'], $port);
if (!$fp)
return false;
$query = 'GET
'.$url_stuff['path'].'?'.$url_stuff['query']."
HTTP/1.1\r\n";
$query .= 'Host: '.$url_stuff['host']."\r\n";
$query .= 'Connection: close'."\r\n";
$query .= 'Cache-Control: no'."\r\n";
$query .= 'Accept-Ranges: bytes'."\r\n";
if ($range != 0)
$query .= 'Range: bytes='.$range.'-'."\r\n"; // -500
//$query .= 'Referer: http://php.net'."\r\n";
//$query .= 'User-Agent: yourAgent'."\r\n";
$query .= "\r\n";
fwrite($fp, $query);
$chunksize = 1024*1024;
$headersfound = false;
while (!feof($fp) && !$headersfound) {
$buffer .= @fread($fp, 1);
if (preg_match('/HTTP\/[0-9]\.[0-9][ ]+([0-9]{3}).*\r\n/', $buffer, $matches) ||
preg_match('/[^:][A-Za-z_-]:.*\r\n/', $buffer)) {
if (!preg_match('/2[0-9]{2}/', $matches[1]))
return false;
$headers[] = $buffer;
$buffer = '';
} else if (preg_match('/^\r\n/', $buffer)) {
$headersfound = true;
$buffer = '';
}
if (strlen($buffer) >= $chunksize)
return false;
}
while (!feof($fp) && $headersfound) {
$buffer = @fread($fp, $chunksize);
echo $buffer;
ob_flush();
flush();
}
$status = fclose($fp);
return $status;
}
?>