You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
53 lines
1.5 KiB
53 lines
1.5 KiB
<?php |
|
|
|
function getRssFeed($feed_uri, $reload = false) |
|
{ |
|
$meta_file = md5($feed_uri) . '.json'; |
|
$meta = @json_decode(@file_get_contents($meta_file), true); |
|
|
|
$ch = curl_init(); |
|
curl_setopt($ch, CURLOPT_URL, $feed_uri); |
|
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 20); |
|
curl_setopt($ch, CURLOPT_HEADER, true); |
|
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); |
|
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); |
|
if (!$reload) { |
|
if (isset($meta['etag'])) |
|
curl_setopt($ch, CURLOPT_HTTPHEADER, array('If-None-Match: ' . $meta['etag'])); |
|
if (isset($meta['lastModified'])) |
|
curl_setopt($ch, CURLOPT_HTTPHEADER, array('If-Modified-Since: ' . $meta['lastModified'])); |
|
} |
|
|
|
$response = curl_exec($ch); |
|
$info = curl_getinfo($ch); |
|
|
|
$http_code = $info['http_code']; |
|
if ($http_code !== 200) |
|
return false; |
|
|
|
$headers = substr($response, 0, $info['header_size']); |
|
$headers_arr = array(); |
|
foreach (explode("\n", $headers) as $h) { |
|
$h = explode(':', $h, 2); |
|
if (!isset($h[1])) continue; |
|
$key = $h[0]; |
|
$value = trim($h[1]); |
|
if (!isset($headers_arr[$key])) |
|
$headers_arr[$key] = $value; |
|
elseif (is_array($headers[$key])) |
|
$headers_arr[$key][] = $value; |
|
else |
|
$headers_arr[$key] = array($headers_arr[$key], $value); |
|
} |
|
|
|
$meta = array(); |
|
if (isset($headers_arr['Etag'])) |
|
$meta['etag'] = $headers_arr['Etag']; |
|
if (isset($headers_arr['Last-Modified'])) |
|
$meta['lastModified'] = $headers_arr['Last-Modified']; |
|
file_put_contents($meta_file, json_encode($meta)); |
|
|
|
$body = substr($response, $info['header_size']); |
|
|
|
return @simplexml_load_string($body); |
|
}
|
|
|