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<?php
/**
* GET an HTTP URL to retrieve its content
*
* @param string $url URL to get (http://...)
* @param int $timeout network timeout (in seconds)
* @param int $maxBytes maximum downloaded bytes (default: 4 MiB)
*
* @return array HTTP response headers, downloaded content
*
* Output format:
* [0] = associative array containing HTTP response headers
* [1] = URL content (downloaded data)
*
* Example:
* list($headers, $data) = get_http_url('http://sebauvage.net/');
* if (strpos($headers[0], '200 OK') !== false) {
* echo 'Data type: '.htmlspecialchars($headers['Content-Type']);
* } else {
* echo 'There was an error: '.htmlspecialchars($headers[0]);
* }
*
* @see http://php.net/manual/en/function.file-get-contents.php
* @see http://php.net/manual/en/function.stream-context-create.php
* @see http://php.net/manual/en/function.get-headers.php
*/
function get_http_url($url, $timeout = 30, $maxBytes = 4194304)
{
$options = array(
'http' => array(
'method' => 'GET',
'timeout' => $timeout,
'user_agent' => 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:23.0)'
.' Gecko/20100101 Firefox/23.0'
)
);
$context = stream_context_create($options);
try {
// TODO: catch Exception in calling code (thumbnailer)
$content = file_get_contents($url, false, $context, -1, $maxBytes);
} catch (Exception $exc) {
return array(array(0 => 'HTTP Error'), $exc->getMessage());
}
if (!$content) {
return array(array(0 => 'HTTP Error'), '');
}
return array(get_headers($url, 1), $content);
}
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