stream_get_meta_data — Retrieves header/meta data from streams/file pointers.
Returns information about an existing stream.
Example
<?php
$url = 'http://www.phpcodez.com/';
if (!$fp = fopen($url, 'r')) {
trigger_error("Unable to open URL ($url)", E_USER_ERROR);
}
$meta = stream_get_meta_data($fp);
echo "<pre>";print_r($meta);
fclose($fp);
?>