/**
* Determines whether the cache entry needs to be updated
* for a specified file.
* @param string file (path)
* @param int width to resize to
* @param int height to resize to
* @param int value between 0 and 100 for jpeg; null for any other format
* @param int last modified timestamp of the file in question
* @param boolean true if cache needs to be created / updated
*/
function cached_file_is_needed($src, $width, $height, $quality, $timestamp)
{
$cached_file = wpws_ImageUtils::get_cached_file($src, $width, $height, $quality);
if (!$cached_file) {
return true;
}
$cached_file_timestamp = wpws_ImageUtils::get_mtime_from_cached_file($cached_file);
if ($cached_file_timestamp != $timestamp) {
return true;
}
return false;
}
