/** Creates a unique filename in the directory specified adding a counter suffix */
public static function createUniquefilename($basename, $directory)
{
$basename = UploadUtils::escapeStrangeChars($basename);
$dest = $directory . DIRECTORY_SEPARATOR . $basename;
if (file_exists($dest)) {
// Destination file already exists, generate an alternative.
$pos = strrpos($basename, '.');
if ($pos) {
$name = substr($basename, 0, $pos);
$ext = substr($basename, $pos);
} else {
$name = $basename;
}
$counter = 0;
do {
$dest = $directory . '/' . $name . '_' . $counter++ . $ext;
} while (file_exists($dest));
}
return basename($dest);
}
