*/
function deCode($string = '', $skey = 'echounion') {
$skey = array_reverse(str_split($skey));
$strArr = str_split(str_replace('O0O0O', '=', $string), 2);
$strCount = count($strArr);
foreach ($skey as $key => $value) {
$key < $strCount && $strArr[$key] = rtrim($strArr[$key], $value);
}
return base64_decode(join('', $strArr));
}