kernel/lib/Cache.php
public static function set(string $sName, $mValue, int $iFlag = 0, int $iExpire = 0)
	{
		return self::_getCacheObject()->set($sName, $mValue, $iFlag, $iExpire);
	}
public static function set(string $sName, $mValue, int $iFlag = 0, int $iExpire = 0)
	{
		return self::_getCacheObject()->set($sName, $mValue, $iFlag, $iExpire);
	}
set a value

@access public
@param  string $sName name of the session
@param  mixed $mValue value of this sesion var
@param  int $iFlag unused
@param  int $iExpire expiration of cache
@return void