内置方法

$this->_getConst([string $key = null])

$this->_getExUrl(string $a[, array $params = array()])

$this->_loadClass($className[, $isNew = true[, $eKey = null]])

$this->_loadFile(string|array $path[, $fileExtend = null])

 $this->_shareData($command = null)

 &$this->_sql($sql, $key = 'default')

 $this->_addHook(string $type, string|array $callback[, $params = null])

 $this->_fireHook(string $type[, $params = null])

 $this->_removeHook(string $type[, string|array $callback = null, [, $params = null]])