The xajax PHP object performs the function of an intermediary between the client application and the server. First, include the xajax class library
xajax对象为可能从php脚本或输入表单事件处理程序中调用的php函数创建包装器函数。
The xajax object creates wrapper functions for the PHP functions that may be invoked from a PHP script or an input form event handler.