支持类PHP语法的脚本解释引擎。支持运行状态下动态输入脚本参数，返回字符串结果。支持自定义函数调用，支持外部函数扩展。(含源码)-Support the type of PHP scr ipts to explain grammar engine. Support for running scr ipts under the dynamic input parameters and return the result string. Support for custom function cal