php常见类封装

常见各种开发，类，大集合，遵循拿来即用，比如如下代码$code=newactiveCodeObj;$str=$code->getCode($length,$mode);*/classactiveCodeObj{functiongetCode($length=32,$mode=0){switch($mode){case'1':$str='1234567890';break;case'2':$str='abcdefghijklmnopqrstuvwxyz';break;case'3':