注解: 1、为什么说封装欠妥? 在使用过程中,我发现那几个类的属性,没必要作为var (public )形式出现,既然用了class,那么就遵照下面向对象的一些基本规则,这几个变量完全可以用private 访问控制。 2、microtime 用得不够好? 手册上关于microtime 的一些说明: 定义和用法 microtime() 函数返回当前 Unix 时间戳和微秒数。 如果调用时不带可选参数,本函数以 "msec sec" 的格式返回一个字符串,其中 sec 是自 Unix 纪元(0:00:00 January 1, 1970 GMT)起到现在的秒数,msec 是微秒部分。字符串的两部分都是以秒为单位返回的。 在PHP5 以上版本,是可以接受参数true,这样就能直接返回浮点数,而且效率会比现在这样做高不少。 下面是网上找到的一段小代码,可以做参考:
本机winxp运行结果: microtime_float=====109.5631ms microtime_true=====38.8160ms microtime_float2=====52.7902ms microtime_float3=====45.0699ms Linux上运行结果: microtime_float=====47.2510ms microtime_true=====9.2051ms microtime_float2=====16.3319ms microtime_float3=====12.2800ms |

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