摘要：IE各版本浏览器IE5.5到IE8基本没有区别，除了HTTP_USER_AGENT可以判断IE版本，IE9作出了一些改变 IE5.5-IE8[HTTP_ACCEPT] image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/mswo. 阅读全文

摘要：一、while,list,each对抗foreach$data = range(1,200000);while(list($subscript, $value) = each($data)){}foreach($data as $subscript => $value){}第一段平均执行时间：300毫秒第二段平均执行时间：82毫秒 阅读全文