这个知识会在文件上传等场合用到，还没学面向对象，现在用函数形式呈献给各位，代码都做了备注，有不懂得可以在线提问。
php/** * created by phpstorm. * user: administrator * date: 2016/9/19 0019 * time: 19:47 */function rdname(){ $t = getdate(); $year=$t['year']; $month = $t['mon']$t['mon']:$t['mon']; $day = $t['mday']>9?$t['mday']:0.$t['mday']; $hour= $t['hours']>9?$t['hours']:0.$t['hours']; $min = $t['minutes']>9?$t['minutes']:0.$t['minutes']; $sec = $t['seconds']>9?$t['seconds']:0.$t['seconds']; $randnum=mt_rand(1000,9999);//获取随机的4个数字 $randname=$year.$month.$day.$hour.$min.$sec.$randnum;//把年月日时分和随机数拼接起来 return $randname;//返回新的名字}$newname=rdname();echo $newname;?>php/** * created by phpstorm. * user: administrator * date: 2016/9/19 0019 * time: 19:47 */function rdname(){ $t = getdate(); $year=$t['year']; $month = $t['mon']$t['mon']:$t['mon']; $day = $t['mday']>9?$t['mday']:0.$t['mday']; $hour= $t['hours']>9?$t['hours']:0.$t['hours']; $min = $t['minutes']>9?$t['minutes']:0.$t['minutes']; $sec = $t['seconds']>9?$t['seconds']:0.$t['seconds']; $randnum=mt_rand(1000,9999);//获取随机的4个数字 $randname=$year.$month.$day.$hour.$min.$sec.$randnum;//把年月日时分和随机数拼接起来 return $randname;//返回新的名字}$newname=rdname();//把返回的名字赋值给$newname
echo $newname; ?>
效果展示：