php生成uuid与php图片上传微秒命名文件名
时间:2021-07-01 10:21:17
帮助过:15人阅读
- function guid(){
- if (function_exists('com_create_guid')){
- return com_create_guid();
- }else{
- mt_srand((double)microtime()*10000);//optional for php 4.2.0 and up.
- $charid = strtoupper(md5(uniqid(rand(), true)));
- $hyphen = chr(45);// "-"
- $uuid = chr(123)// "{"
- .substr($charid, 0, 8).$hyphen
- .substr($charid, 8, 4).$hyphen
- .substr($charid,12, 4).$hyphen
- .substr($charid,16, 4).$hyphen
- .substr($charid,20,12)
- .chr(125);// "}"
- return $uuid;
- }
- }
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