<?php 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; } } echo guid();//{26E69265-078C-C7D9-A0CA-33348CEEE712} function create_guid() { $charid = strtoupper(md5(uniqid(mt_rand(), true))); $hyphen = chr(45);// "-" $uuid = substr($charid, 0, 8) .substr($charid, 8, 4) .substr($charid,12, 4) .substr($charid,16, 4) ; return $uuid; } echo create_guid();//927D69607CC9DF2160B1 ?>
*代码中//后面标示了字符的转码如chr(45)代表“-”,chr(123)代表“{”等等,可以根据自己需要改写生成GUID的位数以及样式