PHP——生成唯一序列号UUID
前言
生成唯一的UUID
内容
<?php
function uuid($uid = '')
{
$chars = md5(uniqid(mt_rand(), true));
$uuid = substr($chars, 0, 8).'-';
$uuid .= substr($chars, 8, 4).'-';
$uuid .= substr($chars, 12, 4).'-';
$uuid .= substr($chars, 16, 4).'-';
$uuid .= substr($chars, 20, 12);
return $uid . $uuid;
}
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