48 lines
1.2 KiB
PHP
48 lines
1.2 KiB
PHP
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<?php
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namespace Helpers;
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// 三段
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// 一段是微秒 一段是地址 一段是随机数
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class Uuid
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{
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private $valueBeforeMD5;
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private $valueAfterMD5;
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function __construct()
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{
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$address = $this->getLocalHost();
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$this->valueBeforeMD5 = $address.':'.$this->currentTimeMillis().':'.$this->nextLong();
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$this->valueAfterMD5 = md5($this->valueBeforeMD5);
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}
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function toString()
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{
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$raw = strtoupper($this->valueAfterMD5);
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return substr($raw,0,8).'-'.substr($raw,8,4).'-'.substr($raw,12,4).'-'.substr($raw,16,4).'-'.substr($raw,20);
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}
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private function nextLong()
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{
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$tmp = rand(0,1)?'-':'';
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return $tmp.rand(1000, 9999).rand(1000, 9999).rand(1000, 9999).rand(100, 999).rand(100, 999);
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}
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private function currentTimeMillis()
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{
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list($usec, $sec) = explode(" ",microtime());
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return $sec.substr($usec, 2, 3);
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}
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private function getLocalHost()
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{
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$address = isset($_ENV["COMPUTERNAME"]) ? $_ENV["COMPUTERNAME"]."/":"".'/';
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$address.= $_SERVER["SERVER_ADDR"];
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return strtolower($address);
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}
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static function test($uuid)
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{
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if(!preg_match("/^[0-9A-Za-z]{8}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{12}$/",$uuid))
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{
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return false;
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}else{
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return true;
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}
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}
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}
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