Example of an algorithm for generating globally unique guid using php

Example of an algorithm for generating globally unique guid using php

This article describes how to use php to generate a guid with a globally unique identifier. For more information, see. 1. create the php class library file-guid. php name = $coumputer_name; $address->ip = $ip; return $address; } function toString() { return strtolower($this->name.'/'.$this->ip); }}class Random { function nextLong() { $tmp = rand(0,1)?'-':''; return $tmp.rand(1000, 9999).rand(1000, 9999).rand(1000, 9999).rand(100, 999).rand(100, 999); }}class Guid{ var $valueBeforeMD5; var $valueAfterMD5; function Guid($computer_name, $ip){ $this->getGuid($computer_name, $ip); } //by bbs.it-home.org function getGuid($coumputer_name, $ip){ $address = NetAddress::getHost($coumputer_name, $ip); $this->valueBeforeMD5 = $address->toString().':'.System::currentTimeMillis().':'.Random::nextLong(); $this->valueAfterMD5 = md5($this->valueBeforeMD5); } function newGuid() { $Guid = new Guid(); return $Guid; } function toString() { $raw = strtoupper($this->valueAfterMD5); return substr($raw,0,8).'-'.substr($raw,8,4).'-'.substr($raw,12,4).'-'.substr($raw,16,4).'-'.substr($raw,20); }}?> 2. call an example to generate a unique Gid: ToString (); // output result: 3238D32E-807C-B1C4-01C4-FD1346D32110?>