php產生全球唯一識別碼guid的演算法樣本

本文介紹下，php產生全球唯一識別碼guid的例子，有需要的朋友參考下。 1，建立php類庫檔案-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，調用樣本，產生唯一的Gid： toString();//輸出結果：3238D32E-807C-B1C4-01C4-FD1346D32110?>

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