<?php
/**
* 生成永远唯一的激活码
* @return string
*/
function create_guid($namespace = null) {
static $guid = '';
$uid = uniqid ( "", true );
$data = $namespace;
$data .= $_SERVER ['REQUEST_TIME']; // 请求那一刻的时间戳
$data .= $_SERVER ['HTTP_USER_AGENT']; // 获取访问者在用什么操作系统
$data .= $_SERVER ['SERVER_ADDR']; // 服务器IP
$data .= $_SERVER ['SERVER_PORT']; // 端口号
$data .= $_SERVER ['REMOTE_ADDR']; // 远程IP
$data .= $_SERVER ['REMOTE_PORT']; // 端口信息
$hash = strtoupper ( hash ( 'ripemd128', $uid . $guid . md5 ( $data ) ) );
$guid = '{' . substr ( $hash, 0, 8 ) . '-' . substr ( $hash, 8, 4 ) . '-' . substr ( $hash, 12, 4 ) . '-' . substr ( $hash, 16, 4 ) . '-' . substr ( $hash, 20, 12 ) . '}';
return $guid;
}
//使用
echo $key = create_guid ();
PHP 生成唯一的激活码,布布扣,bubuko.com
PHP 生成唯一的激活码