111 lines
2.6 KiB
PHP
111 lines
2.6 KiB
PHP
|
<?php
|
||
|
|
|
||
|
|
namespace fast;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 随机生成类
|
||
|
|
*/
|
||
|
|
class Random
|
||
|
|
{
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 生成数字和字母
|
||
|
|
*
|
||
|
|
* @param int $len 长度
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
public static function alnum($len = 6)
|
||
|
|
{
|
||
|
|
return self::build('alnum', $len);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 仅生成字符
|
||
|
|
*
|
||
|
|
* @param int $len 长度
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
public static function alpha($len = 6)
|
||
|
|
{
|
||
|
|
return self::build('alpha', $len);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 生成指定长度的随机数字
|
||
|
|
*
|
||
|
|
* @param int $len 长度
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
public static function numeric($len = 4)
|
||
|
|
{
|
||
|
|
return self::build('numeric', $len);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 生成指定长度的无0随机数字
|
||
|
|
*
|
||
|
|
* @param int $len 长度
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
public static function nozero($len = 4)
|
||
|
|
{
|
||
|
|
return self::build('nozero', $len);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 能用的随机数生成
|
||
|
|
* @param string $type 类型 alpha/alnum/numeric/nozero/unique/md5/encrypt/sha1
|
||
|
|
* @param int $len 长度
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
public static function build($type = 'alnum', $len = 8)
|
||
|
|
{
|
||
|
|
switch ($type) {
|
||
|
|
case 'alpha':
|
||
|
|
case 'alnum':
|
||
|
|
case 'numeric':
|
||
|
|
case 'nozero':
|
||
|
|
switch ($type) {
|
||
|
|
case 'alpha':
|
||
|
|
$pool = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
|
||
|
|
break;
|
||
|
|
case 'alnum':
|
||
|
|
$pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
|
||
|
|
break;
|
||
|
|
case 'numeric':
|
||
|
|
$pool = '0123456789';
|
||
|
|
break;
|
||
|
|
case 'nozero':
|
||
|
|
$pool = '123456789';
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return substr(str_shuffle(str_repeat($pool, ceil($len / strlen($pool)))), 0, $len);
|
||
|
|
case 'unique':
|
||
|
|
case 'md5':
|
||
|
|
return md5(uniqid(mt_rand()));
|
||
|
|
case 'encrypt':
|
||
|
|
case 'sha1':
|
||
|
|
return sha1(uniqid(mt_rand(), true));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 获取全球唯一标识
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
public static function uuid()
|
||
|
|
{
|
||
|
|
return sprintf(
|
||
|
|
'%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
|
||
|
|
mt_rand(0, 0xffff),
|
||
|
|
mt_rand(0, 0xffff),
|
||
|
|
mt_rand(0, 0xffff),
|
||
|
|
mt_rand(0, 0x0fff) | 0x4000,
|
||
|
|
mt_rand(0, 0x3fff) | 0x8000,
|
||
|
|
mt_rand(0, 0xffff),
|
||
|
|
mt_rand(0, 0xffff),
|
||
|
|
mt_rand(0, 0xffff)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|