Home >php教程 >php手册 >php简单生成随机数的方法,php生成随机数

php简单生成随机数的方法,php生成随机数

WBOY
WBOYOriginal
2016-06-13 08:56:561983browse

php简单生成随机数的方法,php生成随机数

本文实例讲述了php简单生成随机数的方法。分享给大家供大家参考。具体如下:

<&#63;php
/**
 *生成随机数,可用户验证码
 *@param
 */
function randStr($m = 5) {
  $new_str = '';
  $str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwsyz0123456789';
  $max=strlen($str)-1;
  for ($i = 1; $i <= $m; ++$i) {
    $new_str .=$str[mt_rand(0, $max)];
  }
  return $new_str;
}
//测试
$str = randStr(6);
echo $str;

希望本文所述对大家的php程序设计有所帮助。

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn