php实现随机生成易于记忆的密码

本文实例讲述了php实现随机生成易于记忆的密码。分享给大家供大家参考。具体实现方法如下：

这里通过预定义一些单词，让php随机从这些单词中选择进行组合生成密码

    function random_readable_pwd($length=10){
      // the wordlist from which the password gets generated 
      // (change them as you like)
      $words = 'dog,cat,sheep,sun,sky,red,ball,happy,ice,';
      $words .= 'green,blue,music,movies,radio,green,turbo,';
      $words .= 'mouse,computer,paper,water,fire,storm,chicken,';
      $words .= 'boot,freedom,white,nice,player,small,eyes,';
      $words .= 'path,kid,box,black,flower,ping,pong,smile,';
      $words .= 'coffee,colors,rainbow,plus,king,tv,ring';
      // Split by ",":
      $words = explode(',', $words);
      if (count($words) == 0){ die('Wordlist is empty!'); }
      // Add words while password is smaller than the given length
      $pwd = '';
      while (strlen($pwd) < $length){
        $r = mt_rand(0, count($words)-1);
        $pwd .= $words[$r];
      }
      // append a number at the end if length > 2 and
      // reduce the password size to $length
      $num = mt_rand(1, 99);
      if ($length > 2){
        $pwd = substr($pwd,0,$length-strlen($num)).$num;
      } else { 
        $pwd = substr($pwd, 0, $length);
      }
      return $pwd;
    }
    //使用范例：
    random_readable_pwd(10) => returns something like: pingwater6, radiohap28, sunwhite84, happykid44, etc...

希望本文所述对大家的php程序设计有所帮助。