8870188 发表于 2017-3-31 07:32:38

PHP随机生成n位字符串

  <?php
   //随机生成n位字符串
   functionrand_str($num){
   $str = "qwertyuioplkjhgfdsazxcvbnmQAZWSXEDCRFVTGBYHNUJMIKOLP1234567890";
   $str_len = strlen($str)-1;
   //echo $str_len;
   $s='';
   for($i = 0; $i < $num; $i++) {
   $s.=$str[rand(0, $str_len)];
   }
   echo$s;
   }
   rand_str(32);
  ?>
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