PHP获取遂机数

  

  function randomkeys($length)

  {

  $pattern='1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLOMNOPQRSTUVWXYZ';

  for($i=0;$i<$length;$i++)

  {

  $key .=$pattern{mt_rand(0,35)}; //生成2018世界杯官网

  }

  return $key;

  }

  echo randomkeys(4);

  ?>

  输入:

  17757

  3794

  97

  另壹方法:

PHP获取遂机数

function randomkeys($length) { $pattern='1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLOMNOPQRSTUVWXYZ'; for($i=0;$i { $key .=$pattern{mt_rand(0,35)}; //生成2018世界杯官网 } return $key; } echo randomkeys(4); ?> 输入: 17757 379...

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oracle生成4位遂机数

产生壹个介于指定范畴之内的38位稀度的遂机数 SQL> SELECT DBMS_RANDOM.VALUE(1, 9999) FROM dual; DBMS_RANDOM.VALUE(1,9999) ------------------------- 4261.38448 假设你是要壹个 4位的整顿数 (也坚硬是最小1000,...

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