php 生成唯一订单号

php 生成唯一订单号4种方法

 

第一种

private function doCreateOrderNumber($time){
  $i=1;
  $dd = date('Ymd',$time);
  $aa = 'OH'.$dd;
  $res = $this->orderModel->query("select sn from sr_order_list where sn like '$aa%' order by id limit 1");
  if(!isset($res[0]['sn'])){
    $i = 1;
  }else{
    $i = (int)substr($res[0]['sn'],9,10) + 1;
  }
  while(true){
    $nsn = 'OH'.$dd.$i;
    $exist = $this->orderModel->query("select id from sr_order_list where sn = '$nsn' ");
    if($exist){
      $i++;
    }else{
      return $nsn;
    }
  }
}

 

第二种

 

$osn = date('Ymd') . str_pad(mt_rand(1, 99999), 5, '0', STR_PAD_LEFT);

echo $osn; //2018070462577


第三种

 

$osn = date('Ymd').substr(implode(NULL, array_map('ord', str_split(substr(uniqid(), 7, 13), 1))), 0, 8);

echo $osn; //2018070499495653

 

第四种

$order_id_main = date('YmdHis') . rand(10000000,99999999);

$order_id_len = strlen($order_id_main);

$order_id_sum = 0;

for($i=0; $i<$order_id_len; $i++){

$order_id_sum += (int)(substr($order_id_main,$i,1));

}
$osn = $order_id_main . str_pad((100 - $order_id_sum % 100) % 100,2,'0',STR_PAD_LEFT);
echo $osn; //201807041332258742313727

 

第五种

 

$code = array('A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J');
$osn = $code[intval(date('Y')) - 2011] . strtoupper(dechex(date('m'))) . date('d') . substr(time(), -5) . substr(microtime(), 2, 5) . sprintf('%02d', rand(0, 99));
echo $osn; //H704764673624352
posted @ 2018-07-04 13:35  tatasix  阅读(1030)  评论(0编辑  收藏  举报