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PHP生成唯一订单号方法算法

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Jun 20, 2016 pm 01:01 PM

在开发购物类电子商务网站的时候，常常涉及到生成订单，如何保证每个订单唯一呢，在PHP开发网站中，PHP生成唯一订单号方法

/**
* 生成唯一订单号
*/
public function build_order_no()
{
    $no = date('Ymd').substr(implode(NULL, array_map('ord', str_split(substr(uniqid(), 7, 13), 1))), 0, 8);
    //检测是否存在
    $db = M('Order');
    $info = $db->where(array('number'=>$no))->find();
    (!empty($info)) && $no = $this->build_order_no();
    return $no;

}

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