php 自動生成訂單編号有兩種方法
方法一:
<?php
$dingdanhao = date("Y-m-dH-i-s");
$dingdanhao = str_replace("-","",$dingdanhao);
$dingdanhao .= rand(1000,999999);
print $dingdanhao;
?>
方法二:
<?php
$ddnumber=substr(date("ymdHis"),2,8).mt_rand(100000,999999);
echo $ddnumber;
?>