'ARB'.date('ymd').str_pad($last[0]['orderby'] + 1,4,"0",STR_PAD_LEFT),
例子:
$num=128;
$num=str_pad($num,4,"0",STR_PAD_LEFT); echo $num;
输出
0128
'ARB'.date('ymd').str_pad($last[0]['orderby'] + 1,4,"0",STR_PAD_LEFT),
例子:
$num=128;
$num=str_pad($num,4,"0",STR_PAD_LEFT); echo $num;
输出
0128