01.
$maxnum
= 9999;
02.
$startLetter
=
'A'
;
03.
$setZero
= 4;
04.
05.
$result
= mysql_query(
"SELECT CONCAT(CHAR(ORD('"
.
$startLetter
.
"')+FLOOR(IFNULL(MAX(id),0)/$maxnum)),LPAD(IF((IFNULL(MAX(id),0)%$maxnum)+1=0,1,((IFNULL(MAX(id),0))%$maxnum)+1),"
.
$setZero
.
",'0')) memid FROM member"
)
or
die
(mysql_error());
06.
07.
$row
= mysql_fetch_assoc(
$result
);
08.
09.
echo
$row
[
'memid'
];