No of Row

[prokhaled]

If I have this table

ID User
1 A
3 B
6 C
8 D


How can I know the no of row that it's ID=6 ?

the no of row that it's ID=6 here is 3

[cpradio]

One way would be to cycle through all your rows and have a counter figure out which row you are actually on.

// assuming you are connected to your database
$query = mysql_query("select id from table order by id");
for ($i=0;$i<mysql_num_rows($query);$i++)
  if (mysql_result($query,$i,"id") == 6)
    break;

echo $i; 

[prokhaled]

ID is auto and it does not repeat at all

I mean it's=3 becase this row in the third row

[cpradio]

that is what that function will tell you. It will tell you that id 6 is on the 3rd row. Actually it will say 2 b/c it starts at zero.