Add 1 to mysql INT value?

[Dolemite50]

Hello,
I am currently doing things that make a mysql value increase by one. I am wondering if there is a way to do it all in one statement instead of retieving it and then adding one like this:

$sql = SELECT number FROM table;
$chk= mysql_query($sql, $conn) or die(mysql_error());
$number = mysql_result($chk);
$number = $number + 1;

$sql = UPDATE table SET number = '$number';
blah blah

Is there some sort of way to do something like this?:

$sql = UPDATE table SET number++;

[laserlight]

You should be able to do a
UPDATE table SET number=number+1