thx to all -- final release & good nigh! $f=0; if ( $ar[0]>0 and $ar[0]<=12) $f=1; elseif ( $ar[0]>12 and $ar[0]<=14) $f=2; elseif ( $ar[0]>14 and $ar[0]<=18) $f=3; if ( $ar[0]>18) $f=4; 2005/9/21, Robert Cummings <robert@xxxxxxxxxxxxx>: > On Tue, 2005-09-20 at 19:20, adriano ghezzi wrote: > > hy guys this night I'm quite tired > > > > I need a little tip > > > > ok var n could be from 0 to 12 > > > > var f must be set > > f=1 if 0<n<=4 > > f=2 if 5<n<=7 > > f=3 if 8<n<=12 > > f=4 if n>12 > > > > due to my fatigue I coded four if-if else statement, > > > > in other languages it is possible use conditional epression in switch case > > like > > switch $n > > > > case (0<n<=4): > > ........ > > > > but no in php > > > > any suggestion for more professional coding then 4 if/else statement > > For such a small set I'd say that's as good as it gets. However if there > were 100 intervals you could try the following: > > function f( $n ) > { > $map = array > ( > // min, max, f > array( 0, 4, 1 ), > array( 5, 7, 2 ), > array( 8, 12, 3 ), > array( 17, null, 4 ), > ); > > foreach( $map as $criteria ) > { > if( $criteria[0] === null || $n > $criteria[0] > && > $criteria[1] === null || $n <= $criteria[1] ) > { > return $criteria[2]; > } > } > > return null; > } > > I think your code is flawed by the way, the lower endpoints are only > compared for greater than value and not equal to value meaning $n with > value 4 would not match any f value. > > Cheers, > Rob. > -- > .------------------------------------------------------------. > | InterJinn Application Framework - http://www.interjinn.com | > :------------------------------------------------------------: > | An application and templating framework for PHP. Boasting | > | a powerful, scalable system for accessing system services | > | such as forms, properties, sessions, and caches. InterJinn | > | also provides an extremely flexible architecture for | > | creating re-usable components quickly and easily. | > `------------------------------------------------------------' > > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php