note 69525 added to control-structures.for

On the combination problem again... It seems to me like it would make more sense to go through systematically. That would take nested for loops, where each number was put through all of it's potentials sequentially. The following would give you all of the potential combinations of a four-digit decimal combination, printed in a comma delimited format: for($a=0;$a<10;$a++){ for($b=0;$b<10;$b++){ for($c=0;$c<10;$c++){ for($d=0;$d<10;$d++){ echo $a.$b.$c.$d.", "; } } } } Of course, if you know that the numbers you had used were in a smaller subset, you could just plunk your possible numbers into arrays $a, $b, $c, and $d and then do nested foreach loops as above. - Elizabeth ---- Server IP: 216.194.113.175 Probable Submitter: 65.91.97.66 ---- Manual Page -- http://www.php.net/manual/en/control-structures.for.php Edit -- https://master.php.net/note/edit/69525 Del: integrated -- https://master.php.net/note/delete/69525/integrated Del: useless -- https://master.php.net/note/delete/69525/useless Del: bad code -- https://master.php.net/note/delete/69525/bad+code Del: spam -- https://master.php.net/note/delete/69525/spam Del: non-english -- https://master.php.net/note/delete/69525/non-english Del: in docs -- https://master.php.net/note/delete/69525/in+docs Del: other reasons-- https://master.php.net/note/delete/69525 Reject -- https://master.php.net/note/reject/69525 Search -- https://master.php.net/manage/user-notes.php