note 84667 added to control-structures.for

I have noticed an oddity with the for construct. This code will *not* work as expected: $minimum = 1; $maximum = 5; for ($i=$minimum; $i<$maximum; $i++) { echo "This is iteration ".$i."\n"; } This will output the following (in an infinite loop): This is iteration 1 This is iteration 1 This is iteration 1 ... I assume this is because variables are not 'expressions', although I can't find any documentation that would explain why this does not work. To fix this, you can put double-quotes around the variables, like this: $minimum = 1; $maximum = 5; for ($i="$minimum"; $i<"$maximum"; $i++) { echo "This is iteration ".$i."\n"; } This results in the expected output: This is iteration 1 This is iteration 2 This is iteration 3 This is iteration 4 This is iteration 5 ---- Server IP: 66.207.199.35 Probable Submitter: 209.82.43.120 ---- Manual Page -- http://www.php.net/manual/en/control-structures.for.php Edit -- https://master.php.net/note/edit/84667 Del: integrated -- https://master.php.net/note/delete/84667/integrated Del: useless -- https://master.php.net/note/delete/84667/useless Del: bad code -- https://master.php.net/note/delete/84667/bad+code Del: spam -- https://master.php.net/note/delete/84667/spam Del: non-english -- https://master.php.net/note/delete/84667/non-english Del: in docs -- https://master.php.net/note/delete/84667/in+docs Del: other reasons-- https://master.php.net/note/delete/84667 Reject -- https://master.php.net/note/reject/84667 Search -- https://master.php.net/manage/user-notes.php