note 44691 added to tutorial.useful

The example of a conditional that is chosen above is somewhat awkward. Using if (strpos($a, $b) !== FALSE) to test whether $b is contained in $a will fail exactly if $a begins with $b (since then strpos will return zero which will be cast to 'false' upon comparison with a boolean). It works in the specific case (since the USER_AGENT string will *probably* not start with the letters "MSIE") but it feels like somewhat shoddy programming to rely on that and should probably not be used as a programming sample in a tutorial. A more rigorous way would be if (strpos($a, $b) >= 0) which does the same thing but includes the strpos==0 case. ---- Manual Page -- http://www.php.net/manual/en/tutorial.useful.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+44691 Delete -- http://master.php.net/manage/user-notes.php?action=delete+44691&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+44691&report=yes Search -- http://master.php.net/manage/user-notes.php