note 95046 deleted from function.substr by danbrown

Note Submitter: wphampton at gmail dot com ---- For anyone moving code between Windows and Linux I thought this would be worth highlighting. As mentioned in the documentation above: If start parameter is negative, the returned string will start at the start 'th character from the end of string . However, there is different behavior between Windows and Linux in my experience. Take this code as an example: <?php echo substr('abcdef', -7); ?> Windows will print: abcdef Linux will print nothing It seems ridiculous that this scenario would ever happen, but I ran into this problem when working with the mcrypt() functions and variable length key sizes and such. Better written code on my part solved my problem but I thought I should at least contribute my experience.