[RESOLVED] alphabet navigation

laurus

I have a page navigation with the alphabet across the top and if they click on a letter it goes to all items starting with that letter. Great. Now I need to ad a 'see next' at the bottom of each page. If they click on 'see next' it goes to the next letter.

I can't think of an elegant solution. I am trying to set an array that is the alphabet and then nav through that but my problem is that I can't set the internal pointer to the currrent 'letter' the page is on.

Is there a great solution OR how do you set an internal pointer?

thanks

laserlight

You could lookup the position of the current letter in the array, add one, and then get the next letter. You could also make use of [man]chr/man and [man]ord/man so as to do without an array, but wraparound from Z -> A could be a little more tricky.

EDIT:
On second thought, not so tricky. Assuming the current letter $letter is in uppercase, it could be as simple as:

$next_letter = ($letter == 'Z') ? 'A' : chr(ord($letter) + 1);

laurus

Wow! I have no idea what that code does but it works like a charm!

thanks very much. Now I will try to figure out what is happening there.

laserlight

You would need to read up on the ternary operator, as well as chr() and ord() as mentioned earlier, assuming you know ASCII.