Hi @39413705,
Your site has alot of bugs:
1. Landing page land on an index page that gives away alot of your "sensitave" info.
2. Calc.php does not validate any user input, the answer all the sudden aprears on top which some one might not even notice it should apear below the calc button and code link does not work.
3. String.php doesn't validate any user input.
4. Hyperlink to Array.php does not work, doesn't validate any user input and array code button doesn't work.
5. Hyperlink to Function.php does not work, function code button doesn't work and when choosing a colour it 1st jumps back to origional colours then you have to click remind again to enforce chosen colours.
Those are jus some issues i picked up on a glance, sorry i'm feeling bit sick here so i didn't go thru your actual code so i would advice you go thru the code also mayb group specific clusters together not have all 1 running code.
Hope this helps...