usort: Upper case before over lower.Why?

[Anon]

I'm using a compare function in conjunction with usort, to sort my multi-dimensional array - which works fine except for one thing....All values that start with an upper case character get precedence over lower case charaters, why?

Example of a sorted array:
Apple
Banana
Orange
apricot
lemon

I want it to sort it like this:
Apple
apricot
Banana
lemon
Orange

This is my comparison function:
function cmp($a,$b)
{
if ($a[fruit] == $b[fruit]) return 0; return ($a[fruit] < $b[fruit]) ? -1 : 1;
}

[[deleted]]

Because you are comparing characters, not letters.

'A' comes before 'a' in the ASCII character set.

You can 'fix' this (it isn't wrong, just not what you want) by using strtolower on both parameters before you compare them.