Question

In PHP, doing a for loop.

Can you loop from A0 to Z9… I know a simple for loop is like

for ($i = 0; $i <= 9; $i += 1) {
// do things
}

But how would it be adding in the alphabet?

Answer 1

You can use chr:

for ($letter = ord('a'); $letter <= ord('z'); ++$letter) {
    for ($number = 0; $number <= 9; ++$number) {
        echo chr($letter) . $number;
    }
}