Switch character case, php

Question

How can I swap around / toggle the case of the characters in a string, for example:

$str = \"Hello, My Name is Tom\";

After I run the code

Answer 1

If your string is ASCII only, you can use XOR:

$str = "Hello, My Name is Tom";

print strtolower($str) ^ strtoupper($str) ^ $str;

Outputs:

hELLO, mY nAME IS tOM