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

Simplest way to Toggle case is :

echo "tOGGLE cASE : ".(strtolower($str) ^ strtoupper($str) ^ $str);

Answer 2

OK I know you've already got an answer, but the somewhat obscure strtr() function is crying out to be used for this ;)

$str = "Hello, My Name is Tom";
echo strtr($str, 
           'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz',
           'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ');

Answer 3

Very similar in function to the answer by Mark.

preg_replace_callback(
    '/[a-z]/i',
    function($matches) {
        return $matches[0] ^ ' ';
    },
    $str
)