How to remove ETX character from the end of a string? (Regex or PHP)

Question

How can I remove the ETX character (0x03) from the end of a string? I'd either like a function, otherwise I can write a regular expression, all I want to know is how to match the ETX character in a regular expression? trim() doesn't work.

Answer 1

To complete Charles' answer, I had a case where the ETX character was not at the end of the line so I had to use the following code:

$string = preg_replace('/\x03/', '', $string);

Just remove the $ sign.