How can I calculate Longitudinal Redundancy Check (LRC)?

Question

I\'ve tried the example from wikipedia: http://en.wikipedia.org/wiki/Longitudinal_redundancy_check

This is the code for lrc (C#):

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Answer 1

I realize that this question pretty old, but I had trouble figuring out how to do this. It's working now, so I figured I should paste the code. In my case, the checksum needs to return as an ASCII string.

public function getLrc($string)
{
    $LRC = 0;
    // Get hex checksum.
    foreach (str_split($string, 1) as $char) {
        $LRC ^= ord($char);
    }
    $hex = dechex($LRC);
    // convert hex to string
    $str = '';
    for($i=0;$i