What is the issue with characters being replaced by \' in PHP output?

When characters are replaced by '\' in PHP output, it is likely due to escaping characters. This can happen when special characters are not properly handled or encoded in the output. To solve this issue, you can use the htmlspecialchars() function in PHP to encode special characters before outputting them.

// Fix for characters being replaced by '\' in PHP output
echo htmlspecialchars($output);