What are some potential pitfalls to be aware of when using the highlight_string function in PHP?

One potential pitfall when using the highlight_string function in PHP is that it may not properly handle HTML entities, leading to potential security vulnerabilities such as cross-site scripting (XSS) attacks. To mitigate this risk, it is important to use the htmlentities function to escape any HTML entities before passing the string to the highlight_string function. 

// Example code snippet to properly escape HTML entities before using highlight_string
$code = "<script>alert('XSS attack');</script>";
$escaped_code = htmlentities($code);
highlight_string($escaped_code);

Keywords

highlight_string PHP syntax highlighting security vulnerabilities code injection

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