Are there any best practices for using the highlight_string() function in PHP to avoid errors or unexpected behavior?

When using the `highlight_string()` function in PHP, it is important to ensure that the input string is properly escaped to avoid any potential errors or unexpected behavior. One common issue is when the input string contains PHP code that includes characters like double quotes or special characters, which can break the highlighting functionality. To prevent this, it is recommended to use the `htmlspecialchars()` function to escape the input string before passing it to `highlight_string()`.

// Example of using htmlspecialchars() to escape input string before highlighting
$inputString = '<?php echo "Hello, World!"; ?>';
$escapedString = htmlspecialchars($inputString);
highlight_string($escapedString);