What are some best practices for handling and displaying HTML source code in PHP scripts?

When handling and displaying HTML source code in PHP scripts, it is important to properly escape the HTML content to prevent any potential security vulnerabilities, such as cross-site scripting attacks. One common approach is to use the htmlspecialchars() function to encode special characters in the HTML source code before displaying it on the webpage. 

$htmlSourceCode = "<h1>Hello, World!</h1>";
echo htmlspecialchars($htmlSourceCode);

Keywords

htmlspecialchars htmlentities strip_tags highlight_string syntax highlighting

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