Are there any best practices or guidelines for handling HTML special characters in PHP code?

When handling HTML special characters in PHP code, it is important to properly escape them to prevent security vulnerabilities such as cross-site scripting (XSS) attacks. The htmlspecialchars() function in PHP can be used to convert special characters to their HTML entities, ensuring that they are displayed correctly in the browser without causing any harm. 

// Example of escaping HTML special characters in PHP
$unsafe_input = "<script>alert('XSS attack');</script>";
$safe_output = htmlspecialchars($unsafe_input, ENT_QUOTES, 'UTF-8');
echo $safe_output;

Keywords

htmlspecialchars htmlentities strip_tags XSS encoding

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