How can PHP developers ensure proper escaping and security measures when working with links and variables?

To ensure proper escaping and security measures when working with links and variables in PHP, developers should use functions like htmlspecialchars() to escape user input to prevent XSS attacks. Additionally, they should validate and sanitize input data before using it in queries or displaying it on the webpage. 

// Escaping user input using htmlspecialchars()
$user_input = "<script>alert('XSS attack');</script>";
$escaped_input = htmlspecialchars($user_input, ENT_QUOTES, 'UTF-8');

echo $escaped_input;

Keywords

XSS htmlspecialchars htmlentities filter_var input validation

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