How can PHP developers implement escaping techniques to prevent cross-site scripting attacks?

To prevent cross-site scripting attacks, PHP developers can implement escaping techniques by using functions like htmlspecialchars() or htmlentities() to encode user input before displaying it on a webpage. This will convert special characters into their HTML entities, making it safe to output user input without risking XSS attacks. 

$user_input = "<script>alert('XSS attack!');</script>";
$escaped_input = htmlspecialchars($user_input, ENT_QUOTES, 'UTF-8');
echo $escaped_input;

Keywords

PHP escaping techniques cross-site scripting security htmlentities

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