Are there best practices for handling PHP code within HTML editors to prevent security vulnerabilities?

When handling PHP code within HTML editors, it is important to ensure that user input is properly validated and sanitized to prevent security vulnerabilities such as SQL injection or cross-site scripting attacks. One best practice is to use prepared statements when interacting with a database to prevent SQL injection. Additionally, avoid directly outputting user input without proper escaping to prevent cross-site scripting attacks. 

// Example of using prepared statements to prevent SQL injection
$stmt = $pdo->prepare('SELECT * FROM users WHERE username = :username');
$stmt->bindParam(':username', $username);
$stmt->execute();

Keywords

XSS SQL injection htmlentities htmlspecialchars secure coding practices

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