What are the potential issues with directly accessing form field names in PHP scripts?

Directly accessing form field names in PHP scripts can lead to security vulnerabilities such as SQL injection and cross-site scripting attacks. To mitigate these risks, it is recommended to sanitize and validate user input before using it in database queries or outputting it to the browser. This can be done by using functions like `htmlspecialchars()` to escape special characters and prevent malicious code execution. 

// Sanitize and validate user input before using it
$name = isset($_POST['name']) ? htmlspecialchars($_POST['name']) : '';
$email = isset($_POST['email']) ? htmlspecialchars($_POST['email']) : '';
// Use $name and $email in your code

Keywords

security vulnerabilities SQL injection cross-site scripting data validation input sanitization

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