What are the potential pitfalls of using $_POST[] to store form data in PHP?

Using $_POST[] to store form data in PHP can potentially lead to security vulnerabilities such as SQL injection attacks if the data is not properly sanitized. To mitigate this risk, it is important to sanitize and validate the input data before using it in any database queries or other operations. 

// Sanitize and validate form data before using it
$name = isset($_POST['name']) ? htmlspecialchars($_POST['name']) : '';
$email = isset($_POST['email']) ? filter_var($_POST['email'], FILTER_SANITIZE_EMAIL) : '';

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