What are common issues faced when using PHP for contact forms on websites?

One common issue faced when using PHP for contact forms on websites is the lack of proper validation, leading to potential security vulnerabilities such as SQL injection or cross-site scripting attacks. To solve this, always validate and sanitize user input before processing it. 

// Validate and sanitize user input
$name = filter_var($_POST['name'], FILTER_SANITIZE_STRING);
$email = filter_var($_POST['email'], FILTER_SANITIZE_EMAIL);
$message = filter_var($_POST['message'], FILTER_SANITIZE_STRING);

// Process the form data
// Your code to process the form data goes here

Keywords

SQL injection form validation email delivery CSRF protection error handling

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