What are the common pitfalls when using PHP contact forms on WordPress sites?

Common pitfalls when using PHP contact forms on WordPress sites include not properly sanitizing and validating user input, which can lead to security vulnerabilities such as SQL injection or cross-site scripting attacks. To prevent this, make sure to use WordPress functions like sanitize_text_field() and wp_kses() to sanitize and validate user input before processing it. 

// Sanitize and validate user input before processing
$name = sanitize_text_field($_POST['name']);
$email = sanitize_email($_POST['email']);
$message = wp_kses($_POST['message'], array());

Keywords

WordPress PHP contact forms security vulnerabilities form validation email delivery issues

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