Are there any best practices for handling form submissions in PHP?

When handling form submissions in PHP, it is important to sanitize and validate user input to prevent security vulnerabilities such as SQL injection and cross-site scripting attacks. One best practice is to use PHP's filter_input function to sanitize input data and validate it using functions like filter_var or regular expressions. Additionally, always remember to use prepared statements when interacting with a database to prevent SQL injection. 

<?php
// Sanitize and validate form input
$name = filter_input(INPUT_POST, 'name', FILTER_SANITIZE_STRING);
$email = filter_input(INPUT_POST, 'email', FILTER_VALIDATE_EMAIL);

if ($name && $email) {
    // Process the form submission
    // Insert data into database using prepared statements
} else {
    // Handle form submission errors
}
?>

Keywords

form submissions PHP validation security sanitization

Related Questions