How can the order of operations in PHP code affect the success of form data validation and database insertion?

The order of operations in PHP code can affect the success of form data validation and database insertion by ensuring that validation is performed before attempting to insert data into the database. This is crucial to prevent invalid or incomplete data from being inserted. To solve this issue, make sure to validate the form data first, and only proceed with database insertion if the validation is successful.

// Validate form data
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $name = $_POST["name"];
    $email = $_POST["email"];
    
    // Perform validation checks
    if (!empty($name) && !empty($email)) {
        // Insert data into the database
        // Your database insertion code here
    } else {
        echo "Please fill in all required fields.";
    }
}