11.5.3.8 use script language to provide interactivity

PHP & MySQL. User registration

Step 1. Create webform for register a new user.

Step 2. In webform define attributes for passing data to php script.

Step 3. Write php script for process data of webform.

<?php 
include 'globals.php';
include 'header.php'; 
    $userlogin = $_POST['userlogin'];
    $userpassword = $_POST['userpassword'];
    $usersurname = $_POST['usersurname'];
    $userfirstname = $_POST['userfirstname'];
    $usermobile = $_POST['usermobile'];

    $rezuser = mysqli_query($conn, "
        SELECT userID 
        FROM users 
        WHERE userlogin=$userlogin or usermobile=$usermobile");
    
    $myrow = mysqli_fetch_array($rezuser);
    if (!empty($myrow['userID'])){
        echo "This login or mobile are exist!";
        header("Refresh:2, url='signup.php'");
    }
    else{
    $rezinsert = mysqli_query($conn, "INSERT INTO users(userlogin, userpassword, usersurname, userfirstname, usermobile) VALUE ('$userlogin', '$userpassword', '$usersurname', '$userfirstname', '$usermobile')");
    if(!$rezinsert){
        echo "Error";
    }
    else{
        echo "New user is added successfully";
    }
}
?>

Step 4. Test registration form and check new data in database.