How to use PHP to develop the reservation ordering function of the food ordering system?

With the development of the catering industry, more and more restaurants have begun to provide reservation ordering services, which not only provides customers with a more convenient dining experience, but also provides restaurants with A more orderly and efficient management method. This article will introduce how to use PHP to develop the reservation ordering function of the food ordering system.

1. The basic structure of the reservation and ordering function

The basic structure of the reservation and ordering function includes two main parts: the reservation system and the ordering system. The reservation system is mainly responsible for managing customers' reservation information, including table reservations, customer information management, etc.; while the ordering system is mainly responsible for customers' ordering operations, dish management, etc.

2. Implementation of reservation system

1. Database design

Create database tables: reservation, customer, table

① reservation table

id: self-increasing primary key

customer_id: foreign key, associated with the id field of the customer table

table_id: foreign key, associated with the id field of the table table

reservation_time: Reservation time

status: Reservation status, 0 means not used, 1 means used

② customer table

id: self-increasing primary key

name: Customer name

phone: Customer mobile phone number

email: Customer email address

③table table

id: auto-increment primary key

table_number：Table number

table_name：Table name

capacity：Table capacity

2. Reservation function implementation

In the reservation In the system, functions such as table reservation and table status query need to be implemented.

(1) Table reservation

Here is taking a new reservation as an example. Before making a reservation, you need to first determine whether the table has been reserved, determine whether the reservation is successful and return the corresponding information.

$conn = mysqli_connect("localhost", "root", "root", "test_db");
if (!$conn) {
die( "Connection failed: " . mysqli_connect_error());
}

$reservation_time = $_POST['reservation_time'];
$customer_name = $_POST['customer_name'];
$ customer_phone = $_POST['customer_phone'];
$table_id = $_POST['table_id'];

$sql_check = "SELECT * FROM reservation WHERE table_id='$table_id' AND reservation_time='$ reservation_time'";
$result_check = mysqli_query($conn, $sql_check);

if (mysqli_num_rows($result_check) > 0) {
echo 'The table has been reserved at this time , please select another time. ';
} else {
$sql_customer = "INSERT INTO customer (name, phone) VALUES ('$customer_name', '$customer_phone')";
mysqli_query($conn, $sql_customer);
$customer_id = mysqli_insert_id($conn);
$sql_reservation = "INSERT INTO reservation (customer_id, table_id, reservation_time, status) VALUES ('$customer_id', '$table_id', '$reservation_time', 0)" ;
mysqli_query($conn, $sql_reservation);
echo 'Reservation successful. ';
}

mysqli_close($conn);
?>

(2) Query the table status

You can query the table status by querying the reservation table To achieve this, 0 means not used, 1 means used.

$conn = mysqli_connect("localhost", "root", "root", "test_db");
if (!$conn) {
die( "Connection failed: " . mysqli_connect_error());
}

$table_id = $_POST['table_id'];
$reservation_time = $_POST['reservation_time'];

$sql_check = "SELECT * FROM reservation WHERE table_id='$table_id' AND reservation_time='$reservation_time'";
$result_check = mysqli_query($conn, $sql_check);

if (mysqli_num_rows ($result_check) > 0) {
$row = mysqli_fetch_assoc($result_check);
$status = $row['status'];
if ($status == 0) {

echo '该餐桌未被预约。';

} else {

echo '该餐桌已被预约。';

}
} else {
echo 'The table has not been reserved. ';
}

mysqli_close($conn);
?>

3. Implementation of the ordering system

In the ordering system, it is necessary Realize menu management, order management, payment and other functions.

1. Database design

Create database tables: dish, order

① dish table

id: self-increasing primary key

dish_name: dish name

price: dish price

description: dish description

image: dish picture

② order table

id: self-increasing primary key

customer_id: foreign key, associated with the id field of the customer table

table_id: foreign key, associated with the id field of the table table

dish_info: order Details

status: order status, 0 means not completed, 1 means completed

order_time: order time

total_price: total order price

2. Dish Management

Dish management includes operations such as adding, modifying, and deleting dishes.

(1) Newly added dishes

Here is an example of new dishes.

$conn = mysqli_connect("localhost", "root", "root", "test_db");
if (!$conn) {
die( "Connection failed: " . mysqli_connect_error());
}

$dish_name = $_POST['dish_name'];
$price = $_POST['price'];
$ description = $_POST['description'];
$image = $_POST['image'];

$sql = "INSERT INTO dish (dish_name, price, description, image) VALUES ('$ dish_name', $price, '$description', '$image')";

if (mysqli_query($conn, $sql)) {
echo "Dish added successfully.";
} else {
echo "Error: " . mysqli_error($conn);
}

mysqli_close($conn);
?>

(2) Dishes modification

Here is an example of modifying the price of a dish.

$conn = mysqli_connect("localhost", "root", "root", "test_db");
if (!$conn) {
die( "Connection failed: " . mysqli_connect_error());
}

$id = $_POST['id'];
$price = $_POST['price'];

$sql = "UPDATE dish SET price=$price WHERE id=$id";

if (mysqli_query($conn, $sql)) {
echo "The dish was modified successfully.";
} else {
echo "Error: " . mysqli_error($conn);
}

mysqli_close($conn);
?>

（3 )Dish deletion

Here is an example of deleting a dish.

$conn = mysqli_connect("localhost", "root", "root", "test_db");
if (!$conn) {
die( "Connection failed: " . mysqli_connect_error());
}

$id = $_POST['id'];

$sql = "DELETE FROM dish WHERE id=$id ";

if (mysqli_query($conn, $sql)) {
echo "The dish was deleted successfully.";
} else {
echo "Error: " . mysqli_error($conn );
}

mysqli_close($conn);
?>

3. Order management

Order management includes the addition of orders , modify, delete and other operations.

(1) New orders

Here we take new orders as an example.

$conn = mysqli_connect("localhost", "root", "root", "test_db");
if (!$conn) {
die( "Connection failed: " . mysqli_connect_error());
}

$table_id = $_POST['table_id'];
$customer_id = $_POST['customer_id'];
$ dish_info = $_POST['dish_info'];
$total_price = $_POST['total_price'];

$sql = "INSERT INTO order (customer_id, table_id, dish_info, status, order_time, total_price) VALUES ('$customer_id', '$table_id', '$dish_info', 0, now(), $total_price)";

if (mysqli_query($conn, $sql) ) {
echo "The order was added successfully.";
} else {
echo "Error: " . mysqli_error($conn);
}

mysqli_close($conn);
?>

(2) Order modification

Here is an example of modifying the order status.

$conn = mysqli_connect("localhost", "root", "root", "test_db");
if (!$conn) {
die( "Connection failed: " . mysqli_connect_error());
}

$id = $_POST['id'];
$status = $_POST['status'];

$sql = "UPDATE order SET status=$status WHERE id=$id";

if (mysqli_query($conn, $sql)) {
echo "Order Modification successful.";
} else {
echo "Error: " . mysqli_error($conn);
}

mysqli_close($conn);
?>

(3) Order deletion

Here is an example of deleting an order.

$conn = mysqli_connect("localhost", "root", "root", "test_db");
if (!$conn) {
die( "Connection failed: " . mysqli_connect_error());
}

$id = $_POST['id'];

$sql = "DELETE FROM order WHERE id=$id";

if (mysqli_query($conn, $sql)) {
echo "The order was deleted successfully.";
} else {
echo "Error: " . mysqli_error($conn);
}

mysqli_close($conn);
?>

4. Summary

Reservation ordering function Implementation requires the combination of the reservation system and the ordering system. The reservation system is mainly responsible for managing the customer's reservation information, while the ordering system is mainly responsible for the customer's ordering operation, dish management, etc. In PHP development, these functions can be realized by designing the database and using relevant PHP functions. At the same time, attention must be paid to data security and user experience to make the reservation and ordering function more complete.

The above is the detailed content of How to use PHP to develop the reservation ordering function of the food ordering system?. For more information, please follow other related articles on the PHP Chinese website!