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Using PHP to develop a second-hand recycling website to support users to share reviews
With the gradual increase in environmental awareness, second-hand recycling has become a more popular way, which can not only reduce pressure on the environment, but also The value of useless items provided by users. In order to better serve users, the second-hand recycling website developed using PHP not only provides the function of commodity trading, but also supports users to share reviews and improve the user's purchasing experience. This article will introduce how to use PHP to develop such a website and provide relevant code examples.
Step one: Create database and tables
First, we need to create a database to store user evaluation information. In the MySQL database, you can use the following statement to create a table named "reviews":
CREATE TABLE reviews (
id INT(11) AUTO_INCREMENT PRIMARY KEY,
user_id INT(11),
product_id INT(11),
rating INT(11),
comment TEXT,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);
In this table, we have several Fields: id (ID used to uniquely identify the evaluation), user_id (ID of the evaluation user), product_id (ID of the evaluated product), rating (rating, which can be 1 to 5), comment (content of the evaluation), created_at ( the time the review was created).
Step 2: Display evaluation information
Next, we need to display evaluation information on the product details page. We can use the following code to get the evaluation information from the database and display it:
4646cc4be897903dd39739d251002bceconnect_errno) {
die('Failed to connect to the database:' . $mysqli ->connect_error);
}
// Get product ID
$product_id = $_GET['product_id'];
// Query evaluation information
$ query = "SELECT * FROM reviews WHERE product_id = '$product_id'";
$result = $mysqli->query($query);
// Display review information
while ($ row = $result->fetch_assoc()) {
echo 'dc6dce4a544fdca2df29d5ac0ea9906b';
echo 'e388a4556c0f65e1904146cc1a846beeRating:' . $row['rating'] . '94b3e26ee717c64999d7867364b1b4a3 ';
echo 'e388a4556c0f65e1904146cc1a846beeEvaluation content:' . $row['comment'] . '94b3e26ee717c64999d7867364b1b4a3';
echo 'e388a4556c0f65e1904146cc1a846beeEvaluation time:' . $row[' created_at'] . '94b3e26ee717c64999d7867364b1b4a3';
echo '16b28748ea4df4d9c2150843fecfba68';
}
// Close the database connection
$mysqli->close() ;
?>
Step 3: Users add reviews
Finally, we need to provide a form for users to add reviews. Users can choose to rate and fill in the evaluation content, and click the submit button to save the evaluation information.
049e31c70975646e1c59a0d0e03ff961connect_errno) {
die('连接数据库失败:' . $mysqli->connect_error);
}
// Insert evaluation information
$query = "INSERT INTO reviews (user_id, product_id, rating, comment)
VALUES ('$user_id', '$product_id', '$rating', '$comment')";
if ($mysqli->query($query) === TRUE) {
echo '评价成功';
} else {
echo '评价失败:' . $mysqli->error;
}
//Close the database connection
$mysqli->close();
}
?>
< ;form action="" method="POST">
5a5c18d2125f3dddc967c8e30ccdb4f6
96329793103595c906e6b417c8dc9de6
7c82f2ddf9f92747b854e94d69e5ed0eRating:8c1ecd4bb896b2264e0711597d40766c
a2d2548c6da4c429f85977e6681a5370
<option value="1">1</option> <option value="2">2</option> <option value="3">3</option> <option value="4">4</option> <option value="5">5</option>
18bb6ffaf0152bbe49cd8a3620346341
b7955e4d57d72216937f8bdac9a5c530Review content:8c1ecd4bb896b2264e0711597d40766c
3074324ae77617554fc4a6cca1d7d97740587128eee8df8f03d0b607fe983014
2fde95773b8f5f556e457b384dfac0eeSubmit65281c5ac262bf6d81768915a4a77ac0
f5a47148e367a6035fd7a2faa965022e
Through the above code example, we can implement a second-hand recycling website, and users can See other users' reviews on the product details page, and you can also add your own reviews. Such a function can not only improve users' purchasing trust, but also provide reference for other users to better meet users' needs.
Summary:
This article introduces how to use PHP to develop a second-hand recycling website that supports users to share reviews. We first created a database and table for storing review information, then displayed the review information on the product details page, and finally provided a form for users to add reviews. Through these functions, we can improve the user purchasing experience and make greater contributions to environmental protection.
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