Second-hand recycling website developed using PHP supports price range filtering

Using PHP to develop a second-hand recycling website that supports price range screening

With the increase in people's awareness of environmental protection and the promotion of economic development, the second-hand recycling industry has gradually become a popular field. In order to facilitate users to find suitable second-hand products, it is particularly important to develop a second-hand recycling website that supports price range screening. In this article, we will describe how to develop such a website using PHP and provide some code examples.

First of all, we need to build a basic second-hand recycling website framework. This can be achieved by using a PHP framework such as Laravel or CodeIgniter. On the basis of this framework, we can define various models, views and controllers, as well as corresponding routing configurations.

Next, we need to design a database model to store product and price information. A simple design could include two tables: one to store product information and another to store price information. In the product table, we can add fields such as product name, product description, and product pictures. In the price list, we can add fields such as product ID, price, and release time. With this design, we can easily filter price ranges.

The following is a code example using the Laravel framework to demonstrate how to add the function of price range filtering:

First, create a model named "Product" to interact with the product table Interaction. You can use Laravel's Artisan command to generate the model file:

php artisan make:model Product

Next, open the generated Product.php file and add the following code:

<?php

namespace App;

use IlluminateDatabaseEloquentModel;

class Product extends Model
{
    protected $table = 'products';
}

Then, create a model named "Price" Model for interacting with price lists. Similarly, the following command can be used to generate the model file:

php artisan make:model Price

Next, open the generated Price.php file and add the following code:

<?php

namespace App;

use IlluminateDatabaseEloquentModel;

class Price extends Model
{
    protected $table = 'prices';
    
    public function product()
    {
        return $this->belongsTo('AppProduct');
    }
}

Next, we can add a simple Route to handle price range filter requests. In the web.php file, add the following code:

Route::get('/products', 'ProductController@index');

Then, create a controller named "ProductController" to handle the price range filter request. Use the following command to generate the controller file:

php artisan make:controller ProductController

Next, open the generated ProductController.php file and add the following code:

<?php

namespace AppHttpControllers;

use IlluminateHttpRequest;
use AppProduct;
use AppPrice;

class ProductController extends Controller
{
    public function index(Request $request)
    {
        $minPrice = $request->input('min_price');
        $maxPrice = $request->input('max_price');
        
        $products = Product::with('prices')
            ->whereHas('prices', function ($query) use ($minPrice, $maxPrice) {
                $query->whereBetween('price', [$minPrice, $maxPrice]);
            })
            ->get();
        
        return view('products.index', compact('products'));
    }
}

In the above code, we first get the minimum from the request price and maximum price values, and use the whereHas method to limit the query to the specified price range. Then, we pass the filtered product data to the view for display.

Finally, we can create a view file named "index.blade.php" to display the results of price range filtering. In the view file, you can use Laravel's Blade template engine to iteratively display the product list.

To sum up, it is not complicated to use PHP to develop a second-hand recycling website that supports price range screening. With proper database design and the use of appropriate PHP framework, we can easily implement such functionality. The code example given is an example using the Laravel framework, but other frameworks can also be implemented using similar ideas. I hope this article will help you develop such a website!

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