Simple API Development Example Using ThinkPHP 6.x
This article presents a step‑by‑step tutorial for PHP beginners on building a simple product‑detail API with ThinkPHP 6.x, covering front‑end HTML form, request‑side controller using cURL, and API controller that queries a database and returns JSON data.
This tutorial provides a straightforward example for PHP beginners to create an API that returns product details based on a product ID submitted from the front end, without any authentication, using the ThinkPHP 6.x framework.
Step 1: Front‑end code (view/index/index.html)
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>API接口开发简单小实例-基于thinkphp6.x</title>
</head>
<body>
<form action="http://localhost/index.php/index/index/api_chaxun/" method="post">
<input type="text" name="goods_id">
<input type="submit" value="提交查询">
</form>
</body>
</html>Step 2: Request‑side controller (controller/index.php)
<?php
namespace app\controller;
use app\BaseController;
class Index extends BaseController {
// front‑end view
public function index() {
return view();
}
// submission entry point
public function api_chaxun() {
// http request
$url = 'http://localhost/index.php/index/goods/api/';
// input('goods_id') is the name value from the front‑end form
$ch = curl_init($url . '?goods_id=' . input('goods_id'));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
// execute and store result in $data
$data = curl_exec($ch);
// close connection
curl_close($ch);
// return data
return $data;
}
}
?>Step 3: API controller (controller/goods.php)
<?php
namespace app\controller;
use app\BaseController;
use think\facade\Db;
class Goods extends BaseController {
/**
* Client submits product ID (goods_id) to the API
* API returns the product information
*/
public function api($goods_id = 1) {
// query database and assign to $data
$data = Db::name('goods')->where('id', $goods_id)->find();
// return data as JSON
return json($data); // print_r($data);
}
}
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