How does php use curl to receive the POST address, which is a method to create an interface?

This article introduces you to how PHP uses curl to receive the POST address and create an interface. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

The so-called interface, to put it bluntly, is a controller without a view. Both parties just need to define the format and signature to ensure data security. Most of them are json strings. As for the interface document, it is the most important. You can use ShowDoc to write it, search it on Baidu, it is a very useful free open source product

/*这是PHP创建的一个小接口*/
<?php
$mysqli = new mysqli(&#39;localhost&#39;, &#39;root&#39;, &#39;123456&#39;,&#39;interfacetest&#39;);
mysqli_query($mysqli,"set names utf8");
if ($mysqli->connect_error) {
    die(&#39;Connect Error (&#39; . $mysqli->connect_errno . &#39;) &#39;
            . $mysqli->connect_error);
}
$output = array();
$user_by= $_POST[&#39;user_by&#39;];$uid = $_POST["uid"];
if (empty($user_by)) {
    $output = array(&#39;data&#39;=>NULL, &#39;info&#39;=>&#39;this is null!&#39;, &#39;stats&#39;=>1);
    exit(json_encode($output));
}
if ($user_by == &#39;get_userinfo&#39;) {//调用获取用户信息的接口
    //查询数据库
    $sql="select * from user WHERE user_id=$uid";
    $result =$mysqli->query($sql);
    $userInfo = $result -> fetch_row();
    if($userInfo){//如果数据存在输出数据
        $output = array(
            &#39;data&#39; => array(
                &#39;userInfo&#39; => $userInfo,
            ),
            &#39;stats&#39;=>0
        );
    }else{
        $output = array(
            &#39;data&#39; => array(
                &#39;userInfo&#39; => $userInfo,
            ),
            &#39;stats&#39;=>1
        );
    }
    exit(json_encode($output));//把结果反馈给客户端
} 
$mysqli->close();
?>
**********************************************************************************
/*这是一个接口调用的方法（post）*/
$url = &#39;http://localhost/testmysql.php&#39;;
$sl_data=array(
    &#39;uid&#39;=>1,
    &#39;user_by&#39;=>&#39;get_userinfo&#39;
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);//要访问的地址
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 0);//执行结果是否被返回，0是返回，1是不返回
curl_setopt($ch, CURLOPT_POST, 1);// 发送一个常规的POST请求
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($sl_data));
$output = curl_exec($ch);//执行并获取数据
echo $output;
curl_close($ch);

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