php通过IP获取用户当前所在城市

php获取当前用户所在城市 

 php通过ip免申请api获取所在城市的代码包括省市区sql数据

<?php
function getName($pinyin,$lv){
    $servername = "localhost";
    $username = "root";
    $password = "root";
    $dbname = "ttx";
    try {
        $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
        $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
        // echo "连接数据库成功";exit;
    } catch(PDOException $e) {
        echo "连接数据库失败: " . $e->getMessage();exit;
    }
   // 层级（0：国家；1：省；2：市；3：区）
    $sql = "SELECT * from cg_gym_city_info where pinyin='{$pinyin}' and level_type ={$lv}";
    $stmt = $conn->prepare($sql);
    $stmt->execute();
    $result = $stmt->fetch(PDO::FETCH_ASSOC);
    return isset($result['name'])?$result['name']:"";
}if($_GET['ip']){
    $ip = $_GET['ip'];
}else{
    $ip = $_SERVER['REMOTE_ADDR'];
}
$url = "http://ip-api.io/json/{$ip}";
$response = file_get_contents($url);$data = json_decode($response, true);
$region = $data['region_name'];
$city = $data['city'];
$data['regionCNName']=getName($region,1);
$data['cityCNName']=getName($city,2);var_dump($data);exit;