编码 - 我用PHP从mysql取出数据然后转Json，但是为什么中文显示的是问号？

上面的是我数据库存的数据，采用的utf8_bin编码，开始的时候用的是utf8_unicode_ci，可是还是不行
下面是我的PHP代码

 id = $row["id"];
    $user -> name = $row["name"];
    $user -> address = $row["address"];
    $user -> phonenumber = $row["phonenumber"];
    $data[] = $user;
}

if (function_exists('mysql_set_charset') === false) {
    mysql_query("SET NAMES UTF8",$data);
}else{
    mysql_set_charset('utf8',$data);
}

$response = array(
    'code'    => 200, 
    'message' => 'success for request',
    'data'    => $data,
);

echo urldecode(json_encode($response));

mysql_free_result($response);  //释放

mysql_close();//关闭数据库
?>

最后在浏览器显示的是这个尿性

{
    "code": 200, 
    "message": "success for request", 
    "data": [
        {
            "id": "100", 
            "name": "??", 
            "address": "????", 
            "phonenumber": "13212340001"
        }, 
        {
            "id": "101", 
            "name": "??", 
            "address": "????", 
            "phonenumber": "13512340002"
        }, 
        {
            "id": "100", 
            "name": "??", 
            "address": "????", 
            "phonenumber": "13212340001"
        }, 
        {
            "id": "101", 
            "name": "??", 
            "address": "????", 
            "phonenumber": "13512340002"
        }, 
        {
            "id": "0", 
            "name": "", 
            "address": "", 
            "phonenumber": "0"
        }, 
        {
            "id": "103", 
            "name": "??", 
            "address": "????", 
            "phonenumber": "13512340005"
        }, 
        {
            "id": "103", 
            "name": "??", 
            "address": "????", 
            "phonenumber": "13512340005"
        }
    ]
}

为什么中文显示的是问号呢？我要的Unicode编码的就好了

回复内容：

上面的是我数据库存的数据，采用的utf8_bin编码，开始的时候用的是utf8_unicode_ci，可是还是不行
下面是我的PHP代码

 id = $row["id"];
    $user -> name = $row["name"];
    $user -> address = $row["address"];
    $user -> phonenumber = $row["phonenumber"];
    $data[] = $user;
}

if (function_exists('mysql_set_charset') === false) {
    mysql_query("SET NAMES UTF8",$data);
}else{
    mysql_set_charset('utf8',$data);
}

$response = array(
    'code'    => 200, 
    'message' => 'success for request',
    'data'    => $data,
);

echo urldecode(json_encode($response));

mysql_free_result($response);  //释放

mysql_close();//关闭数据库
?>

最后在浏览器显示的是这个尿性

{
    "code": 200, 
    "message": "success for request", 
    "data": [
        {
            "id": "100", 
            "name": "??", 
            "address": "????", 
            "phonenumber": "13212340001"
        }, 
        {
            "id": "101", 
            "name": "??", 
            "address": "????", 
            "phonenumber": "13512340002"
        }, 
        {
            "id": "100", 
            "name": "??", 
            "address": "????", 
            "phonenumber": "13212340001"
        }, 
        {
            "id": "101", 
            "name": "??", 
            "address": "????", 
            "phonenumber": "13512340002"
        }, 
        {
            "id": "0", 
            "name": "", 
            "address": "", 
            "phonenumber": "0"
        }, 
        {
            "id": "103", 
            "name": "??", 
            "address": "????", 
            "phonenumber": "13512340005"
        }, 
        {
            "id": "103", 
            "name": "??", 
            "address": "????", 
            "phonenumber": "13512340005"
        }
    ]
}

为什么中文显示的是问号呢？我要的Unicode编码的就好了

if (function_exists('mysql_set_charset') === false) {
    mysql_query("SET NAMES UTF8",$data);
}else{
    mysql_set_charset('utf8',$data);
}

这一段应该放在mysql_query之前，另外这两个地方的第二个参数也不应该是$data，而应该是$connect

我之前也遇到过这个问题，加了个这个后就好了mysqli_query($conn,"SET NAMES utf8");

class DBHelper{
    
    public function DBHelper(){}
    
    private static function getConn(){
        $conn = mysqli_connect(DB_HOST,DB_USER,DB_PWD,DB_NAME);
        mysqli_query($conn,"SET NAMES utf8");
        return $conn;
    }
    
    public static function opearting($sql){
        return mysqli_query(self::getConn(),$sql);
        
    }
}

中文的urlencode 这个编码问题，我遇到的，不能直接进行解码。不然会出现乱码的。我使用的方式是。
单独编码。然后在解码，` /**

 * [ReturnUrlencode 用递归的方式来遍历所有的数组并且解析]
 * @param [type] $arr [description]
 */
function ReturnUrlencode($arr){
    foreach ($arr as $key => $value){
        if(is_array($value)){   
            $arr[$key]=ReturnUrlencode($value);
        }else{
            $arr[$key]=urlencode($value);
        }
    }
    return $arr;
}`

##这种方式，输出来的json 中文就不会乱码了。
urldecode(json_encode(ReturnUrlencode($arr)));

if (function_exists('mysql_set_charset') === false) {
    mysql_query("SET NAMES UTF8",$data);
}else{
    mysql_set_charset('utf8',$data);
}

这一句应该放在遍历数据之前吧