1. Baru-baru ini, PHP digunakan untuk menyambung dengan bahagian IOS Apabila memuat naik berbilang gambar, bahagian APP memanggil antara muka gambar tunggal muat naik latar belakang dalam satu gelung, dan latar belakang menyimpan gambar dan menyimpan laluan dalam pangkalan data. Walau bagaimanapun, keputusan akhir ialah seberapa banyak gambar yang dimuat naik kerana terdapat gambar yang sama dalam pangkalan data, ini bermakna antara muka hanya boleh memproses satu gambar.
Kod hujung belakang adalah seperti berikut (belum dioptimumkan lagi)
//Formatkan tatasusunan $_FILES

     $path = "./upload/post/";

     $valid_formats = array('jpg','png','gif','bmp','jpeg','PNG','JPG','JPEG','GIF','BMP');
     if(!isset($_POST) || !$_SERVER['REQUEST_METHOD'] == 'POST') {
         $mess = [
                 'code' => 0,
                 'message' => '请求数据失败',
                 'result' => ['msg' => '请求参数或者请求方式错误'],
         ];
         echo json_encode($mess);
         exit;
     }
     if($_FILES['ava']['error'] != 0) {
         $mess = [
                 'code' => 0,
                 'message' => '请求数据失败',
                 'result' => ['msg' => '文件上传失败',],
         ];
     }
     $name = $_FILES['ava']['name'];
     $size = $_FILES['ava']['size'];
     if(!strlen($name)) {
         $mess = [
                 'code' => 0,
                 'message' => '请求数据失败',
                 'result' => ['msg' => '文件名不存在'],
         ];
         echo json_encode($mess);
         exit;
     }
     $ext = $this -> getExtension($name);
     if(!in_array($ext,$valid_formats)) {
         $mess = [
                 'code' => 0,
                 'message' => '请求数据失败',
                 'result' => ['msg' => "请上传jpg','png','gif','bmp','jpeg'格式图片(拓展名大写也是可以的)"],
         ];
         echo json_encode($mess);
         exit;
     }
     if($size > (3 * 1024 * 1024)) {
         $mess = [
                 'code' => 0,
                 'message' => '请求数据失败',
                 'result' => ['msg' => '图片大小不应超过3M'],
         ];
         echo json_encode($mess);
         exit;
     }

     $actualName = md5(time().substr(str_replace(" ", '_', $ext),5)).".".$ext;
     $tmp = realpath($_FILES['ava']['tmp_name']);
     if(!is_dir($path)) {
         if(!mkdir($path,0777,true)) {
             $mess = [
                     'code' => 4,
                     'message' => '请求资源失败',
                     'result' => '文件夹创建失败',
             ];
             echo json_encode($mess);
             exit;
         }
     }
     if(!move_uploaded_file($tmp,$path.$actualName)) {
         $mess = [
                 'code' => 0,
                 'message' => '请求数据失败',
                 'result' => ['msg' => '上传文件失败',],
         ];
         echo json_encode($mess);
         exit;
     }
     // 组装图片数据
     $data['url'] = $this -> visitpath.'post/'.$actualName;
     $data['pid'] = $pid;
     $data['atime'] = time();
    $res = model('postgallery') -> insert($data);
    
    if(!$res) {
        $mess = [
                'code' => 0,
                'message' => '请求数据失败',
                'result' => ['msg' => '图片上传失败','data' => $data],
        ];
        echo json_encode($mess);
        exit;
    }
    $data['result']['data']['test'] = $n;
    $mess = [
            'code' => 1,
            'message' => '请求数据成功',
            'result' => ['msg' => '图片成功',],
    ];
    echo json_encode($mess);
    exit;

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