Why can't php upload images to the server?

Question

PHP

Hello everyone, there was a problem when uploading images to the server through the site form.
Here is the form code:

<form role="form" action="generate.php" method="POST" enctype="multipart/form-data">
          <div class="form-group">
          	<label for="img1" class="sr-only">Выберите изображение "ДО"</label>
          <div class="file_upload btn btn-default">Выбрать фото "ДО"<input type="file" name="img1"></div>
        </div>
          <div class="form-group">
          	<label for="img2" class="sr-only">Выберите изображение "ПОСЛЕ"</label>
          <div class="file_upload btn btn-default">Выбрать фото "ПОСЛЕ"<input type="file" name="img2"></div>
        </div>
          <button type="submit" name="generate" class="btn btn-primary btn-lg btn-max" style="width: 100%;">Получить результат</button>
      </form>

Here is the generate.php handler

<?php
ini_set('display_errors',1);
error_reporting(E_ALL);
$data = $_POST;
if (isset($data['generate'])) {
        if($_FILES['img1']['error'] == 0) { // Нет ошибок
            $name = $_FILES['img1']['name'];
            $name1 = 'do.jpg';
            move_uploaded_file($_FILES['img1']['tmp_name'],$name1);
        }
        if($_FILES['img2']['error'] == 0) { // Нет ошибок
            $name = $_FILES['img2']['name'];
            $name2 = 'posle.jpg';
            move_uploaded_file($_FILES['img2']['tmp_name'],$name2);
        }
}
?>

Doesn't show any errors. Downloads files, but not all, for example, photos taken on the iPhone 5s or iPhone SE are not loaded. Here are links to 2 files that DEFINITELY DO NOT LOAD.
https://yadi.sk/i/6WQVnNao3S5Rbq
https://yadi.sk/i/k-JxYHgt3S5Rc6
Tell me where to drip, I've already rummaged through everything, it should work (it loads other images) but it doesn't work ..

Answer 1

if($_FILES['img1']['error'] == 0) { // Нет ошибок
            $name = $_FILES['img1']['name'];
            $name1 = 'do.jpg';
            move_uploaded_file($_FILES['img1']['tmp_name'],$name1);
        }else{ 
           echo "код ошибки ". $_FILES['img1']['error'];
       }