UPLOAD de ARQUIVO PHP

<!-- Arquivo PHP de upload -->
<?php

$photos = $_FILES['photos'];
$path = 'uploads/imgs/';

if (!is_dir($path)) {
    mkdir('uploads');
    mkdir($path);
}

for ($i = 0; $i < count($photos['name']); $i++) {
    $j = $i + 1;
    if ( move_uploaded_file($photos['tmp_name'][$i], $path . $photos['name'][$i]) )
        echo "Sucesso ao mover o arquivo {$j} <br>";
    else
        echo "Falha ao mover o arquivo {$j} <br>";
?>

<!-- Arquivo html -->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Upload</title>

    <link rel="stylesheet" href="bootstrap.min.css">
</head>
<body>

    <div class="container">
        <h1>Upload</h1>

        <form class="form" method="POST" action="upload.php" enctype="multipart/form-data">
            <div class="form-group">
                <input type="file" name="photos[]" class="form-control" multiple>
            </div>
            <div class="form-group">
                <button type="submit" class="btn btn-primary">Enviar</button>
            </div>
        </form>

    </div>

</body>
</html>