UPLOAD on a company server does not work [duplicate]

I have a simple script that I am trying to implement in a server CENTOS in a company, this server was installed APACHE from scratch, the PHP script is running normally, but the upload code is not sending the file I need. p>

The code is very simple

$uploaddir = '/var/www/uploads/';
$uploadfile = $uploaddir . $_FILES['Arquivo']['name'];
if (move_uploaded_file($_FILES['Arquivo']['tmp_name'], $uploadfile)){
echo "Arquivo Enviado";}
else {echo "Arquivo não enviado";}

On the test server that XAMP is installed on, it works normally, but in this company I can not do anything.

The return of $ _ FILE tells you that it was, but move_uploaded_file does not return

Array
(
    [arquivo] => Array
        (
            [name] => pesos.txt
            [type] => text/plain
            [tmp_name] => /tmp/phpNMb9dx
            [error] => 0
            [size] => 592
        )    
)

Follow the complete return

    arquivo_teste (3).txt
/tmp/phpjAlk3m
0
array(1) {
  ["arquivo"]=>
  array(5) {
    ["name"]=>
    string(21) "arquivo_teste (3).txt"
    ["type"]=>
    string(10) "text/plain"
    ["tmp_name"]=>
    string(14) "/tmp/phpjAlk3m"
    ["error"]=>
    int(0)
    ["size"]=>
    int(592)
  }
}


Arquivo n�o enviado

And the error LOG

 PHP Warning:  move_uploaded_file(): Unable to move '/tmp/phpN60QPx' to '/var/www/uploads/pesos.txt' in /var/www/html/sistema/teste.php on line 22, referer: