<?php
header('Content-Type: text/html; charset=utf-8');
error_reporting(-1);
?>

<form action='***/index.php' enctype="multipart/form-data" method="POST"><input type='file' value='names'><input type='submit' value='загрузить'></form>

<?php
echo "-".$_FILES["names"]["tmp_name"]."-";
?>

<input type='file' value='names'>

<input type='file' name='names'>