Test form:
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<form method="post" enctype="multipart/form-data">
<input type="file" name="file">
<button type="submit">Send</button>
</form>
</body>
</html>
PHP form processing:
<?php
if (!empty($_FILES)) {
if (move_uploaded_file($_FILES['file']['tmp_name'], "upload/{$_FILES['file']['name']}")) {
echo 'Success';
} else {
echo 'Error';
}
}
?>