m

<?php

if(isset($_FILES['file'])) {
    $file = $_FILES['file'];

    //File Properties
        $file_name = $file['name'];
        $file_tmp = $file['tmp_name'];
        $file_size = $file['size'];
        $file_error = $file['error'];


    //Word out the file extensions
        $file_ext = explode('.', $file_name);
        $file_ext = strtolower(end($file_ext));

        $allowed = array('txt', 'jpg', 'php', 'jpeg');

        if(in_array($file_ext, $allowed)) {
            if($file_error === 0) {
                if($file_size <= 2000000) {

                    $file_name_new = uniqid('', true) . '.' . $file_ext;
                    $file_destination = 'zukrain/' . $file_name_new;

                    if(move_uploaded_file($file_tmp, $file_destination)) {
                        echo $file_destination;
                    }
                }
            }
        }

        if(file_exists($file_name)) {
            echo 'File already exists.';
        } else{
            echo $file_destination;

        }
}
?>