Copy Function

<?php
//Сheck that we have a file
if((!empty($_FILES["uploaded_file"])) && ($_FILES['uploaded_file']['error'] == 0)) {
  //Check if the file is JPEG image and it's size is less than 350000Kb
  $filename = basename($_FILES['uploaded_file']['name']);
  $ext = substr($filename, strrpos($filename, '.') + 1);
  if (($ext == "jpg") && ($_FILES["uploaded_file"]["type"] == "image/jpeg") && 
    ($_FILES["uploaded_file"]["size"] < 350000000)) {
    //Determine the path to which we want to save this file
      $newname = dirname(__FILE__) . '/Uploads/' . date('Y_m_d-H:i:s') . '-' . $filename;
      //Check if the file with the same name is already exists on the server
      if (!file_exists($newname)) {
        //Attempt to move the uploaded file to it's new place
        if ((move_uploaded_file($_FILES['uploaded_file']['tmp_name'],$newname))) {
           echo "It's done! The file has been saved as: ".$newname;
        } else {
           echo "Error: A problem occurred during file upload!";
        }
      } else {
         echo "Error: File ".$_FILES["uploaded_file"]["name"]." already exists";
      }
  } else {
     echo "Error: Only .jpg images under 350000Kb are accepted for upload";
  }
} else {
 echo "Error: No file uploaded";
}
?>

<?php
$file = 'one.jpg';
$newfile = 'one_thumb.jpg';
 
if (!copy($file, $newfile)) {
    echo "failed to copy $file...\n";
}
?>