Question

Notice: Undefined offset: 3 on line 6

line 6 is the following:

$tmpFilePath = $_FILES['file']['tmp_name'][$i];

Here’s all you should need:

session_start();
//Loop through each file
for($i=0; $i<count($_FILES['file']); $i++) {
  //Get the temp file path
  $tmpFilePath = $_FILES['file']['tmp_name'][$i];

  //Make sure we have a filepath
  if ($tmpFilePath != ""){
    //Setup our new file path
    $newFilePath = "./uploaded_files/" . $_FILES['file']['name'][$i];

    //Upload the file into the temp dir
    if(move_uploaded_file($tmpFilePath, $newFilePath)) {

    echo "Upload Successful!<br />";

}
}
}

Answer 1

Check to see if it exists:

if (isset($_FILES['file']['tmp_name'][$i]))
{
    $tmpFilePath = $_FILES['file']['tmp_name'][$i];
}