How to upload a predefined filename on a server with PHP

[MOzgaf]

hi
am novice at php but I hope that ye will help me.I have a long list of names of text files.these txt files will be used by swf to displayed on the flash file.the problem is to make a user friendly upload interface that make it easy for people to upload the correct or incorrect txt file name and choose to overwrite a certain text file.example:
this is html form:
Upload a file: /file_location/ |Browse button|
Choose file name |fileName1.txt| or|fileName2.tx t|or....
|submit button|

but I cant send the file name option to php to overwrite the existing fileName.
If this is still difficult to understand please tell me.
Thank you.

[Markus]

How are you allowing users to specify the 'correct filename'? an input element?

[MOzgaf]

ill show you better :
html

<form enctype="multipart/form-data" action="upload.php" method="post">
    <input type="hidden" name="MAX_FILE_SIZE" value="1000000" />
    Choose a file to upload: </br>
    <input name="uploaded_file" type="file" /></br>

<select name="nameFile" type="name">
<option value="\mozgaf1.txt">mozgaf</option>
<option value="\mozgaf2.txt">mozgaf2</option>
<option value="\mozgaf3.txt">mozgaf3</option>
</select>


<input type="submit" name="submit" value="Submit" />
  </form>

PhP file looks kind of like this.

<?php
//check that we have a file
if((!empty($_FILES["uploaded_file"])) && ($_FILES['uploaded_file']['error'] == 0)) {
  //Check if the file is TEXT and it's size is less than 350Kb
  $filename = basename($_FILES['nameFile']['name']);
  $ext = substr($filename, strrpos($filename, '.') + 1);
  if (($ext == "txt") && ($_FILES["nameFile"]["type"] == "text/txt") && 
    ($_FILES["uploaded_file"]["size"] < 350000)) {
    //Determine the path to which we want to save this file
      $newname = dirname(__FILE__).'/upload/'.$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["nameFile"]["name"]." already exists";
      }
  } else {
     echo "Error: Only .txt files under 350Kb are accepted for upload";
  }
} else {
 echo "Error: No file uploaded";
}
?>

This way it changes the file name that i pick.