<?
 # this is our sexy routine
 function upload_a_file($field, $path){
 global $HTTP_POST_FILES;
 if ($HTTP_POST_FILES[$field]['name'] != ""){
 $src = $HTTP_POST_FILES[$field]['tmp_name'];
 if (is_uploaded_file($src)){
 $dest = trim($HTTP_POST_FILES[$field]['name']);
 $i=0;
 while(file_exists("$path/$dest")){
 $dest = $i.'_'.trim($HTTP_POST_FILES[$field]['name']);
 $i++;
 }
 copy($src,"$path/$dest");
 return $dest;
 }
 }
 return 0;
 }
 # see if a file has been uploaded
 $path = '/path/to/where/i/want/the/file';
 $file = upload_a_file('myfile',$path);
 if ($file){
 echo "a file has been uploaded here: $path/$file<br><br>";
 }
?>

<form method="post" enctype="multipart/form-data">
Upload a file:<br>
<input type="file" name="myfile"> <input type="submit">
</form>