create an alias of a file to another file

[assonitis]

I have downloaded a file manager from the coding library. It's generaly a very good file manager, except it has many bugs :-)

I have corrected all of them except one that could do it.
It is a function for creating a file alias.
the code is as follows....
//$alias_to is the file name to be aliased to
//get_file_path($fp) returns the path of the file to be aliased.

$allowalias = true;
$filealiases = true;
$filealiasext = 'als';

 if ($allowalias && $filealiases && ($act == "alias") && ($subdir != $trashcan))
     {
          if (isset($file) && ($file != ""))
          {
              if (!checkFileName($file) || (($subdir == "") && ($file == $trashcan)))
              {
                   redirectWithMsg("warning", "als1");
              }
              else
              {
                  $fp = getFilePath($file);
						 $fp_alias = $fp.".".$filealiasext;
						 //echo $fp_alias;
						 if (!is_dir($fp))
                  {
                  	if ($aliasto != "")
                    {
                    	if ($fda = @fopen($fp_alias, "w"))
                       {
                       	@fwrite($fda, $aliasto);
                          @fclose($fda);
                          redirectWithMsg("info", "als2", $file);
                       }
                       else
                       {
                       	redirectWithMsg("error", "als3", $file);
                       }
                    }
                    else
                    {
                    	if (@is_readable($fp_alias))
                       {
                       	@unlink($fp_alias);
                          redirectWithMsg("info", "als4", $file);
                       }
                       else
                       {
                       	redirectWithMsg("info", "als5", $file);
                       }
                    }
                 }
               	else
                 {
                 	redirectWithMsg("error", "als6");
                 }
              }
           }
           else
           {
           	redirectWithMsg("warning", "als7");
           }
       }

Can someone give me a hint? If not anyone knows a script that can to it?

Thanks