Re: $_SERVER['PHP_SELF'] in a included file

[Stut <stuttle@xxxxxxxxx>]

clive wrote:
> Thanks Vincent,Stut and Olaf. Thats __file___ is exactly what I needed :)
>
> now for another brain teaser for your collective brains, How does a 
> function know what file it was called from.
>
> a.php includes functions.php
>
> in a.php we call function test(); which is declared in functions.php
>
> Is there anyway for test(); to  echo "called from a.php" with out 
> passing 'a.php' or ___FILE___ as a parameter to the function?
>
> Im busy googling now for a answer.

Note that the following function has not been extensively tested, and 
should be treated as such. I wrote this function a long time ago to get 
the calling function from a common error routine. You should be able to 
modify this to get what you want...

function GetCaller($offset = 0)
{
  $trace = debug_backtrace();
  $retval = '';
  if (is_array($trace))
  {
    foreach ($trace as $call)
    {
      if ($offset > 0)
      {
        $offset--;
      }
      else
      {
        if (strlen($retval) == 0)
        {
          $retval = str_replace($GLOBALS['rootdir'], '',
                                $call['file']).':'.$call['line'].' ';
        }
        elseif (isset($call['function']))
        {
          return $retval.(isset($call['class'])
                          ?
                         $call['class'].'::'
                          :
                         '').$call['function'];
        }
      }
    }
  }

  if (strlen($retval) == 0)
    return 'unknown';

  return $retval.'unknown function';
}

Hope it helps.

-Stut

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