read the last line of a file in PHP

If your not a gh33k just move along.
move along, this is not the post you are looking for.

Had a hard to track down bug today where some code that was supposed to return the last line of a log file failed - the logs had recently been rotated and the new file had no lines in it yet. I modified it to create a pointer to the beginning of the file and break out of the infinite loop if the pointer cursor ever gets back to the beginning of the file. With a few minor changes it will work in C C++ C# or Java as they all have something similar to fseek, ftell fclose etc

/**
*
* Reads the last line of a, presumably large, logfile 
* without loading the whole file into memory
* Safe to use for 0 or 1 line files
* 
*
* @param string
* @return string 
*
*/
function readlastline($fileName)
{
  
       $fp = @fopen($fileName, "r");
       $begining = fseek($fp, 0);      
       $pos = -1;
       $t = " ";
       while ($t != "\n") {
             fseek($fp, $pos, SEEK_END);
             if(ftell($fp) == $begining){
              break;
             }
             $t = fgetc($fp);
             $pos = $pos - 1;
       }
       $t = fgets($fp);
       fclose($fp);
       return $t;
}