Tail functionality in PHP

Frequently one needs to get the last few lines of some log files, whether php error logs or Apache logs. Most of these file sizes run into megabytes, which makes it difficult and time consuming to remotely open them using ftp. If you have shell access then you can easily use the *nix ‘tail’ command to return the last ‘n’ lines; or one can use the following if shell access is not enabled on your hosting.

function Tail($filename) {
  return system('tail -n 20 '.$filename);
}

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