this code
if(strpos($line, $extension) !== false)
$line = preg_replace('/12:00:00 AM,AUC\b/','<br />', $line);
$line = preg_replace('/,9\/28\/2013/', '', $line);
echo $line;
should be
if(strpos($line, $extension) !== false) {
$line = preg_replace('/12:00:00 AM,AUC\b/','<br />', $line);
$line = preg_replace('/,9\/28\/2013/', '', $line);
echo $line;
}
you forgot to wrapper them ...