$fp = fopen("datei.txt", "a");
fputs($fp, $txt_link."|".$txt_description . "\n");
fclose($fp);

$inh = file("datei.txt");
for(i=0;$i<=count($inh)-1;$i++) {
  $teil = explode($inh[$i], "|");
  echo "<a href=\"" . $teil[0] . "\">" . $teil[1] . "</a><br>";
}