$fh = fopen($myFile, 'a') or die("can't open file");
$stringData = "\n".date('Ymd-H:i')."|".$person_id.":".$slice_id.":".$value;
fwrite($fh, $stringData);
$fh = fopen($myFile, 'a') or die("can't open file");
$stringData = "\n".date('Ymd-H:i')."|".$person_id.":".$slice_id.":".$value;
fwrite($fh, $stringData);