PHP Lama Proses Microtime

<?php
   $time_start = microtime(true);
//usleep(100);
 
   $time_end = microtime(true);
   $time = $time_end - $time_start;
 
   echo "Did nothing in $time seconds\n";
?>

Implementasi pada code Simpan:


if(isset($_GET["pro"]) && $_GET["pro"]=="save"){

  $tanggal=date("Y-m-d");
  $nama_pengujian=$_SESSION["cid"]."-".date("Y-m-d H:i:s");
  $catatan=$_SESSION["cket"];
  $rekapitulasi=$_SESSION["chasil"];
  $durasi=$_SESSION["cdurasi"];
 
  $_SESSION["chitung"]="";
  unset($_SESSION["chitung"]);
  $_SESSION["cdurasi"]="";
  unset($_SESSION["cdurasi"]);
 
 
  $tanggal=date("Y-m-d");
  $jam=date("H:i:s");
 
$sql=" INSERT INTO `$tbhasil` (
`id_hasil` ,`nama_pengujian` ,
`tanggal` ,`jam` ,`keterangan` ,`durasi` ,
`rekapitulasi`
) VALUES (
'', '$nama_pengujian',
'$tanggal','$jam', '$catatan', '$durasi',
'$rekapitulasi'
)";

$simpan=process($conn,$sql);
if($simpan) {echo "<script>alert('Data $id_hasil berhasil disimpan !');document.location.href='?mnu=hasil';</script>";}
else{echo"<script>alert('Data $id_hasil gagal disimpan...');document.location.href='?mnu=hasil';</script>";}

}