core-scrap.php

class Core{
  //This method use for getting some string from long string.
  private function getStringBetween(String $teks, String $sebelum, String $sesudah): String
      {
          $teks = ' '.$teks;
          $ini = strpos($teks, $sebelum);
          if($ini == 0) return '';
          $ini += strlen($sebelum);
          $panjang = strpos($teks, $sesudah, $ini) - $ini;
          return substr($teks, $ini, $panjang);
      }
}