<?php
    $stamp = date("Ymdhis");
    $random_id_length = 6;
    $rndid = generateRandomString( $random_id_length );

    $orderid = $stamp ."-". $rndid;
    echo($orderid);

    function generateRandomString($length = 10) {
      $characters = '0123456789';
      $randomString = '';
      for ($i = 0; $i < $length; $i++) {
        $randomString .= $characters[rand(0, strlen($characters) - 1)];
      }
      return $randomString;
    }
?>

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