MaCheck - MacAddress checker + generate tools

<?php
/**
* Macheck - MacAddress checker & Generate
*
* @author shutdown57 < indonesianpeople.shutdwn57@gmail.com >
* @copyright &copy; 2018 JavCode - ZeroByte.id
* @see http://macvendors.com
*/


Class Macheck_0byte{
  public function Banner()
  {
    print
    " __  __            _               _
|  \/  | __ _  ___| |__   ___  ___| | __
| |\/| |/ _` |/ __| '_ \ / _ \/ __| |/ /
| |  | | (_| | (__| | | |  __/ (__|   <
|_|  |_|\__,_|\___|_| |_|\___|\___|_|\_\

  [ MacAddress Vendor Mass Checker ]
+==========================================+

         @Code by : shutdown57
        @Api by  : macvendors.com

+========[ JavCode - ZeroByte.id ]=========+
";
  }

  public function getCheck($mac_address){
  $mac_address = urlencode(str_replace(":","-",$mac_address));
  $url = "http://api.macvendors.com/".$mac_address;
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  $response = curl_exec($ch);
  return $response;
  }
  public function save($f,$i)
  {
    $fp = fopen($f,'a');
    fwrite($fp,$i);
    fclose($fp);
  }
  public function generateMac()
  {
    $hexstr = "1234567890ABCDEF";
      for ($i=0; $i <= 1 ; $i++) {
        $get = rand(0,strlen($hexstr)-1);
        $get1 = rand(0,strlen($hexstr)-1);
        $get2 = rand(0,strlen($hexstr)-1);
        $get3 = rand(0,strlen($hexstr)-1);
        $get4 = rand(0,strlen($hexstr)-1);
        $get5 = rand(0,strlen($hexstr)-1);
        @$bit1.=$hexstr[$get];
        @$bit2.=$hexstr[$get1];
        @$bit3.=$hexstr[$get2];
        @$bit4.=$hexstr[$get3];
        @$bit5.=$hexstr[$get4];
        @$bit6.=$hexstr[$get5];
      }
    return $bit1.":".$bit2.":".$bit3.":".$bit4.":".$bit5.":".$bit6;
  }

}


$ma = new Macheck_0byte;
$ma->Banner();
echo "[?] Apakah mau generate + check Mac Address sekalian bang ? [Y/n] "; $yn = rtrim(fgets(STDIN));
if($yn == "y" || $yn == "Y" || empty($yn))
{
echo "[?] Berapa banyak MacAddress generate ? [::] "; $much= rtrim(fgets(STDIN));
echo "[?] Delay seconds [::] "; $delay=rtrim(fgets(STDIN));
for ($i=1; $i <= $much; $i++) {
  $gmac = $ma->generateMac();
  $check = $ma->getCheck($gmac);
  if(!preg_match("/Vendor not found/",$check)){
echo "[Macheck][".$i."][".date('H:i:s')."] => MAC : $gmac | VENDOR : ".$check."\n";
$ma->save('macheck-'.date('dmY').'.txt',$gmac."|".$check);
}else{
echo "[Macheck][".$i."][".date('H:i:s')."] => MAC : $gmac | VENDOR NOT FOUND \n";
}
//sleep($delay);
}

}else{
echo "[?] Input file [::] "; $file = rtrim(fgets(STDIN));
echo "[?] Delay seconds [::] "; $delay = rtrim(fgets(STDIN));
$f = file_get_contents($file);
$f = explode(PHP_EOL,$f);
$num=1;
echo "[+] Checking ".count($f)." Mac Address in ".$file." ... \n";
foreach($f as $mac)
{
$check = $ma->getCheck($mac);
if(!preg_match("/Vendor not found/",$check)){
echo "[Macheck][".$num++."][".date('H:i:s')."] => MAC : $mac | VENDOR : ".$check."\n";
$ma->save('macheck-'.date('dmY').'.txt',$mac."|".$check);
}else{
echo "[Macheck][".$num++."][".date('H:i:s')."] => MAC : $mac | VENDOR NOT FOUND \n";
}
}

}

?>