Auto reaction facebook + auto refresh token

<?php
@ini_set('output_buffering',0);
@ini_set('max_execution_time',0);
@ignore_user_abort(1);
session_start();
//*** Copyright Dimas Lanjaka   ***//
//*** BOT REACTION FACEBOOK     ***//
//*** AUTO REFRESH TOKEN        ***//
//*** Auto detect Already Liked ***//
//********* Configuration *********//

$user = "username";
//email or username or phone fb
$pass = "password";
//pass fb
$max = "5";
//maximum like per execute
$type = "LOVE";
//LIKE, LOVE, SAD, ANGRY, WOW, HAHA, RANDOM
$useragent = "Mozilla/5.0 (Linux; Android 7.0; Redmi Note 4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.80 Mobile Safari/537.36";
//Useragent yang akan digunakan
//Pastikan sama dengan useragent browser yang anda gunakan di browser

//********* END Configure *********//
$pass = urlencode($pass);
$user = urlencode($user);
global $user;
global $pass;
define("type", strtoupper($type), true);
define("max", $max, true);

 //die(var_dump($user,$pass,$type,$max));
   //error_reporting(0);

function setx($x){
  $X = file_put_contents("results.html", $x, FILE_APPEND | LOCK_EX);
  if ($X){ return false; }
  }
      if (!is_dir("tokens")){
        $oldmask = umask(0);
        mkdir("tokens", 0777);
        umask($oldmask);
      }
      if (!is_dir("cache")){
        $oldmask = umask(0);
        mkdir("cache", 0777);
        umask($oldmask);
      }
function post_data($url, $post=null, $opt=null){
  global $useragent;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
if($post != null){
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
}
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
if (!isset($opt["referer"])){
curl_setopt( $ch, CURLOPT_REFERER, $url );
} else {
  curl_setopt($ch, CURLOPT_REFERER, $opt["referer"]);
}
curl_setopt( $ch, CURLOPT_USERAGENT, $useragent );
if (!file_exists("cache/cookies.txt")){file_put_contents("cache/cookies.txt","");}
$cookie = realpath("cache/cookies.txt");
curl_setopt( $ch, CURLOPT_COOKIEJAR,  $cookie );
curl_setopt( $ch, CURLOPT_COOKIEFILE, $cookie );
$exec = curl_exec($ch);
curl_close($ch);
return $exec;
}

function refresh_token($user,$pass){
  global $useragent;
  $url = "http://dimaslanjaka.000webhostapp.com/instagram/refreshtoken.php?user=".$user."&pass=".$pass."&useragent=".base64_encode($useragent);
  //$_SESSION["url"]=$url;
  $token = file_get_contents($url);
  $json = json_decode($token, true);
  if (json_last_error() === 0) {
  $token = $json["access_token"];
  } else if (ctype_alnum($token) && count($token) > 150){
    $token = $token;
  }
  file_put_contents("tokens/token.txt", $token, LOCK_EX);
  return $token;
}

if (file_exists("tokens/token.txt")){
  $token = file_get_contents("tokens/token.txt");
} else {
refresh_token($user,$pass);
}


$opt["referer"]="https://www.facebook.com";
global $useragent;
$opt["useragent"]=$useragent;

define("token", $token, true);

if(!empty($_GET['token'])) {
$access_token = $_GET['token'];
} elseif (defined("token")){
  $access_token = token;
  } else {
   die('Token Not Found');
   }

if(!empty($_GET['type'])) {
$type = strtoupper($_GET['type']);
} else if (defined("type") && strtolower(type) === "random"){
    $type = [
    "LIKE",
    "LOVE",
    "HAHA",
    "WOW",
    "SAD",
    "ANGRY",
    //"THANKFUL",
    //"PRIDE"
    ];
    shuffle($type);
    $type = $type[array_rand($type)];
   }

if(isset($_GET["max"])) {
   $max = $_GET["max"];
   } else if (defined("max")){
     $max = max;
     }

function gethome($access_token, $max=null){
   global $max; global $opt;
   $url = 'https://graph.facebook.com/v2.11/me/home?fields=id,likes.limit(50).summary(1)&limit='.$max.'&access_token='.$access_token;
   return post_data($url, false, $opt);
}

   $homepost = gethome($access_token, $max);
   $stat = json_decode($homepost, true);
   if (null === $stat || isset($stat["error"])){
    $token = refresh_token($user,$pass);
    $homepost = gethome($token, $max);
    $stat = json_decode($homepost, true);
   }
   if (null !== $stat && count($stat['data']) > 0){
   for ($i = 0; $i <= count($stat['data']); $i++) {
   $id = $stat['data'][$i]['id'];
   if (!empty($id) && isset($stat["data"][$i]["likes"]["summary"]["has_liked"]) && $stat["data"][$i]["likes"]["summary"]["has_liked"] === false){
   $post_react = "https://graph.facebook.com/v2.11/".$id."/reactions?";
   $type_react = array(
   "type"=>strtoupper($type),
   "method"=>"post",
   "access_token"=>$access_token
   );
   $check_post = $post_react . "token=" . $access_token;

      $send = post_data($post_react, $type_react, $opt);

      if (null !== $send){
      $idhtml = 'Content ID : '.$id.' <span style="color:green"> [SUCCESS]</span> Reacted '.$type.' ✓<br>';
      setx($idhtml);
      echo $idhtml;
      }
     } /* if has_liked false */ else {
       echo "Content ID : " . $id . " <span style='color:red'>[FAILED]</span> Has Liked Before.<br/>";
       }
    }
   } // data not empty
   else {
     die("Data Timeline is empty");
     }
     echo '<div><span style="float:right"><a href="results.html">Show Log file</a></span><style>*{word-wrap:break-word;max-width:100%}</style></div>';

?>