HỏiXin cách khắc phục CURL POST

<?php
$headers=array();
$headers[]='Connection: keep-alive';
$headers[]='Cache-Control: max-age=0';
$headers[]='Content-Type: application/x-www-form-urlencoded';
$headers[]='Save-Data: on';
$headers[]='User-Agent: Nokia515.2/2.0 (10.34) Profile/MIDP-2.1 Configuration/CLDC-1.1 UCWEB/2.0 (Java; U; MIDP-2.0; en-US; Nokia515.2) U2/1.0.0 UCBrowser/9.5.0.449 U2/1.0.0 Mobile UNTRUSTED/1.0';
$headers[]='Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9';
$data=array('account' => 'manhhung', 'password' => 'Manh@hung', 'mem' => 1, 'submit' => 'Đăng nhập');
$ch=curl_init();
curl_setopt_array($ch, array(
  CURLOPT_RETURNTRANSFER => 1,
  CURLOPT_URL => 'https://forum.vdevs.net/login/',
  CURLOPT_HTTPHEADER => $headers,
  CURLOPT_POST => count($data),
  CURLOPT_POSTFIELDS => $data,
  CURLOPT_COOKIEJAR => 'cookie.txt',
  CURLOPT_COOKIEFILE => 'cookie.txt',
  CURLOPT_SSL_VERIFYPEER => false,
  CURLOPT_SSL_VERIFYHOST => false,
  ));
$source=curl_exec($ch);
echo $source;