Khó chỗ nào vậy trời.
<?php
$url = "https://sim.vuiz.net/simsimi.php";
$curl = curl_init($url);
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
$headers = array(
"authority: sim.vuiz.net",
"user-agent: Mozilla/5.0 (Linux; Android 6.0.1; Moto G (4)) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Mobile Safari/537.36",
"content-type: application/x-www-form-urlencoded; charset=UTF-8",
"origin: https://sim.vuiz.net",
"referer: https://sim.vuiz.net/",
"accept-language: vi-VN,vi;q=0.9",
"cookie: __cfduid=d4c95d038309742de4a9fdada2044a7381608964285; PHPSESSID=b48a929f62e11e3d6adef6c71153504c; __zi=3000.SSZzejyD3iiYaAMvqmC2YMMKwxVBG5wRRulvzTbMIDempV_tb1D3tJd2zRsS44cMFyF-kPyNJ90m.1; fpsend=148978",
);
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
$data = "hoi=abccc&lang=vn";
curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
//for debug only!
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
$resp = curl_exec($curl);
curl_close($curl);
var_dump($resp);
?>