<?php
$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,'https://www.instagram.com/accounts/login/ajax/');
curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
curl_setopt($ch,CURLOPT_POST,1);
curl_setopt($ch,CURLOPT_COOKIEFILE,'cookie-test.txt');
curl_setopt($ch,CURLOPT_COOKIEJAR,'cookie-test.txt');
curl_setopt($ch,CURLOPT_POSTFIELDS,'username=tama123&password=123tama');
$result = curl_exec($ch);
curl_close($ch);
?>