Subdomain Scanner

<?php
set_time_limit(0);
error_reporting(0);
define("blue","\e[1;34m");
define("red","\e[1;31m");
define("green","\e[1;32m");
define("white","\e[0m");
sleep(2);
@system("clear");
@system('date');
sleep(2);
@system("clear");
echo red."(+) Subdomain Scanner\n";
echo green."(+) Not Change http:// Or https:// \n";
echo blue."(+) Coded By ./EcchiExploit\n\n";
echo white."Site => ".red;
$site = trim(fgets(STDIN,1024));
echo white."Save File => ".red;
$save = trim(fgets(STDIN,1024));
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, "https://api.hackertarget.com/hostsearch/?q=$site");
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
$subdo = curl_exec($curl);
echo green.$subdo."\n";
$file = fopen($save,'a');
echo fwrite($file,$subdo);
fclose($file);
?>