NTOU_pop3_login

<?php
if(isset($_POST["us_email"]) && isset($_POST["us_pw"]) && $_POST["us_email"] != "" && $_POST["us_pw"] != ""){
  try{
    $chk = imap_open("{mail.ntou.edu.tw:110/pop3/novalidate-cert}INBOX",$_POST["us_email"],$_POST["us_pw"]);
  }catch (Exception $e){
    echo 'Caught exception: ',  $e->getMessage(), "\n";
  }
  if($chk =="")
    echo "Status : login failed";
  else
    echo "Status : login success";
}else{ ?>
<div align="center">
<form action="" method="post">
<b>Username</b> : <input type="text" name="us_email"> </br>
<b>Password</b> : <input type="password" name="us_pw"></br>
<input type="submit">
</form>
</div>
<?php } ?>