PHP检查ctype并在单个if语句中strlen

Question

I have a form that validates First Name, Last Name, and E-mail before processing. It seems however that something isn't working. If I enter an e-mail address and my script validates it, then the page continues regardless of the checks I have in place for First and Last Name.

HTML Form Inputs

First Name <input type="text" id="new_user_fn" name="new_user_fn">
Last Name <input type="text" id="new_user_ln" name="new_user_ln">

PHP Script

$ec = 0;
$fn = trim($_POST['new_user_fn']);
$ln = trim($_POST['new_user_ln']);

if(!ctype_alpha($fn) OR strlen($fn) <= 0){
    $error = "First Name cannot be blank and may only contain letters";
    $ec++;
}

if(!ctype_alpha($ln) OR strlen($ln) <= 0){
    $error = "Last Name cannot be blank and may only contain letters";
    $ec++;
}

Essentially this checks if the $fn is alphabetic and greater than 0 in length to ensure the user filled out the input with valid text. I go on to verify the e-mail address (this part works correctly so it has been omitted from the post) and check the value of $ec.

if($ec > 0){
    die($error);
}else{
    // Finish Processing
}

So if I leave the inputs for "fn" and "ln" blank but supply a valid e-mail address, the script still executes as if $ec = 0.

Am I missing something simple?

Answer 1

Lukas found the issue above. Another $ec = 0 existed that was not commented out. Removing it solved the problem. Thanks all. Always nice to have an extra set of eyes sometimes. Much appreciated!