如何检查多个isset（$ _ POST ['something']）？

Question

How to check multiple isset($_POST['something'])? with below mentioned code function is call without set anything? what mistake am I doing

My code is here

if(!isset($_POST['username']) || $_POST['email'] || $_POST['password'] || $_POST['confirm_pass'] || $_POST['gender'] || $_POST['country']== "") 

{   $username = $this->input->post('username');
    $email = $this->input->post('email');    
    $password = $this->input->post('password');
    $confirm_password = $this->input->post('confirm_pass');
    $gender = $this->input->post('gender');
    $country = $this->input->post('country');
    $this->signupdata->submit_data($username,$email,$password,$confirm_password,$gender,$country);     
 exit(); }
 $this->load->view('signup_view'); 

Answer 1

A better way to check for empty / not set fields may be like this. Play around this to achieve desired results:

<?php   
    $req = array("username", "email", "password", "confirm_pass", "gender", "country");
    foreach($req AS $r) {
        if(empty($_POST[$r])) {
            $error = $r . " is a required field";
        } else {
            $username = $this->input->post('username');
            $email = $this->input->post('email');    
            $password = $this->input->post('password');
            $confirm_password = $this->input->post('confirm_pass');
            $gender = $this->input->post('gender');
            $country = $this->input->post('country');
            $this->signupdata->submit_data($username,$email,$password,$confirm_password,$gender,$country);     
            exit();
            $this->load->view('signup_view');
        }    
    }
?>