header function does not work in php

Question

why header function does not work here ? it work successfully on localhost

<?php
    session_start();
    if(isset($_POST['submit'])){
        require_once('models/config.php');  require_once('models/mysql.class.php');
        $username=$_POST['username'];
        $password=$_POST['password'];       
        $obj_Pharmacies=new mysql();     
        $sql_query="SELECT * FROM `sellers_accounts` WHERE`user_name`='$username' AND `password`='$password'";
        $obj_Pharmacies->Execute($sql_query);
        if($obj_Pharmacies->Execute($sql_query)){

            $Pharmacies=$obj_Pharmacies->GetRows();         
            $cookie_seller_name=$Pharmacies[0]['name'];         
            $cookie_seller_user_name=$Pharmacies[0]['user_name'];
            $Pharmacies_number=count($Pharmacies);
            if($Pharmacies_number>=1){
                //$_SESSION['sellerName']=$cookie_seller_name;
                setcookie('sellerName', $cookie_seller_name, time() + (86400 * 30), "/");
                //$_SESSION['sellerUsername']=$cookie_seller_user_name;
                //$_SESSION['sellerName'];
                header("location:plans.php");
          }     
        }


    } 
?>

Enable error reporting. Most likely there is a warning (headers already sent ...) and you just don't see it. — Charlotte Dunois
– Charlotte Dunois, Commented Sep 3, 2016 at 12:19
it works successfully on localhost and my host although when i uploaded the code on my client host it does not work — Mohamed Abd El Baset
– Mohamed Abd El Baset, Commented Sep 3, 2016 at 12:20

Arun · Accepted Answer · 2016-09-03 12:57:32Z

1

$base_url =  "http://" . $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI']; 
   $redirect_url = $base_url."plans.php";
   header("location:$redirect_url");

answered Sep 3, 2016 at 12:57

Arun

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