Codeigniter重定向不起作用Ubuntu 18.04 LTS Server

Question

Codeigniter version 3.0.3 and PHP version 7.2. I have installed Ubuntu 18.04 Server OS with mysql,php and apache2. When I am running the codeigniter project in localhost, it works fine but not in the server. It loads the login page but does not redirect to given page, it just refreshes the login page when valid credentials are provided. Help to solve this if somebody knows the issue.

Error when loading index page in the server

<div style="border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;">

<h4>A PHP Error was encountered</h4>

<p>Severity: Warning</p>
<p>Message:  sizeof(): Parameter must be an array or an object that implements Countable</p>
<p>Filename: controllers/Login.php</p>
<p>Line Number: 57</p>


<p>Backtrace:</p>
        <p style="margin-left:10px">
        File: /var/www/html/sample/application/controllers/Login.php<br />
        Line: 57<br />
        Function: sizeof            </p>
        <p style="margin-left:10px">
        File: /var/www/html/sample/index.php<br />
        Line: 292<br />
        Function: require_once          </p>
</div>
{"status":true,"message":""}"

This error does not occur in localhost.

enter image description here

Answer 1

In my case, i run the command in terminal

sudo a2enmod rewrite

After that i restarted Apache

systemctl restart apache2

In both cases you will need the admin password

Answer 2

This is a warning, that takes palce on your local too but probably you have disabled warning or you are using a different version of PHP. Since you are parsing json, it won't be able to parse it because the response is mixed with warning so it's not in pure json format.

sizeof takes an array or an object that implements Countable. You can use this function after checking if the variable is an array or not by using this:

is_array($dataVariable)?sizeof($dataVariable):0

this will return zero if the variable is not an array. You can disable warning as well on production.