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POCodeIgniter - What kind of variable can work during controller is called?
 

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    <p><strong>The first thing I want to ask is how does controller work?</strong> Assuming that I have a controller:</p> <pre><code>&lt;?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); class Home extends CI_Controller { public static $groupId; public function __construct() { } public function index() { $this-&gt;load-&gt;model('product_model'); $data['new_products'] = $this-&gt;product_model-&gt;get_new_products(); $data['featured_products'] = $this-&gt;product_model-&gt;get_featured_products(); $data['sale_products'] = $this-&gt;product_model-&gt;get_sale_products(); $data['template'] = 'index'; $data['title'] = 'Home'; $this-&gt;load-&gt;view('master', $data); } public function group($groupId) { $this-&gt;load-&gt;model('group_model'); $this-&gt;load-&gt;model('product_model'); $groupId = array_pop(explode('-', $groupId)); self::$groupId = $groupId; $data['groupName'] = $this-&gt;group_model-&gt;get_group_name($groupId); $data['allGroupWithQuantity'] = $this-&gt;group_model-&gt;get_group_with_quantity(); $data['products'] = $this-&gt;product_model-&gt;get_products_by_group($groupId); $data['template'] = 'group'; $data['title'] = $data['groupName']-&gt;groupName; $this-&gt;load-&gt;view('master', $data); } public function test() { echo seft:$groupId; } } /* End of file home.php */ /* Location: ./application/modules/front/controllers/home.php */ </code></pre> <p>When I access <code>http://localhost:8080/ci/</code> and <code>http://localhost:8080/ci/television</code> and then type <code>http://localhost:8080/ci/test/</code>, I get white screen. If in the first time controller is called (use method in controller), and in the second time, I think controller don't need reload so from group method, I set value for $groupId and in the test method I can get it easy but I can't. Maybe when I call test method, controller is reloaded.</p> <p><strong>The second thing I want to ask, how to pass $groupId through other method?</strong> Remember! $groupId doesn't store in controller, I get it from url.</p>
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