PHP pagination content - php

Question

I have a list of content that I would have a paging. Until now I was able to count correctly how content we are, then we have 3 content, and imposed a maximum of 2 applications per page, in my index shows the link to go to the next page.
Unfortunately, however, always displays the same content. For example:
http://i62.tinypic.com/156skjo.png
http://i60.tinypic.com/30xcy1l.png
However, I paste the current code, I hope you can help me out. Thank You
<?php require_once 'app/init.php'; ?>
<?php echo View::make('header')->render() ?>
<div class="row">
<!-- START MAIN GRID -->
<?php
// Create a variable imposed where the number of records
// To display on each page
$x_pag = 2;
// Retrieve the current page number.
// Usually you use a querystring
$pag = isset($_GET['pag']) ? $_GET['pag'] : 1;
// Check if $pag is valued and if numeric
// ... Otherwise I assign a value of 1
if (!$pag || !is_numeric($pag)) $pag = 1;
$quest = DB::table('questions')
->count();
// Using a simple mathematical operation define the total number of pages
$all_pages = ceil($quest / $x_pag);
// Calculation of which record start
$first = ($pag - 1) * $x_pag;
$questions = DB::table('questions')
->orderBy('id', 'desc')
->take($x_pag)
->get();
foreach ($questions as $question):
$user = User::find($question->user_id);
?>
<div class="col-md-4 col-lg-4">
<div class="main-grid">
<div class="profile-inner img-responsive" style="background-image: url('images/<?php echo $question->h_image; ?>');border-radius: 10px 10px 0px 0px;">
<img src="<?php echo $user->avatar; ?>" class="small-thumb" >
</div>
<div class="description">
<h5><strong><?php echo $question->user_name; ?></strong>
<?php if (Auth::check() && Auth::user()->id != $question->user_id): ?>
<?php $contact = Contact::find(Auth::user()->id, $question->user_id); ?>
<?php if (!empty($contact) && !empty($contact->accepted)): ?>
( <?php _e('main.remove_contact') ?> )
<?php elseif (!empty($contact)): ?>
( <a href="javascript:EasyLogin.removeContact(<?php echo $question->user_id ?>)" data-contact-id="<?php echo $question->user_id ?>" ><?php _e('main.cancel_contact') ?></a> )
<?php else: ?>
( <?php _e('main.add_contact') ?> )
<?php endif ?>
<?php endif ?>
</h5>
<h3><?php echo $question->h_title; ?>?</h3>
<hr />
Help +
</div>
</div>
</div>
<?php endforeach; ?>
<!-- MAIN GRID END -->
</div>
<?php
// If the total pages are more than 1 ...
// Mold the link to go back and forth between different pages!
if ($all_pages > 1){
if ($pag > 1){
echo "<a href=\"" . $_SERVER['PHP_SELF'] . "?pag=" . ($pag - 1) . "\">";
echo "Back</a> ";
}
if ($all_pages > $pag){
echo "<a href=\"" . $_SERVER['PHP_SELF'] . "?pag=" . ($pag + 1) . "\">";
echo "Next</a>";
}
}
?>
<?php echo View::make('footer')->render() ?>