not able to call a codeigniter function using form_open - php

Question

In codeigniter currently I am working on shopping cart but the problem is I am not able to call a function using form_open in codeigniter.
However, in the same project in another place same code is working properly but in other view form_open it's not working.
Here is my code:
<?php if(count($data)):?>
<?php foreach($data as $head_data) :?>
<div class="row">
<?php echo form_open('Shopingcart/add',['class'=>'form-horizontal']);?>
<div class="col-lg-4 col-md-4 col-sm-4">
<div class="imagebox">
<img src=<?php echo base_url($head_data->p_image)?> class="" alt="picture">
<h2>New This Week</h2>
<p>Browse New Portraits and Abstracts</p>
<p id="id"><?= $head_data->p_id ?></p>
<p id="p_price"><?= $head_data->p_price ?></p>
<p id="p_name"><?= $head_data->p_name ?></p>
<?= anchor('Stuff','View Collections',['class'=>'btn btn-primary'])?>
<?php
echo form_hidden('id', $head_data->p_id);
echo form_hidden('qty', 1);
echo form_hidden('name', $head_data->p_name);
echo form_hidden('price', $head_data->p_price);
?>
<p><?php echo form_submit('', 'Add to Cart'); ?></p>
<?php echo form_close(); ?>
</div>
</div>
<?php endforeach; ?>
<?php else: ?>
<p> No content found</p>
<?php endif ?>

Answer 1

check to see if you are loading the helper.
$this->load->helper('form');
somewhere in your code. preferably in the constructor.
also make sure that error notifications are are turned on, these sorts of problems should give errors that help.

Answer 2

change your code with below one
<?php if(count($data)):?>
<?php foreach($data as $head_data) :?>
<div class="row">
<?php echo form_open('Shopingcart/add',array('class'=>'form-horizontal'));?>
<div class="col-lg-4 col-md-4 col-sm-4">
<div class="imagebox">
<img src=<?php echo base_url($head_data->p_image)?> class="" alt="picture">
<h2>New This Week</h2>
<p>Browse New Portraits and Abstracts</p>
<p id="id"><?= $head_data->p_id ?></p>
<p id="p_price"><?= $head_data->p_price ?></p>
<p id="p_name"><?= $head_data->p_name ?></p>
<?= anchor('Stuff','View Collections',array('class'=>'btn btn-primary'))?>
<?php
echo form_hidden('id', $head_data->p_id);
echo form_hidden('qty', 1);
echo form_hidden('name', $head_data->p_name);
echo form_hidden('price', $head_data->p_price);
?>
<p><?php echo form_submit('', 'Add to Cart'); ?></p>
</div>
</div>
<?php echo form_close(); ?>
<?php endforeach; ?>
<?php else: ?>
<p> No content found</p>
<?php endif ?>