Kill the execution of controller after $this->load->view, Codeigniter - php

Question

Hi I am using codeigniter for site and i am calling a function in a controller through a form in my php page the function call is:
Gear.php:
foreach ($gearArray as $key => $value) {
echo '<tr><td><img id="leftimg" src="'.base_url().''.$value["Product_Image_URL"].'"></td>';
echo '<td>'.$value["Description"].'';
echo '<form method="post" id="addtocart" action="'.site_url('GearController/addorUpdate').'">';
echo '<input type="hidden" name="desc1" value="'.$value["Name"].'">';
echo '<input type="hidden" name="cost1" value="'.$value["Price"].'">';
echo '<input type="submit" value="Add To Cart">';
echo '</form></td>';
}
echo '</table>';
?>
From this the method inside the GearController is called through
action="'.site_url('GearController/addorUpdate').'"
inside the function which is an add to cart function, i am checking whether the item is already in the cart or not and then updating it,once updated i am trying to redirect to a page using:
GearController.php:
public function addorUpdate(){
$this->load->helper('form');
$this->load->library('form_validation');
$this->load->model('CartModel','cart');
$boolean = FALSE;
$Description = $this->input->post('desc1');
$data['cartArray'] = $this->cart->return_cart();
foreach ($data['cartArray'] as $value) {
if($Description==$value['Description']){
$boolean = TRUE;
}
}
if($boolean==TRUE){
$this->updateCart($Description);
}
}
public function updateCart($Description){
$updatearray = array(
'Quantity'=>'Quantity+1',
'Price' => 'Price * Quantity',
);
$this->load->model('CartModel','cart');
$update_order = $this->cart->update_cart($updatearray,$Description);
$data['cartArray'] = $this->cart->return_cart();
$this->load->helper('url');
$this->load->view('cart',$data);
}
The problem here is that everything works fine, the page gets redirected but within seconds it displays a blank screen. I tried return, die and exit. None of it helps. It seems like the controller is executing the code under the $this->load->view. I am telling this because i previously had a function under the
if($boolean==TRUE){
$this->updateCart($Description);
}
That particular code was executed after the redirect. Could someone please help?

Answer 1

This sound like you might have what is call a BOM character at the start of your view file. This character is usually invisible. Make sure that there are not (apparently) black characters at the beginning.
You can also test that updateCart($Description) is running by temporarily putting this code as the first line of the function echo "This is updateCart; Then comment out all the other code in that function. If you see that text on the screen you know the function runs.

Answer 2

This doesn't answer your question but it's bugging me so...
Instead of this mess
foreach ($data['cartArray'] as $value) {
if($Description==$value['Description']){
$boolean = TRUE;
}
}
if($boolean==TRUE){
$this->updateCart($Description);
}
You could simply do this
if(in_array( $Description, array_column($data['cartArray'],'Description'))){
$this->updateCart($Description);
}
You can test it with this code (mockup)
$Description = 'foo';
$data = ['cartArray' => [
['Description' => 'foo'],
['Description' => 'bar'],
]
];
if(in_array( $Description, array_column($data['cartArray'],'Description'))){
echo "found";
}
Outputs
found
Test it here
https://3v4l.org/W5oB5
I think in_array is pretty self evident but here is array_column which is highly useful and often overlooked.