How to update the existing values - php

Question

I am creating an API where I'm inserting product_id, Product_Size, quantity, product_name in an array called product-info.
Now I want to update the other values when product id is already existing.
my code for insertion in controller:
if(!empty($product_info1)){
foreach ($product_info1 as $value) {
$product_id = isset($value->product_id) ? $value->product_id : 0;
$Product_Size = isset($value->Product_Size) ? $value->Product_Size : 0;
$quantity = isset($value->quantity) ? $value->quantity : 0;
$product_name = isset($value->product_name) ? $value->product_name : 0;
if( $ok = 1)
$this->api_details_model->productinventory_track($product_id,$Product_Size,$quantity,$product_name);
{
$api_status="true";
$api_message="Done";
}
// $this->api_details_model->checkProductid($product_id);
}
}
model:
function productinventory_track($product_id,$Product_Size='',$quantity='',$product_name='')
{
if($product_id>=0)
{
$data = array('product_name'=>$product_name,'size_id'=>$Product_Size,'stock_count'=>$quantity,'product_id'=>$product_id);
if($this->db->insert('product_inventory', $data)){ return true; }else{ return false; }
}
please tell me the code for update

Answer 1

Controller:
$productInfo = $this->db->api_details_model->get($product_id);
$productArray['product_name'] = 'yourValue';
$productArray['size_id'] = 'yourValue';
$productArray['stock_count'] = 'yourValue';
// Means that there is no product with that ID in the database
if($productInfo == null)
$this->db->api_details_model->add($productArray);
// It was found an ID in the database
else
$this->db->api_details_model->edit($product_id, $productArray);
Functions in model:
public function add($data)
{
$this->db->insert('product_inventory', $data);
}
public function edit($id, $data)
{
$this->db->where('id', $id)
->update('product_inventory', $data);
}
public function get($id)
{
$this->db->where('id', $id);
return $this->db->get('product_inventory')->row();
}