serializing session array and save it to database

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This is my code for saving purchase order form to database..

function save(&$purchase_data,$purchase_id)
    {
        $success=false;

        //Run these queries as a transaction, we want to make sure we do all or nothing
        $this->db->trans_start();

        if($purchase_data)
        {
            if (!$purchase_id or !$this->exists($purchase_id))
            {  
                //$purchase_data['purchase_id'] = $purchase_id = $purchase_data['purchase_id'];
                $success = $this->db->insert('purchase_order',$purchase_data);
                $post_array['cart']=$this->session->userdata('data');
                /*print_r($post_array);
                exit;*/
                $purchase_id=$this->db->insert_id();
                $i=0;
    foreach($post_array['cart'] as $item)
    {
        //echo "<pre>"; print_r($item); echo "</pre>";
        $query = $this->db->query("SELECT name FROM phppos_items WHERE item_id='".$item['product_id']."'");
        foreach ($query->result() as $row)
{
    $product_name=$row->name;

}
        $product_id=$item['product_id'];
        $quantity=$item['quantity'];
        $unit=$item['unit'];
        $unit_rate=$item['unit_rate'];
        $query = $this->db->query("insert into phppos_productdetails(product_id,product_name,quantity,unit,unit_rate,purchase_id) values ('$product_id','$product_name','$quantity','$unit','$unit_rate','$purchase_id')");

        $i++;
    }
            }
}

Now this code insert multiple rows in productdetails table but I want to serialize this array and want to store whole array in one column. So how do I do it??

asked 59 secs ago

Kedar B

343

serializing session array and save it to database