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The codeigniter error log file shows only a notification error, but the msg error does not appear on the screen

I literally pull my hair out with it, and its beginning delays the rest of my project, and it really turns me on.

The main thing is that it shows only a notification error and 404 Error in the error log file, and not on the screen, and other notification errors are displayed on the screen.

Why the code-gemnistr will show errors in applications / logs, for example:

    ERROR - 2015-04-18 12:03:24 --> 404 Page Not Found --> uploaded_img

    ERROR - 2015-04-18 12:03:24 --> 404 Page Not Found --> images

    ERROR - 2015-04-18 12:03:24 --> 404 Page Not Found --> images

// Above all three errors are shows only when i visit home page of my website and I am not calling any type of images class

    ERROR - 2015-04-18 11:30:14 --> Severity: Notice  --> Trying to get property of non-object D:\wamp\www\mywebsite\application\views\product_detail.php 2

    ERROR - 2015-04-18 11:30:14 --> Severity: Notice  --> Trying to get property of non-object D:\wamp\www\mywebsite\application\views\product_detail.php 3

   ERROR - 2015-04-18 11:30:14 --> Severity: Notice  --> Trying to get property of non-object D:\wamp\www\mywebsite\application\views\product_detail.php 4

// Above all three errors are shown when i view product_detail.php page of my website.

My index.php is set to:

error_reporting(E_ALL | E_STRICT)

and config:

$config['log_threshold'] = 1;

Here is my Product controller class :

class Product extends Frontend_Controller{

public function __construct(){
    parent::__construct();
    $this->load->model('product_m');
    $this->load->library('cart');
}

public function index($str){
    // fetch the article
    $this->data['product_info'] = $this->product_m->get_product_detail($str);

    // creating breadcrumb navigation path
    $this->data['main_category'] = $this->uri->segment(1);
    $this->data['sub_category'] = $this->uri->segment(2);
    $this->data['current_location'] = str_replace('-', ' ',str_replace('.html', '', $this->uri->segment(3))); 

    // load view
    $this->load->view('product_detail',$this->data);
}

}

when I do var_dump ($ this-> data ['product_info']) ;

object(stdClass)[18]
  public 'id' => string '24' (length=2)
  public 'parent_category' => string 'sweets' (length=6)
  public 'child_category' => string 'chikki-sweets' (length=13)
  public 'product_url' => string 'chikki-bom-bom.html' (length=19)
  public 'product_name' => string 'Chikki Bom Bom' (length=14)
  public 'product_desc' => string '<span style="font-weight: bold; font-size: 24px; font-family: Sans;">Chikki Bom Bom </span><span style="font-weight: bold; font-size: 24px; font-family: Verdana;">Chikki</span><span style="font-weight: bold; font-size: 24px; font-family: Sans;"> </span><span style="font-weight: bold; font-size: 24px; font-family: 'Comic Sans MS';">Bom Bom.</span><div><span style="font-family: 'Comic Sans MS'; font-size: 24px; font-weight: bold; line-height: 34.2857170104981px;"><br></span></div><div><pre><span style="font-f'... (length=1161)
  public 'product_sku' => string '123456789012' (length=12)
  public 'quantity' => string '23' (length=2)
  public 'price' => string '400.00' (length=6)
  public 'offer_price' => string '100.00' (length=6)
  public 'product_date' => string '2015-03-13' (length=10)
  public 'img_url_1' => string 'http://localhost/my_website/uploaded_img/chiki-boom-boom_1.png' (length=63)
  public 'img_url_2' => string 'http://localhost/my_website/uploaded_img/chikki_baadam_1.jpg' (length=61)
  public 'img_url_3' => string 'http://localhost/my_website/uploaded_img/white-rasbhari_1.jpg' (length=62)
  public 'img_url_4' => string 'http://localhost/my_website/uploaded_img/rasgulla_1.jpg' (length=56)
  public 'img_url_5' => null

Here is my product_detail.php code where its error is displayed:

$total_product = (int) $product_info->quantity; // line number 2
$mrp_price = (int) $product_info->price; // line number 3
$offer_price = (int) $product_info->offer_price; // line number 4

var_dump ($ product_info); product_detail.php:

object(stdClass)[18]
 public 'id' => string '24' (length=2)
 public 'parent_category' => string 'sweets' (length=6)
 public 'child_category' => string 'chikki-sweets' (length=13)
 public 'product_url' => string 'chikki-bom-bom.html' (length=19)
 public 'product_name' => string 'Chikki Bom Bom' (length=14)
 public 'product_desc' => string '<span style="font-weight: bold; font-size: 24px; font-family: Sans;">Chikki Bom Bom </span><span style="font-weight: bold; font-size: 24px; font-family: Verdana;">Chikki</span><span style="font-weight: bold; font-size: 24px; font-family: Sans;"> </span><span style="font-weight: bold; font-size: 24px; font-family: 'Comic Sans MS';">Bom Bom.</span><div><span style="font-family: 'Comic Sans MS'; font-size: 24px; font-weight: bold; line-height: 34.2857170104981px;"><br></span></div><div><pre><span style="font-f'... (length=1161)
 public 'product_sku' => string '123456789012' (length=12)
 public 'quantity' => string '23' (length=2)
 public 'price' => string '400.00' (length=6)
 public 'offer_price' => string '100.00' (length=6)
 public 'product_date' => string '2015-03-13' (length=10)
 public 'img_url_1' => string 'http://localhost/my_website/uploaded_img/chiki-boom-boom_1.png' (length=63)
 public 'img_url_2' => string 'http://localhost/my_website/uploaded_img/chikki_baadam_1.jpg' (length=61)
 public 'img_url_3' => string 'http://localhost/my_website/uploaded_img/white-rasbhari_1.jpg' (length=62)
 public 'img_url_4' => string 'http://localhost/my_website/uploaded_img/rasgulla_1.jpg' (length=56)
 public 'img_url_5' => null

, ?

+4
2

semi colon . Set

$config['log_threshold'] = 0;
+1

ini_set('display_errors', 1);

, ENVIRONMENT index.php :

define('ENVIRONMENT', 'development');

error_reporting E_ALL.

0

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