A PHP Error was encountered

Severity: Notice

Message: Undefined variable: id_product

Filename: controllers/Reviews.php

Line Number: 88

Backtrace:

File: /var/www/html/product-reviews/application/controllers/Reviews.php
Line: 88
Function: _error_handler

File: /var/www/html/product-reviews/index.php
Line: 315
Function: require_once