Código:
Severity: Notice Message: Undefined variable: ret_menu
Código PHP:
<?php defined('BASEPATH') OR exit('No direct script access allowed');
class Menu{
private $arr_menu;
public function __construct($arr){
$this->arr_menu = $arr;
}
public function construirMenu(){
$ret_menu .= '<nav>';
foreach ($this->arr_menu as $option) {
$ret_menu .= "<a href="$option">ucfirst($option)</a>";
}
$ret_menu .= '</nav>';
return $ret_menu;
}
} 
