public static function updateEmail()
 {
     $error = array('status' => 0, 'msg' => '');
     $post = Core\Input::post();
     if (isset($post['email']) && isset($_SESSION["user"])) {
         $user = User::constructById($_SESSION["user"]);
         if ($user !== null) {
             $user->getEmail();
             $user->update();
         } else {
             $error['status'] = 1;
             $error['msg'] = "User not found: " . $_SESSION["user"];
         }
     } else {
         $error['status'] = 1;
         $error['msg'] = "User not logged in";
     }
     ob_start();
     require VIEWS_PATH . '/contactUpdate.php';
     return ob_get_clean();
 }
<?php

$get = Core\Input::get();
$post = Core\Input::post();
?>
<!DOCTYPE html>
<html lang="en">
    <?php 
require_once __DIR__ . '/components/head.php';
require_once __DIR__ . '/components/header.php';
?>
    <body>
    <?php 
$page = 'details';
$referrerPage = isset($get['referrer']) ? $get['referrer'] : 'home';
?>
    <div class="container">
        <div class="row contactTitleBox">
            <div class="col-md-4">
                <h4><strong>Manage Your Account</strong></h4>
            </div>
            <div class="col-md-8">
                <ul class="nav nav-tabs navbar-right">
                    <li role="presentation"><a href="/~<?php 
echo USER;
?>
/index.php/PetBasket/contactUpdate">Update Info</a></li>
                    <li role="presentation" class="active"><a href="#">My Pets</a></li>
                    <li role="presentation"><a href="/~<?php 
echo USER;
?>