<?php 
// Assuming $user->user_registered contains the registration date-time string
$register_date = $user->user_registered;

// Convert the date-time string to a more readable format
// For example, format: "March 10, 2021"
$formatted_date = date("F j, Y", strtotime($register_date));

// Display the formatted date
echo '<h5 class="date-joined-wrapper date-joined">Joined ' . $formatted_date . '</h5>';
?>