joomla find category for page

<?php

    $id = JRequest::getVar( 'id', 0 );
    $content = JTable::getInstance('content');
    $content->load($id);
    $cat_id = $content->catid;
    
    $category = JTable::getInstance('category');
    $category->load($cat_id);
    $category_title =  $category->title;
    
    echo " the page category is " . $category_title;

?>