Add modify date – 4

<?php

add_action ('genesis_entry_footer', 'summit_single_entry_footer_extra' );
function summit_single_entry_footer_extra() {
    $moddatetime = get_the_modified_time('c');
    $moddate = get_the_modified_date();
    $modauthor = get_the_modified_author();
    $outputmodified = '<time class="entry-modified-time" itemprop="dateModified" datetime="' . $moddatetime . '">' . $moddate . '</time>';
    $outputeditor = '<span class="entry-editor" itemprop="editor" itemscope itemtype="http://schema.org/Person"><span class="entry-editor-name" itemprop="name">' . esc_html( $modauthor ) . '</span></span>';
    echo '<div class="entry-footer-extra">';        
           echo '<p>Dernière modification le ' . $outputmodified . ' par ' . $outputeditor . '.</p>';
    echo '</div>';    
};