Creating a Dynamic Copyright in WordPress

dynamic-copyright-WP.md

Source: WPBeginner

// The easy way
$blogname = get_bloginfo();
echo '<div>&copy; ' . date( 'Y' ) . ' $blogname</div>';

/**
 * The DYNAMIC WAY
 */
 function dynamic_copyright() {
    
    global $wpdb;
    
    $copyright_dates = $wpdb->get_results( "SELECT YEAR(min(post_date_gmt)) AS firstdate, YEAR(max(post_date_gmt)) AS lastdate FROM $wpdb->posts WHERE post_status = 'publish' " );
    $output = '';
    $blog_name = get_bloginfo();
    
    if ( $copyright_dates ) {
        $copyright = "&copy; " . $copyright_dates[0]->firstdate;
        if ( $copyright_dates[0]->firstdate != $copyright_dates[0]->lastdate ) {
            $copyright .= " &ndash; " . $copyright_dates[0]->lastdate;
        }
        $output = $copyright . " " . $blog_name;
    }
    return $output;
}