trackback_url

The timeline below displays how wordpress function trackback_url has changed across different WordPress versions. If a version is not listed, refer to the next available version below.

WordPress Version: 5.4

/**
 * Displays the current post's trackback URL.
 *
 * @since 0.71
 *
 * @param bool $deprecated_echo Not used.
 * @return void|string Should only be used to echo the trackback URL, use get_trackback_url()
 *                     for the result instead.
 */
function trackback_url($deprecated_echo = true)
{
    if (true !== $deprecated_echo) {
        _deprecated_argument(__FUNCTION__, '2.5.0', sprintf(
            /* translators: %s: get_trackback_url() */
            __('Use %s instead if you do not want the value echoed.'),
            '<code>get_trackback_url()</code>'
        ));
    }
    if ($deprecated_echo) {
        echo get_trackback_url();
    } else {
        return get_trackback_url();
    }
}

WordPress Version: 5.3

/**
 * Display the current post's trackback URL.
 *
 * @since 0.71
 *
 * @param bool $deprecated_echo Not used.
 * @return void|string Should only be used to echo the trackback URL, use get_trackback_url()
 *                     for the result instead.
 */
function trackback_url($deprecated_echo = true)
{
    if (true !== $deprecated_echo) {
        _deprecated_argument(__FUNCTION__, '2.5.0', sprintf(
            /* translators: %s: get_trackback_url() */
            __('Use %s instead if you do not want the value echoed.'),
            '<code>get_trackback_url()</code>'
        ));
    }
    if ($deprecated_echo) {
        echo get_trackback_url();
    } else {
        return get_trackback_url();
    }
}

WordPress Version: 4.6

/**
 * Display the current post's trackback URL.
 *
 * @since 0.71
 *
 * @param bool $deprecated_echo Not used.
 * @return void|string Should only be used to echo the trackback URL, use get_trackback_url()
 *                     for the result instead.
 */
function trackback_url($deprecated_echo = true)
{
    if (true !== $deprecated_echo) {
        _deprecated_argument(
            __FUNCTION__,
            '2.5.0',
            /* translators: %s: get_trackback_url() */
            sprintf(__('Use %s instead if you do not want the value echoed.'), '<code>get_trackback_url()</code>')
        );
    }
    if ($deprecated_echo) {
        echo get_trackback_url();
    } else {
        return get_trackback_url();
    }
}

WordPress Version: 4.4

/**
 * Display the current post's trackback URL.
 *
 * @since 0.71
 *
 * @param bool $deprecated_echo Not used.
 * @return void|string Should only be used to echo the trackback URL, use get_trackback_url()
 *                     for the result instead.
 */
function trackback_url($deprecated_echo = true)
{
    if (true !== $deprecated_echo) {
        _deprecated_argument(
            __FUNCTION__,
            '2.5',
            /* translators: %s: get_trackback_url() */
            sprintf(__('Use %s instead if you do not want the value echoed.'), '<code>get_trackback_url()</code>')
        );
    }
    if ($deprecated_echo) {
        echo get_trackback_url();
    } else {
        return get_trackback_url();
    }
}

WordPress Version: 3.9

/**
 * Display the current post's trackback URL.
 *
 * @since 0.71
 *
 * @param bool $deprecated_echo Not used.
 * @return void|string Should only be used to echo the trackback URL, use get_trackback_url()
 *                     for the result instead.
 */
function trackback_url($deprecated_echo = true)
{
    if ($deprecated_echo !== true) {
        _deprecated_argument(__FUNCTION__, '2.5', __('Use <code>get_trackback_url()</code> instead if you do not want the value echoed.'));
    }
    if ($deprecated_echo) {
        echo get_trackback_url();
    } else {
        return get_trackback_url();
    }
}

WordPress Version: 3.7

/**
 * Display the current post's trackback URL.
 *
 * @since 0.71
 *
 * @param bool $deprecated_echo Not used.
 * @return void|string Should only be used to echo the trackback URL, use get_trackback_url() for the result instead.
 */
function trackback_url($deprecated_echo = true)
{
    if ($deprecated_echo !== true) {
        _deprecated_argument(__FUNCTION__, '2.5', __('Use <code>get_trackback_url()</code> instead if you do not want the value echoed.'));
    }
    if ($deprecated_echo) {
        echo get_trackback_url();
    } else {
        return get_trackback_url();
    }
}