WordPress Version: 4.1
/**
* Returns core update notification message.
*
* @since 2.3.0
*
* @global string $pagenow The filename of the current screen.
* @return void|false
*/
function update_nag()
{
global $pagenow;
if (is_multisite() && !current_user_can('update_core')) {
return false;
}
if ('update-core.php' === $pagenow) {
return;
}
$cur = get_preferred_from_update_core();
if (!isset($cur->response) || 'upgrade' !== $cur->response) {
return false;
}
$version_url = sprintf(
/* translators: %s: WordPress version. */
esc_url(__('https://wordpress.org/documentation/wordpress-version/version-%s/')),
sanitize_title($cur->current)
);
if (current_user_can('update_core')) {
$msg = sprintf(
/* translators: 1: URL to WordPress release notes, 2: New WordPress version, 3: URL to network admin, 4: Accessibility text. */
__('<a href="%1$s">WordPress %2$s</a> is available! <a href="%3$s" aria-label="%4$s">Please update now</a>.'),
$version_url,
$cur->current,
network_admin_url('update-core.php'),
esc_attr__('Please update WordPress now')
);
} else {
$msg = sprintf(
/* translators: 1: URL to WordPress release notes, 2: New WordPress version. */
__('<a href="%1$s">WordPress %2$s</a> is available! Please notify the site administrator.'),
$version_url,
$cur->current
);
}
wp_admin_notice($msg, array('type' => 'warning', 'additional_classes' => array('update-nag', 'inline'), 'paragraph_wrap' => false));
}