Source
File: wp-admin/includes/class-wp-automatic-updater.php
protected function send_email( $type, $core_update, $result = null ) {
update_site_option(
'auto_core_update_notified',
array(
'type' => $type,
'email' => get_site_option( 'admin_email' ),
'version' => $core_update->current,
'timestamp' => time(),
)
);
$next_user_core_update = get_preferred_from_update_core();
// If the update transient is empty, use the update we just performed.
if ( ! $next_user_core_update ) {
$next_user_core_update = $core_update;
}
$newer_version_available = ( 'upgrade' === $next_user_core_update->response && version_compare( $next_user_core_update->version, $core_update->version, '>' ) );
/**
* Filters whether to send an email following an automatic background core update.
*
* @since 3.7.0
*
* @param bool $send Whether to send the email. Default true.
* @param string $type The type of email to send. Can be one of
* 'success', 'fail', 'critical'.
* @param object $core_update The update offer that was attempted.
* @param mixed $result The result for the core update. Can be WP_Error.
*/
if ( 'manual' !== $type && ! apply_filters( 'auto_core_update_send_email', true, $type, $core_update, $result ) ) {
return;
}
switch ( $type ) {
case 'success': // We updated.
/* translators: Site updated notification email subject. 1: Site title, 2: WordPress version. */
$subject = __( '[%1$s] Your site has updated to WordPress %2$s' );
break;
case 'fail': // We tried to update but couldn't.
case 'manual': // We can't update (and made no attempt).
/* translators: Update available notification email subject. 1: Site title, 2: WordPress version. */
$subject = __( '[%1$s] WordPress %2$s is available. Please update!' );
break;
case 'critical': // We tried to update, started to copy files, then things went wrong.
/* translators: Site down notification email subject. 1: Site title. */
$subject = __( '[%1$s] URGENT: Your site may be down due to a failed update' );
break;
default:
return;
}
// If the auto-update is not to the latest version, say that the current version of WP is available instead.
$version = 'success' === $type ? $core_update->current : $next_user_core_update->current;
$subject = sprintf( $subject, wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES ), $version );
$body = '';
switch ( $type ) {
case 'success':
$body .= sprintf(
/* translators: 1: Home URL, 2: WordPress version. */
__( 'Howdy! Your site at %1$s has been updated automatically to WordPress %2$s.' ),
home_url(),
$core_update->current
);
$body .= "\n\n";
if ( ! $newer_version_available ) {
$body .= __( 'No further action is needed on your part.' ) . ' ';
}
// Can only reference the About screen if their update was successful.
list( $about_version ) = explode( '-', $core_update->current, 2 );
/* translators: %s: WordPress version. */
$body .= sprintf( __( 'For more on version %s, see the About WordPress screen:' ), $about_version );
$body .= "\n" . admin_url( 'about.php' );
if ( $newer_version_available ) {
/* translators: %s: WordPress latest version. */
$body .= "\n\n" . sprintf( __( 'WordPress %s is also now available.' ), $next_user_core_update->current ) . ' ';
$body .= __( 'Updating is easy and only takes a few moments:' );
$body .= "\n" . network_admin_url( 'update-core.php' );
}
break;
case 'fail':
case 'manual':
$body .= sprintf(
/* translators: 1: Home URL, 2: WordPress version. */
__( 'Please update your site at %1$s to WordPress %2$s.' ),
home_url(),
$next_user_core_update->current
);
$body .= "\n\n";
// Don't show this message if there is a newer version available.
// Potential for confusion, and also not useful for them to know at this point.
if ( 'fail' === $type && ! $newer_version_available ) {
$body .= __( 'We tried but were unable to update your site automatically.' ) . ' ';
}
$body .= __( 'Updating is easy and only takes a few moments:' );
$body .= "\n" . network_admin_url( 'update-core.php' );
break;
case 'critical':
if ( $newer_version_available ) {
$body .= sprintf(
/* translators: 1: Home URL, 2: WordPress version. */
__( 'Your site at %1$s experienced a critical failure while trying to update WordPress to version %2$s.' ),
home_url(),
$core_update->current
);
} else {
$body .= sprintf(
/* translators: 1: Home URL, 2: WordPress latest version. */
__( 'Your site at %1$s experienced a critical failure while trying to update to the latest version of WordPress, %2$s.' ),
home_url(),
$core_update->current
);
}
$body .= "\n\n" . __( "This means your site may be offline or broken. Don't panic; this can be fixed." );
$body .= "\n\n" . __( "Please check out your site now. It's possible that everything is working. If it says you need to update, you should do so:" );
$body .= "\n" . network_admin_url( 'update-core.php' );
break;
}
$critical_support = 'critical' === $type && ! empty( $core_update->support_email );
if ( $critical_support ) {
// Support offer if available.
$body .= "\n\n" . sprintf(
/* translators: %s: Support email address. */
__( 'The WordPress team is willing to help you. Forward this email to %s and the team will work with you to make sure your site is working.' ),
$core_update->support_email
);
} else {
// Add a note about the support forums.
$body .= "\n\n" . __( 'If you experience any issues or need support, the volunteers in the WordPress.org support forums may be able to help.' );
$body .= "\n" . __( 'https://wordpress.org/support/forums/' );
}
// Updates are important!
if ( 'success' !== $type || $newer_version_available ) {
$body .= "\n\n" . __( 'Keeping your site updated is important for security. It also makes the internet a safer place for you and your readers.' );
}
if ( $critical_support ) {
$body .= ' ' . __( "If you reach out to us, we'll also ensure you'll never have this problem again." );
}
// If things are successful and we're now on the latest, mention plugins and themes if any are out of date.
if ( 'success' === $type && ! $newer_version_available && ( get_plugin_updates() || get_theme_updates() ) ) {
$body .= "\n\n" . __( 'You also have some plugins or themes with updates available. Update them now:' );
$body .= "\n" . network_admin_url();
}
$body .= "\n\n" . __( 'The WordPress Team' ) . "\n";
if ( 'critical' === $type && is_wp_error( $result ) ) {
$body .= "\n***\n\n";
/* translators: %s: WordPress version. */
$body .= sprintf( __( 'Your site was running version %s.' ), get_bloginfo( 'version' ) );
$body .= ' ' . __( 'We have some data that describes the error your site encountered.' );
$body .= ' ' . __( 'Your hosting company, support forum volunteers, or a friendly developer may be able to use this information to help you:' );
// If we had a rollback and we're still critical, then the rollback failed too.
// Loop through all errors (the main WP_Error, the update result, the rollback result) for code, data, etc.
if ( 'rollback_was_required' === $result->get_error_code() ) {
$errors = array( $result, $result->get_error_data()->update, $result->get_error_data()->rollback );
} else {
$errors = array( $result );
}
foreach ( $errors as $error ) {
if ( ! is_wp_error( $error ) ) {
continue;
}
$error_code = $error->get_error_code();
/* translators: %s: Error code. */
$body .= "\n\n" . sprintf( __( 'Error code: %s' ), $error_code );
if ( 'rollback_was_required' === $error_code ) {
continue;
}
if ( $error->get_error_message() ) {
$body .= "\n" . $error->get_error_message();
}
$error_data = $error->get_error_data();
if ( $error_data ) {
$body .= "\n" . implode( ', ', (array) $error_data );
}
}
$body .= "\n";
}
$to = get_site_option( 'admin_email' );
$headers = '';
$email = compact( 'to', 'subject', 'body', 'headers' );
/**
* Filters the email sent following an automatic background core update.
*
* @since 3.7.0
*
* @param array $email {
* Array of email arguments that will be passed to wp_mail().
*
* @type string $to The email recipient. An array of emails
* can be returned, as handled by wp_mail().
* @type string $subject The email's subject.
* @type string $body The email message body.
* @type string $headers Any email headers, defaults to no headers.
* }
* @param string $type The type of email being sent. Can be one of
* 'success', 'fail', 'manual', 'critical'.
* @param object $core_update The update offer that was attempted.
* @param mixed $result The result for the core update. Can be WP_Error.
*/
$email = apply_filters( 'auto_core_update_email', $email, $type, $core_update, $result );
wp_mail( $email['to'], wp_specialchars_decode( $email['subject'] ), $email['body'], $email['headers'] );
}