Show selected hosts

readme.md

show-selected-hosts.php

<?php
// Plugin Name: Host Info

function hostinfo_web_host() {
	return apply_filters( 'hostinfo_web_host', gethostname() );
}

function hostinfo_db_host() {
	global $wpdb;
	if ( isset( $wpdb->current_host ) ) {
		$db_host = explode( ':', $wpdb->current_host );
		$db_host = array_shift( $db_host );
	} else {
		$db_host = DB_HOST;
	}

	return apply_filters( 'hostinfo_db_host', $db_host );
}

function hostinfo_admin_bar_menu( $wp_admin_bar ) {

	$hosts = array();

	$hosts[] = hostinfo_web_host();
	$hosts[] = hostinfo_db_host();

	if ( strlen( implode( $hosts ) ) <= 30 ) {

		$wp_admin_bar->add_menu( array(
			'id'    => 'seleted-hosts',
			'title' => implode( ' / ', $hosts ),
		) );

	} else {

		$wp_admin_bar->add_menu( array(
			'id'    => 'seleted-hosts',
			'title' => 'Hosts',
		) );

		foreach ( $hosts as $k => $h ) {
			$wp_admin_bar->add_menu( array(
				'parent' => 'seleted-hosts',
				'id'     => 'seleted-hosts-'. $k,
				'title'  => $h,
			) );

		}

	}

}
add_action( 'admin_bar_menu', 'hostinfo_admin_bar_menu', 100 );

function hostinfo_login_footer() {
	echo hostinfo_web_host() . ' // ' . hostinfo_db_host();
}
// add_action( 'login_footer', 'hostinfo_login_footer', 100 );