<?php
/*
Plugin Name: Info
Plugin URI: http://web-profile.com.ua/wordpress/plugins/info/
Description: Plugin shows the number of database queries during the WordPress execution and the amount of time in seconds to generate the page in the admin bar.
Version: 2.2
Author: webvitaly
Author Email: webvitaly(at)gmail.com
Author URI: http://web-profile.com.ua/wordpress/
*/

// add info to admin bar
if ( !function_exists( 'useful_info_admin_bar' ) ) {
	function useful_info_admin_bar() {
		global $wp_admin_bar, $wpdb;
		if ( !is_super_admin() || !is_admin_bar_showing() )
			return;
		//$useful_info = get_num_queries().' sql q.; '.timer_stop().' sec.;';
		$useful_info = sprintf(  '%d q; %.2f sec; %.2f MB;',
			get_num_queries(),
			timer_stop( 0, 3 ),
			memory_get_peak_usage() / 1024 / 1024
        );
		/* Add the main siteadmin menu item */
		$wp_admin_bar->add_menu( array( 'id' => 'useful_info', 'title' => $useful_info, 'href' => FALSE ) );
		//$wp_admin_bar->add_menu( array( 'parent' => 'useful_info', 'title' => $useful_info, 'href' => FALSE ) );
	}
	add_action( 'admin_bar_menu', 'useful_info_admin_bar', 1000 );
}

// add info to source code (deprecated)
if ( !function_exists( 'useful_info_code' ) ) {
	function useful_info_code($atts, $content = null) {
		$useful_info = sprintf(  '%d q; %.2f sec; %.2f MB;',
			get_num_queries(),
			timer_stop( 0, 3 ),
			memory_get_peak_usage() / 1024 / 1024
        );
		echo "\n".'<!-- Info plugin v.2.2 (wordpress.org/extend/plugins/info/) -->'."\n";
		echo '<!-- ========== '.$useful_info.' ========== -->'."\n";
	}
	add_action('wp_footer', 'useful_info_code');
}