studio11/wp-content/plugins/debug-queries/debug_queries.php

<?php
/**
 * @package Debug Queries
 * @author Frank B&uuml;ltge
 */
 
/*
Plugin Name: Debug Queries
Plugin URI: http://bueltge.de/wordpress-performance-analysieren-plugin/558/
Description: List query-actions only for admins; for debug purposes
Author: Frank B&uuml;ltge
Author URI: http://bueltge.de/
Version: 1.0.1
License: GPLv2
Last Change: 23.03.2011 21:00
*/

//avoid direct calls to this file, because now WP core and framework has been used
if ( !function_exists( 'add_action' ) ) {
	header( 'Status: 403 Forbidden' );
	header( 'HTTP/1.1 403 Forbidden' );
	exit();
}

if ( function_exists( 'add_action' ) ) {
	//WordPress definitions
	if ( !defined( 'WP_CONTENT_URL' ) )
		define( 'WP_CONTENT_URL', get_option( 'siteurl' ) . '/wp-content' );
	if ( !defined( 'WP_CONTENT_DIR' ) )
		define( 'WP_CONTENT_DIR', ABSPATH . 'wp-content' );
	if ( !defined( 'WP_PLUGIN_URL' ) )
		define( 'WP_PLUGIN_URL', WP_CONTENT_URL . '/plugins' );
}

// disable mySQL Session Cache
define( 'QUERY_CACHE_TYPE_OFF', TRUE );

if ( !defined( 'SAVEQUERIES' ) )
	define( 'SAVEQUERIES', TRUE );

if ( !class_exists( 'Debug_Queries' ) ) {
	class Debug_Queries {
		
		// constructor
		function debug_queries() {
			
			if ( function_exists( 'register_activation_hook' ) )
				register_activation_hook(__FILE__, array( &$this, 'activate' ) );
			if ( function_exists( 'register_uninstall_hook' ) )
				register_uninstall_hook(__FILE__, array( 'Debug_Queries', 'deactivate' ) );
			if ( function_exists( 'register_deactivation_hook' ) )
				register_deactivation_hook(__FILE__, array( &$this, 'deactivate' ) );
				
			add_action( 'wp_head', array( $this, 'wp_head' ) );
			add_action( 'wp_footer', array( $this, 'the_queries' ) );
		}

		// core
		function get_queries() {
			global $wpdb;
			
			// disabled session cache of mySQL
			if ( QUERY_CACHE_TYPE_OFF )
				$wpdb->query( 'SET SESSION query_cache_type = 0;' );
			
			$debug_queries  = '';
			if ( $wpdb->queries ) {
				$x = 0;
				$total_time = timer_stop( FALSE, 22 );
				$total_query_time = 0;
				$class = ''; 
				$debug_queries .= '<ol>' . "\n";
				
				foreach ( $wpdb->queries as $q ) {
					if ( $x % 2 != 0 )
						$class = '';
					else
						$class = ' class="alt"';
					
					$q[0] = trim( ereg_replace( '[[:space:]]+', ' ', $q[0]) );
					$total_query_time += $q[1];
					$debug_queries .= '<li' . $class . '><ul>';
					$debug_queries .= '<li><strong>' . __( 'Time:' ) . '</strong> ' . $q[1] . '</li>';
					if ( isset($q[1]) )
						$debug_queries .= '<li><strong>' . __( 'Query:' ) . '</strong> ' . htmlentities( $q[0] ) . '</li>';
					if ( isset($q[2]) )
						$debug_queries .= '<li><strong>' . __( 'Call from:' ) . '</strong> ' . htmlentities( $q[2] ) . '</li>';
						
					$debug_queries .= '</ul></li>' . "\n";
					$x++;
				}
				
				$debug_queries .= '</ol>' . "\n\n";
			}
			
			$php_time = $total_time - $total_query_time;
			// Create the percentages
			$mysqlper = number_format_i18n( $total_query_time / $total_time * 100, 2 );
			$phpper   = number_format_i18n( $php_time / $total_time * 100, 2 );
			
			$debug_queries .= '<ul>' . "\n";
			$debug_queries .= '<li><strong>' . __( 'Total query time:' ) . ' ' . number_format_i18n( $total_query_time, 5 ) . __( 's for' ) . ' ' . count($wpdb->queries) . ' ' . __( 'queries.' ) . '</strong></li>';
			if ( count($wpdb->queries) != get_num_queries() ) {
				$debug_queries .= '<li><strong>' . __( 'Total num_query time:' ) . ' ' . timer_stop() . ' ' . __( 'for' ) . ' ' . get_num_queries() . ' ' . __( 'num_queries.' ) . '</strong></li>' . "\n";
				$debug_queries .= '<li class="none_list">' . __( '&raquo; Different values in num_query and query? - please set the constant' ) . ' <code>define(\'SAVEQUERIES\', true);</code>' . __( 'in your' ) . ' <code>wp-config.php</code></li>' . "\n";
			}
			if ( $total_query_time == 0 )
				$debug_queries .= '<li class="none_list">' . __( '&raquo; Query time is null (0)? - please set the constant' ) . ' <code>SAVEQUERIES</code>' . ' ' . __( 'at' ) . ' <code>TRUE</code> ' . __( 'in your' ) . ' <code>wp-config.php</code></li>' . "\n";
			$debug_queries .= '<li>' . __( 'Page generated in' ). ' ' . number_format_i18n( $total_time, 5 ) . __( 's, ' ) . $phpper . __( '% PHP' ) . ', ' . $mysqlper . __( '% MySQL' ) . '</li>' . "\n";
			$debug_queries .= '</ul>' . "\n";
			
			return $debug_queries;
		}

		// echo in html-comment
		function html_comment_queries() {
			
			if ( ! current_user_can( 'DebugQueries' ) )
				return;
			
			$echo 	= '';
			$echo .= "\n\n" . __( '<!-- Debug Queries by Frank Bueltge, bueltge.de' );
			$echo .= "\n\t" . __( '! Deactivate after analysis !' );
			$echo .= "\n" . $this->get_queries() . "\n" . ' -->' . "\n\n";
			
			echo $echo;
		}
		
		// echo in frontend
		function the_queries() {
			
			if ( ! current_user_can( 'DebugQueries' ) )
				return;
			
			$echo  = '';
			$echo .= '<div id="debugqueries" class="transparent">' . "\n";
			$echo .= '<h3><a href="http://bueltge.de/wordpress-performance-analysieren-plugin/558/">Debug Queries</a> ' . __( 'by Frank B&uuml;ltge' ) . ', <a href="http://bueltge.de/">bueltge.de</a></h3>' . "\n";
			$echo .= '<p>' . __( '&raquo; Deactivate after analysis!' ). '</p>' . "\n";
			$echo .= $this->get_queries();
			$echo .= '</div>' . "\n\n";
			
			echo $echo;
		}
		
		// add user rights
		function activate() {
			global $wp_roles;
			
			$wp_roles->add_cap( 'administrator', 'DebugQueries' );
		}
		
		// delete user rights
		function deactivate() {
			global $wp_roles;
			
			$wp_roles->remove_cap( 'administrator', 'DebugQueries' );
		}
		
		// function for WP < 2.8
		function plugins_url( $path = '', $plugin = '' ) {
			if ( function_exists( 'is_ssl' ) )
				$scheme = ( is_ssl() ? 'https' : 'http' );
			else
				$scheme = 'http';
			
			$url = WP_PLUGIN_URL;
			
			if ( 0 === strpos( $url, 'http' ) ) {
				if ( function_exists( 'is_ssl' ) && is_ssl() )
					$url = str_replace( 'http://', "{$scheme}://", $url );
			}
		
			if ( ! empty( $plugin ) && is_string( $plugin ) ) {
				$folder = dirname( plugin_basename( $plugin ) );
				if ( '.' != $folder)
					$url .= '/' . ltrim($folder, '/' );
			}
		
			if ( ! empty( $path ) && FALSE === is_string( $path ) && strpos( $path, '..' ) )
				$url .= '/' . ltrim( $path, '/' );
		
			return apply_filters( 'plugins_url', $url, $path, $plugin );
		}
		
		// infos in frontend, add css to head
		function wp_head() {
			global $wp_version;
			
			if ( ! current_user_can( 'DebugQueries' ) )
				return NULL;
				
			if ( version_compare( $wp_version, '2.8dev', '>' ) )
				$style = plugins_url( 'css/style-frontend.css', __FILE__ );
			else
				$style = $this->plugins_url( 'css/style-frontend.css', __FILE__ );
			
			$return = '<link rel="stylesheet" href="' . $style . '" type="text/css" media="screen" />';
			
			echo $return;
		}
		
	}
	
	$debug_queries = new Debug_Queries();
}

?>