[svn r10117] Statistics v 0.0.1

19 years ago · 5d2d364019
parent 0491788460
commit 5d2d364019
2 changed files with 604 additions and 0 deletions
--- a/main/statistics/index.php
+++ b/main/statistics/index.php
@ -0,0 +1,195 @@
+<?php
+
+// $Id: index.php 8216 2006-11-3 18:03:15 NushiFirefox $
+/*
+==============================================================================
+	Dokeos - elearning and course management software
+
+	Copyright (c) 2006 Bart Mollet <bart.mollet@hogent.be>
+
+	For a full list of contributors, see "credits.txt".
+	The full license can be read in "license.txt".
+
+	This program is free software; you can redistribute it and/or
+	modify it under the terms of the GNU General Public License
+	as published by the Free Software Foundation; either version 2
+	of the License, or (at your option) any later version.
+
+	See the GNU General Public License for more details.
+
+	Contact: Dokeos, 181 rue Royale, B-1000 Brussels, Belgium, info@dokeos.com
+==============================================================================
+*/
+/**
+==============================================================================
+* This tool allows the use statistics
+* @package dokeos.statistics
+==============================================================================
+*/
+
+ 
+ Header("Cache-Control: must-revalidate");
+
+ $offset = 60 * 3;
+ $ExpStr = "Expires: " . gmdate("D, d M Y H:i:s", time() + $offset) . " GMT";
+ Header($ExpStr);
+ 
+ $langFile='admin';
+ $cidReset = true;
+
+include('../inc/global.inc.php');
+require_once ('statistics.lib.php');
+
+if($is_subPlatformAdmin)
+{
+	$interbredcrump[]=array("url" => "../subadmin/index.php","name" => get_lang('Beheer'));
+}
+else
+{
+	$interbredcrump[] = array ("url" => "../../../main/admin/index.php", "name" => get_lang('AdministrationTools'));
+}
+
+
+$tool_name = get_lang('Statistics_no_existing_courses');
+Display::display_header($tool_name);
+api_display_tool_title($tool_name);
+
+?>
+<style type="text/css">
+<!--
+.statTable {
+	border: 1px solid #999999;
+	margin-bottom: 20px;
+}
+.statHeader{
+	background-color: #eeeeee;
+	border-bottom-width: 1px;
+	border-bottom-style: dashed;
+	border-bottom-color: #666666;
+	font-weight: bold;
+}
+.statFooter{
+	background-color: #eeeeee;
+	border-top-width: 1px;
+	border-top-style: dashed;
+	border-top-color: #666666;
+	font-weight: bold;
+}
+acronym{
+	 cursor: help;
+}
+-->
+</style>
+<?php
+
+$strCourse  = get_lang('Courses');
+$strUsers = get_lang('Users');
+
+
+$tools[$strCourse]['action=courses&amp;count_invisible_courses=1'] = get_lang('Statistics_total_amount_of_users');
+$tools[$strCourse]['action=curriculum_courses'] = get_lang('Statistics_curriculumcourses_a_year');
+
+if($is_platformAdmin)
+{
+	$tools[$strCourse]['action=tools'] = get_lang('Statistics_Acces_to_coursemodules');
+	$tools[$strCourse]['action=courselastvisit'] = get_lang('Statistics_final_visit');
+}
+
+
+$tools[$strUsers]['action=users'] = get_lang('Statistics_user_count');
+$tools[$strUsers]['action=logins&amp;type=month'] = get_lang('Statistics_logins_each_month');
+if($is_platformAdmin)
+{
+	$tools[$strUsers]['action=logins&amp;type=day'] = get_lang('Statistics_logins_each_day');	
+	$tools[$strUsers]['action=logins&amp;type=hour'] = get_lang('Statistics_logins_each_hour');
+	$tools[$strUsers]['action=recentlogins'] = get_lang('Statistics_total_active_users');
+	$tools[$strUsers]['action=pictures'] = get_lang('Statistics_total_users_with_pic');
+}
+
+
+echo '<table><tr>';
+foreach($tools as $section => $items)
+{
+	echo '<td valign="top">';
+	echo '<b>'.$section.'</b>';
+	echo '<ul>';
+	foreach($items as $key => $value)
+	{
+			echo '<li><a href="index.php?'.$key.'">'.$value.'</a></li>';
+	}
+	echo '</ul>';
+	echo '</td>';
+}
+echo '</tr></table>';
+$faculties = statistics::get_faculties();
+echo '<br/><br/>';
+switch($_GET['action'])
+{
+	case $strCourse:
+		// total amount of courses
+		statistics::print_stats(
+				get_lang('Statistics_NumberOfCourses'),
+				array(
+					get_lang('Statistics_CurriculumCourses') => statistics::count_courses(true,null,$_GET['count_invisible_courses']),
+					get_lang('Statistics_CommonCourses') => statistics::count_courses(false,null,$_GET['count_invisible_courses'])
+				)
+			);
+		foreach($faculties as $code => $name)
+		{
+			$name = str_replace(get_lang('Statistics_Department'),"",$name);
+			$cur_courses[$name] = statistics::count_courses(true,$code,$_GET['count_invisible_courses']);
+			$alg_courses[$name] = statistics::count_courses(false,$code,$_GET['count_invisible_courses']);
+		}
+		// curriculum-course for each department
+		statistics::print_stats(get_lang('Statistics_CurriculumCourses'),$cur_courses);
+		// general course for each department
+		statistics::print_stats(get_lang('Statistics_CommonCourses'),$alg_courses);
+
+		break;
+	case $strUsers:
+		// total amount of users
+		statistics::print_stats(
+				get_lang('NumberOfUsers'),
+				array(
+					get_lang('Teachers') => statistics::count_users(1,null,$_GET['count_invisible_courses']),
+					get_lang('Students') => statistics::count_users(5,null,$_GET['count_invisible_courses'])
+				)
+			);
+		foreach($faculties as $code => $name)
+		{
+			$name = str_replace(get_lang('Department'),"",$name);
+			$teachers[$name] = statistics::count_users(1,$code,$_GET['count_invisible_courses']);
+			$students[$name] = statistics::count_users(5,$code,$_GET['count_invisible_courses']);
+		}
+		// docents for each departerment
+		statistics::print_stats(get_lang('Teachers'),$teachers);
+		// students for each departement
+		statistics::print_stats(get_lang('Students'),$students);
+
+		break;
+	case 'logins':
+		statistics::print_login_stats($_GET['type']);
+		break;
+	case 'tools':
+		statistics::print_tool_stats();
+		break;
+	case 'accessoldcourses':
+		statistics::print_access_to_old_courses_stats();
+		break;
+	case 'courselastvisit':
+		statistics::print_course_last_visit();
+		break;
+	case 'recentlogins':
+		statistics::print_recent_login_stats();
+		break;
+	case 'pictures':
+		statistics::print_user_pictures_stats();
+		break;
+	case 'curriculum_courses':
+		statistics::print_curriculum_courses_stats_by_year();
+		statistics::print_curriculum_courses_stats_by_category();
+		break;
+}
+
+Display::display_footer();
+?>
--- a/main/statistics/statistics.lib.php
+++ b/main/statistics/statistics.lib.php
@ -0,0 +1,409 @@
+<?php
+
+// $Id: index.php 8216 2006-11-3 18:03:15 NushiFirefox $
+/*
+==============================================================================
+	Dokeos - elearning and course management software
+
+	Copyright (c) 2006 Bart Mollet <bart.mollet@hogent.be>
+
+	For a full list of contributors, see "credits.txt".
+	The full license can be read in "license.txt".
+
+	This program is free software; you can redistribute it and/or
+	modify it under the terms of the GNU General Public License
+	as published by the Free Software Foundation; either version 2
+	of the License, or (at your option) any later version.
+
+	See the GNU General Public License for more details.
+
+	Contact: Dokeos, 181 rue Royale, B-1000 Brussels, Belgium, info@dokeos.com
+==============================================================================
+*/
+/**
+==============================================================================
+* This class provides some functions for statistics
+* @package dokeos.statistics
+==============================================================================
+*/
+
+
+class Statistics
+{
+	/**
+	 * Converts a number of bytes in a formatted string
+	 * @param int $size
+	 * @return string Formatted file size
+	 */
+	function make_size_string($size) {
+		if ($size < pow(2,10)) return $size." bytes";
+		if ($size >= pow(2,10) && $size < pow(2,20)) return round($size / pow(2,10), 0)." KB";
+		if ($size >= pow(2,20) && $size < pow(2,30)) return round($size / pow(2,20), 1)." MB";
+		if ($size > pow(2,30)) return round($size / pow(2,30), 2)." GB";
+	}
+	/**
+	 * Count courses
+	 * @param bool $curriculum True if only curriculum-courses should be counted
+	 * @param $string faculty  Code of a faculty. Default: count all courses.
+	 * @return int Number of courses counted
+	 */
+	function count_courses($curriculum, $faculty = NULL, $count_invisible_courses = true)
+	{
+		$course_table = Database :: get_main_table(MAIN_COURSE_TABLE);
+		$sql = "SELECT COUNT(*) AS number FROM ".$course_table." ";
+		if ($curriculum)
+		{
+			$sql .= "WHERE visual_code NOT LIKE 'ALG%'";
+		}
+		else
+		{
+			$sql .= "WHERE visual_code LIKE 'ALG%'";
+		}
+		if (isset ($faculty))
+		{
+			$sql .= " AND category_code = '$faculty'";
+		}
+
+		$res = api_sql_query($sql, __FILE__, __LINE__);
+		$obj = mysql_fetch_object($res);
+		return $obj->number;
+	}
+	/**
+	 * Count users
+	 * @param int $status COURSEMANAGER or STUDENT
+	 * @param $string faculty  Code of a faculty. Default: count all students.
+	 * @return int Number of students counted
+	 */
+	function count_users($status, $faculty = NULL, $count_invisible_courses = true)
+	{
+		$course_user_table = Database :: get_main_table(MAIN_COURSE_USER_TABLE);
+		$course_table = Database :: get_main_table(MAIN_COURSE_TABLE);
+		$sql = "SELECT COUNT(DISTINCT(cu.user_id)) AS number FROM $course_user_table cu, $course_table c WHERE cu.status = $status AND cu.course_code = c.code";
+		if (isset ($faculty))
+		{
+			$sql = "SELECT COUNT(DISTINCT(cu.user_id)) AS number FROM $course_user_table cu, $course_table c WHERE cu.status = $status AND c.code = cu.course_code AND c.category_code = '$faculty'";
+		}
+		$res = api_sql_query($sql, __FILE__, __LINE__);
+		$obj = mysql_fetch_object($res);
+		return $obj->number;
+	}
+	/**
+	 * Get all faculties
+	 * @return array All faculties (code => name)
+	 */
+	function get_faculties()
+	{
+		$category_table = Database :: get_main_table(MAIN_CATEGORY_TABLE);
+		$sql = "SELECT * FROM $category_table ORDER BY tree_pos";
+		$res = api_sql_query($sql, __FILE__, __LINE__);
+		$faculties = array ();
+		while ($fac = mysql_fetch_object($res))
+		{
+			$faculties[$fac->code] = $fac->name;
+		}
+		return $faculties;
+	}
+	/**
+	 * Rescale data
+	 * @param array $data The data that should be rescaled
+	 * @param int $max The maximum value in the rescaled data (default = 500);
+	 * @return array The rescaled data, same key as $data
+	 */
+	function rescale($data, $max = 500)
+	{
+		$data_max = 1;
+		foreach ($data as $index => $value)
+		{
+			$data_max = ($data_max < $value ? $value : $data_max);
+		}
+		reset($data);
+		$result = array ();
+		$delta = $max / $data_max;
+		foreach ($data as $index => $value)
+		{
+			$result[$index] = (int) round($value * $delta);
+		}
+		return $result;
+	}
+	/**
+	 * Show statistics
+	 * @param string $title The title
+	 * @param array $stats
+	 * @param bool $show_total
+	 * @param bool $is_file_size
+	 */
+	function print_stats($title, $stats, $show_total = true, $is_file_size = false)
+	{
+		$total = 0;
+		$data = Statistics::rescale($stats);
+		echo '<table class="statTable data_table" cellspacing="0" cellpadding="3">
+			  		  <tr><th colspan="4" class="statHeader">'.$title.'</th></tr>';
+		$i = 0;
+		foreach($stats as $subtitle => $number)
+		{
+			$total += $number;
+		}
+		foreach ($stats as $subtitle => $number)
+		{
+			$i = $i % 13;
+			$short_subtitle = str_replace(get_lang('Statistics_Departement'),'',$subtitle);
+			$short_subtitle = str_replace(get_lang('Statistics_Central_Administration'),'',$short_subtitle);
+			$short_subtitle = trim($short_subtitle);
+			if (strlen($subtitle) > 20)
+			{
+				$short_subtitle = '<acronym title="'.$subtitle.'">'.substr($short_subtitle, 0, 17).'...</acronym>';
+			}
+			if(!$is_file_size)
+			{
+				$number_label = number_format($number, 0, ',', '.');
+			}
+			else
+			{
+				$number_label = Statistics::make_size_string($number);
+			}
+			echo '<tr class="row_'.($i%2 == 0 ? 'odd' : 'even').'">
+								<td width="150">'.$short_subtitle.'</td>
+								<td width="550">
+						 			<img src="../img/bar_1u.gif" width="'.$data[$subtitle].'" height="10"/>
+								</td>
+								<td align="right">'.$number_label.'</td>
+								<td align="right"> '.number_format(100*$number/$total, 1, ',', '.').'%</td>
+				 			</tr>';
+			$i ++;
+		}
+		if ($show_total)
+		{
+			if(!$is_file_size)
+			{
+				$total_label = number_format($total, 0, ',', '.');
+			}
+			else
+			{
+				$total_label = Statistics::make_size_string($total);
+			}
+			echo '<tr><th  colspan="4" align="right">'.get_lang('Total').': '.$total_label.'</td></tr>';
+		}
+		echo '</table>';
+	}
+	/**
+	 * Show statistics about the number of curriculum courses per year
+	 */
+	function print_curriculum_courses_stats_by_year()
+	{
+		$faculties = Statistics::get_faculties();
+		for($year = CURRENT_ACADEMIC_YEAR; $year >= FIRST_ACADEMIC_YEAR; $year--)
+		{
+			$cdb = 'cdb'.($year != CURRENT_ACADEMIC_YEAR ? $year : '');
+			$sql = 'SELECT c.category_code AS cat_code,COUNT(c.code) AS number_of_courses FROM dokeos_main.course c, '.$cdb.'.vak v WHERE c.visual_code = v.vak GROUP BY c.category_code';
+			$res = api_sql_query($sql,__FILE__,__LINE__);
+			$result = array();
+			while($obj = mysql_fetch_object($res))
+			{
+				$result[$faculties[$obj->cat_code]] = $obj->number_of_courses;
+			}	
+			Statistics::print_stats(get_lang('Statistics_NumberOfCourses').$year.'-'.($year+1),$result,true);
+		}
+	}
+	/**
+	 * Show statistics about the number of curriculum courses per year per department
+	 */
+	function print_curriculum_courses_stats_by_category()
+	{
+		$result = array();
+		$faculties = Statistics::get_faculties();
+		for($year = CURRENT_ACADEMIC_YEAR; $year >= FIRST_ACADEMIC_YEAR; $year--)
+		{
+			$cdb = 'cdb'.($year != CURRENT_ACADEMIC_YEAR ? $year : '');
+			$sql = 'SELECT c.category_code AS cat_code,COUNT(c.code) AS number_of_courses FROM dokeos_main.course c, '.$cdb.'.vak v WHERE c.visual_code = v.vak GROUP BY c.category_code';
+			$res = api_sql_query($sql,__FILE__,__LINE__);
+			while($obj = mysql_fetch_object($res))
+			{
+				$result[$faculties[$obj->cat_code]][$year.'-'.($year+1)] = $obj->number_of_courses;
+			}	
+		}
+		foreach($result as $faculty => $stats)
+		{
+			Statistics::print_stats(get_lang('Statistics_CurriculumCourses').$faculty,$stats,true);
+		}
+	}
+	/**
+	 * Show some stats about the number of logins
+	 * @param string $type month, hour or day
+	 */
+	function print_login_stats($type)
+	{
+		switch($type)
+		{
+			case 'month':
+				$sql = "SELECT DATE_FORMAT( login_date, '%Y %b' ) AS stat_date , count( login_id ) AS number_of_logins FROM dokeos_stats.track_e_login GROUP BY stat_date ORDER BY login_date ";
+				break;
+			case 'hour':
+				$sql = "SELECT DATE_FORMAT( login_date, '%H' ) AS stat_date , count( login_id ) AS number_of_logins FROM dokeos_stats.track_e_login GROUP BY stat_date ORDER BY stat_date ";
+				break;
+			case 'day':
+				$sql = "SELECT DATE_FORMAT( login_date, '%a' ) AS stat_date , count( login_id ) AS number_of_logins FROM dokeos_stats.track_e_login GROUP BY stat_date ORDER BY DATE_FORMAT( login_date, '%w' ) ";
+				break;
+		}
+		$res = api_sql_query($sql,__FILE__,__LINE__);
+		$result = array();
+		while($obj = mysql_fetch_object($res))
+		{
+			$result[$obj->stat_date] = $obj->number_of_logins;
+		}
+		Statistics::print_stats(get_lang('Statistics_count_logins'),$result,true);
+	}
+	/**
+	 * Print the number of resent logins (last minute, hour, day, month)
+	 */
+	function print_recent_login_stats()
+	{
+		$total_logins = 0;
+		
+		$sql['... ' & get_lang('Statistics_the_past_minute')] = "SELECT count(DISTINCT access_user_id) AS number FROM dokeos_stats.track_e_lastaccess WHERE DATE_ADD(access_date, INTERVAL 1 MINUTE) >= NOW()";
+		$sql['... ' & get_lang('Statistics_the_past_hour')] = "SELECT count(DISTINCT access_user_id) AS number  FROM dokeos_stats.track_e_lastaccess WHERE DATE_ADD(access_date, INTERVAL 1 HOUR) >= NOW()";
+		$sql['... ' & get_lang('Statistics_the_past_day')] = "SELECT count(DISTINCT access_user_id) AS number  FROM dokeos_stats.track_e_lastaccess WHERE DATE_ADD(access_date, INTERVAL 1 DAY) >= NOW()";
+		$sql['... ' & get_lang('Statistics_the_past_month')] = "SELECT count(DISTINCT access_user_id) AS number  FROM dokeos_stats.track_e_lastaccess WHERE DATE_ADD(access_date, INTERVAL 1 MONTH) >= NOW()";
+		
+		
+		foreach($sql as $index => $query)
+		{
+			#
+			#$index.': ';
+			$res = api_sql_query($query,__FILE__,__LINE__);
+			$obj = mysql_fetch_object($res);
+			
+			/*
+			 * echo number_format($obj->number, 0, ',', '.');
+			 * echo '<br/>';
+			*/
+				$total_logins += number_format($obj->number, 0, ',', '.');
+		}
+
+	
+		Statistics::print_stats(get_lang('Statistics_Number_of_active_users_on_dokeos'),$total_logins,true);
+	}
+	/**
+	 * Show some stats about the accesses to the different course tools
+	 */
+	function print_tool_stats()
+	{
+		$tools = array('announcement','assignment','calendar_event','chat','conference','course_description','document','dropbox','group','learnpath','link','quiz','student_publication','user','bb_forum');
+		$sql = "SELECT access_tool, count( access_id ) AS number_of_logins FROM dokeos_stats.track_e_access WHERE access_tool IN ('".implode("','",$tools)."') GROUP BY access_tool ";
+		$res = api_sql_query($sql,__FILE__,__LINE__);
+		$result = array();
+		while($obj = mysql_fetch_object($res))
+		{
+			$result[$obj->access_tool] = $obj->number_of_logins;
+		}
+		Statistics::print_stats(get_lang('Statistics_Acces_to_coursemodules_hits'),$result,true);
+		$sql = "SELECT access_tool, count( access_id ) AS number_of_logins FROM dokeos_stats.track_e_lastaccess WHERE access_tool IN ('".implode("','",$tools)."') GROUP BY access_tool ";
+		$res = api_sql_query($sql,__FILE__,__LINE__);
+		$result = array();
+		while($obj = mysql_fetch_object($res))
+		{
+			$result[$obj->access_tool] = $obj->number_of_logins;
+		}
+		Statistics::print_stats(get_lang('Statistics_Acces_to_coursemodules_use'),$result,true);
+	}
+	/**
+	 * Show some stats about the access to old course tools
+	 */
+	function print_access_to_old_courses_stats()
+	{
+		$sql = "SELECT 	count( access_id ) AS number,
+						IF( LOCATE( 'ALG', access_cours_code ) ,
+							'Algemene cursus',
+							IF( LENGTH( access_cours_code ) =14, 'Curr. 2004-2005', 'Curr. 2005-2006' )
+						) AS type
+				FROM dokeos_stats.track_e_access
+				GROUP BY TYPE";
+		$res = api_sql_query($sql,__FILE__,__LINE__);
+		$result = array();
+		while($obj = mysql_fetch_object($res))
+		{
+			$result[$obj->type] = $obj->number;
+		}
+		Statistics::print_stats(get_lang('Statistics_Acces_to_old_curriculum_courses'),$result,true);
+	}
+
+	
+		
+	/**
+	 * Shows the number of users having their picture uploaded in Dokeos.
+	 */
+	function print_user_pictures_stats()
+	{
+		$sql = "SELECT COUNT(*) AS n FROM dokeos_main.user";
+		$res = api_sql_query($sql,__FILE__,__LINE__);
+		$count1 = mysql_fetch_object($res);
+		$sql = "SELECT COUNT(*) AS n FROM dokeos_main.user WHERE picture_uri != ''";
+		$res = api_sql_query($sql,__FILE__,__LINE__);
+		$count2 = mysql_fetch_object($res);
+		Statistics::print_stats(get_lang('user_who_have_picture_in_dokeos'),'('.number_format(($count2->n/$count1->n*100), 0, ',', '.').'%)',true);
+		
+	#	echo $count2->n.' ' & get_lang('Statistics_user_who_have_picture_in_dokeos') & '('.number_format(($count2->n/$count1->n*100), 0, ',', '.').'%)';
+	}
+
+	/**
+	 * Shows statistics about the time of last visit to each course.
+	 */
+	function print_course_last_visit()
+	{
+		$columns[0] = 'access_cours_code';
+		$columns[1] = 'access_date';
+
+		$sql_order[SORT_ASC] = 'ASC';
+		$sql_order[SORT_DESC] = 'DESC';
+
+		$per_page = isset($_GET['per_page']) ? $_GET['per_page'] : 10;
+		$page_nr = isset($_GET['page_nr']) ? $_GET['page_nr'] : 1;
+		$column = isset($_GET['column']) ? $_GET['column'] : 0;
+		$date_diff = isset($_GET['date_diff']) ? $_GET['date_diff'] : 60;
+		$direction = isset($_GET['direction']) ? $_GET['direction'] : SORT_ASC;
+		?>
+		<form method="get" action="index.php">
+		<input type="hidden" name="action" value="courselastvisit"/>
+		<input type="text" name="date_diff" value="<?php echo $date_diff; ?>"/>
+		<input type="submit" value="<?php echo get_lang('Search'); ?>"/>
+		</form>
+		<?php
+		$sql = "SELECT * FROM dokeos_stats.track_e_lastaccess GROUP BY access_cours_code HAVING access_cours_code <> '' AND DATEDIFF( NOW() , access_date ) > ". $date_diff;
+		$res = api_sql_query($sql,__FILE__,__LINE__);
+		$number_of_courses = mysql_num_rows($res);
+		$sql .= ' ORDER BY '.$columns[$column].' '.$sql_order[$direction];
+		$from = ($page_nr -1) * $per_page;
+		$sql .= ' LIMIT '.$from.','.$per_page;
+		echo Get_lang('Statistics_Last_login_more_than').$date_diff.get_lang('Statistics_Days_ago');
+		$res = api_sql_query($sql, __FILE__, __LINE__);
+		if (mysql_num_rows($res) > 0)
+		{
+			$courses = array ();
+			while ($obj = mysql_fetch_object($res))
+			{
+				$course = array ();
+				$course[]= '<a href="http://dokeos.hogent.be/courses/'.$obj->access_cours_code.'">'.$obj->access_cours_code.' <a>';
+				$course[] = $obj->access_date;
+				$courses[] = $course;
+			}
+			
+			$table_header[] = array ('Coursecode', true);
+			$table_header[] = array ('Last login', true);
+				HoGent::display_page_navigation($number_of_courses,$per_page, $page_nr,array_merge($parameters,$_GET));
+			Display :: display_sortable_table($table_header, $courses, array ('column'=>$column,'direction'=>$direction), array (), $parameters);
+			HoGent::display_page_navigation($number_of_courses,$per_page, $page_nr,array_merge($parameters,$_GET));
+			foreach(array_merge($parameters,$_GET) as $id => $value)
+			{
+				if ($id!='selectall'){
+					$link .= $id.'='.$value.'&amp;';
+				}
+			}
+
+		}
+		else
+		{
+			echo get_lang('NoSearchResults');
+		}
+	}
+	
+}
+?>