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statistics_helper.php
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statistics_helper.php
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<?php
/*
* LimeSurvey
* Copyright (C) 2007-2011 The LimeSurvey Project Team / Carsten Schmitz
* All rights reserved.
* License: GNU/GPL License v2 or later, see LICENSE.php
* LimeSurvey is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/
/**
*
* Generate a chart for a question
* @param int $iQuestionID ID of the question
* @param int $iSurveyID ID of the survey
* @param mixed $type Type of the chart to be created - null produces bar chart, any other value produces pie chart
* @param array $lbl An array containing the labels for the chart items
* @param mixed $gdata An array containing the percentages for the chart items
* @param mixed $grawdata An array containing the raw count for the chart items
* @param mixed $cache An object containing [Hashkey] and [CacheFolder]
* @return Name
*/
function createChart($iQuestionID, $iSurveyID, $type=null, $lbl, $gdata, $grawdata, $cache, $oLanguage)
{
/* This is a lazy solution to bug #6389. A better solution would be to find out how
the "T" gets passed to this function from the statistics.js file in the first place! */
if(substr($iSurveyID,0,1)=="T") {$iSurveyID=substr($iSurveyID,1);}
$rootdir = Yii::app()->getConfig("rootdir");
$homedir = Yii::app()->getConfig("homedir");
$homeurl = Yii::app()->getConfig("homeurl");
$admintheme = Yii::app()->getConfig("admintheme");
$scriptname = Yii::app()->getConfig("scriptname");
$chartfontfile = Yii::app()->getConfig("chartfontfile");
$chartfontsize = Yii::app()->getConfig("chartfontsize");
$alternatechartfontfile = Yii::app()->getConfig("alternatechartfontfile");
$language = $oLanguage->langcode;
$clang = $oLanguage;
$cachefilename = "";
/* Set the fonts for the chart */
if ($chartfontfile=='auto')
{
// Tested with ar,be,el,fa,hu,he,is,lt,mt,sr, and en (english)
// Not working for hi, si, zh, th, ko, ja : see $config['alternatechartfontfile'] to add some specific language font
$chartfontfile='DejaVuSans.ttf';
if(array_key_exists($language,$alternatechartfontfile))
{
$neededfontfile = $alternatechartfontfile[$language];
if(is_file($rootdir."/fonts/".$neededfontfile))
{
$chartfontfile=$neededfontfile;
}
else
{
Yii::app()->session['flashmessage'] = sprintf($clang->gT('The fonts file %s was not found in <limesurvey root folder>/fonts directory. Please, see the txt file for your language in fonts directory.'),$neededfontfile);
}
}
}
if (array_sum($gdata ) > 0) //Make sure that the percentages add up to more than 0
{
$graph = "";
$p1 = "";
$i = 0;
foreach ($gdata as $data)
{
if ($data != 0)
{
$i++;
}
}
/* Totatllines is the number of entries to show in the key and we need to reduce the font
and increase the size of the chart if there are lots of them (ie more than 15) */
$totallines=$i;
if ($totallines>15)
{
$gheight=320+(6.7*($totallines-15));
$fontsize=7;
$legendtop=0.01;
$setcentrey=0.5/(($gheight/320));
}
else
{
$gheight=320;
$fontsize=8;
$legendtop=0.07;
$setcentrey=0.5;
}
if (!$type) // Bar chart
{
$DataSet = new pData;
$counter=0;
$maxyvalue=0;
foreach ($grawdata as $datapoint)
{
$DataSet->AddPoint(array($datapoint),"Serie$counter");
$DataSet->AddSerie("Serie$counter");
$counter++;
if ($datapoint>$maxyvalue) $maxyvalue=$datapoint;
}
if ($maxyvalue<10) {++$maxyvalue;}
if ($language=='ar')
{
if(!class_exists('I18N_Arabic_Glyphs',false)) $Arabic = new I18N_Arabic('Glyphs');
else $Arabic=new I18N_Arabic_Glyphs();
foreach($lbl as $kkey => $kval){
if (preg_match("^[A-Za-z]^", $kkey)) { //auto detect if english
$lblout[]=$kkey.' ('.$kval.')';
}
else{
$lblout[]= $Arabic->utf8Glyphs( $kkey.' )'.$kval.'(');
}
}
}
elseif (getLanguageRTL($language))
{
foreach($lbl as $kkey => $kval){
$lblout[]= UTF8Strrev($kkey.' )'.$kval.'(');
}
}
else
{
foreach($lbl as $kkey => $kval){
$lblout[]= $kkey.' ('.$kval.')';
}
}
$counter=0;
foreach ($lblout as $sLabelName)
{
$DataSet->SetSerieName($sLabelName, "Serie$counter");
$counter++;
}
if ($cache->IsInCache("graph".$language.$iSurveyID,$DataSet->GetData()))
{
$cachefilename=basename($cache->GetFileFromCache("graph".$language.$iSurveyID,$DataSet->GetData()));
}
else
{
$graph = new pChart(1,1);
$graph->setFontProperties($rootdir.DIRECTORY_SEPARATOR.'fonts'.DIRECTORY_SEPARATOR.$chartfontfile, $chartfontsize);
$legendsize=$graph->getLegendBoxSize($DataSet->GetDataDescription());
if ($legendsize[1]<320) $gheight=420; else $gheight=$legendsize[1]+100;
$graph = new pChart(690+$legendsize[0],$gheight);
$graph->loadColorPalette($homedir.DIRECTORY_SEPARATOR.'styles'.DIRECTORY_SEPARATOR.$admintheme.DIRECTORY_SEPARATOR.'limesurvey.pal');
$graph->setFontProperties($rootdir.DIRECTORY_SEPARATOR.'fonts'.DIRECTORY_SEPARATOR.$chartfontfile,$chartfontsize);
$graph->setGraphArea(50,30,500,$gheight-60);
$graph->drawFilledRoundedRectangle(7,7,523+$legendsize[0],$gheight-7,5,254,255,254);
$graph->drawRoundedRectangle(5,5,525+$legendsize[0],$gheight-5,5,230,230,230);
$graph->drawGraphArea(255,255,255,TRUE);
$graph->drawScale($DataSet->GetData(),$DataSet->GetDataDescription(),SCALE_START0,150,150,150,TRUE,90,0,TRUE,5,false);
$graph->drawGrid(4,TRUE,230,230,230,50);
// Draw the 0 line
$graph->setFontProperties($rootdir.DIRECTORY_SEPARATOR.'fonts'.DIRECTORY_SEPARATOR.$chartfontfile,$chartfontsize);
$graph->drawTreshold(0,143,55,72,TRUE,TRUE);
// Draw the bar graph
$graph->drawBarGraph($DataSet->GetData(),$DataSet->GetDataDescription(),FALSE);
//$Test->setLabel($DataSet->GetData(),$DataSet->GetDataDescription(),"Serie4","1","Important point!");
// Finish the graph
$graph->setFontProperties($rootdir.DIRECTORY_SEPARATOR.'fonts'.DIRECTORY_SEPARATOR.$chartfontfile, $chartfontsize);
$graph->drawLegend(510,30,$DataSet->GetDataDescription(),255,255,255);
$cache->WriteToCache("graph".$language.$iSurveyID,$DataSet->GetData(),$graph);
$cachefilename=basename($cache->GetFileFromCache("graph".$language.$iSurveyID,$DataSet->GetData()));
unset($graph);
}
} //end if (bar chart)
//Pie Chart
else
{
// this block is to remove the items with value == 0
// and an inelegant way to remove comments from List with Comments questions
$i = 0;
$aHelperArray=array_keys($lbl);
while (isset ($gdata[$i]))
{
if ($gdata[$i] == 0 || ($type == "O" && substr($aHelperArray[$i],0,strlen($oLanguage->gT("Comments")))==$oLanguage->gT("Comments")))
{
array_splice ($gdata, $i, 1);
array_splice ($lbl, $i, 1);
}
else
{$i++;}
}
if ($language=='ar')
{
if(!class_exists('I18N_Arabic_Glyphs',false)) $Arabic = new I18N_Arabic('Glyphs');
else $Arabic=new I18N_Arabic_Glyphs();
foreach($lbl as $kkey => $kval){
if (preg_match("^[A-Za-z]^", $kkey)) { //auto detect if english
$lblout[]=$kkey.' ('.$kval.')';
}
else{
$lblout[]= $Arabic->utf8Glyphs( $kkey.' )'.$kval.'(');
}
}
}
elseif (getLanguageRTL($language))
{
foreach($lbl as $kkey => $kval){
$lblout[]= UTF8Strrev($kkey.' )'.$kval.'(');
}
}
else
{
foreach($lbl as $kkey => $kval){
$lblout[]= $kkey.' ('.$kval.')';
}
}
//create new 3D pie chart
$DataSet = new pData;
$DataSet->AddPoint($gdata,"Serie1");
$DataSet->AddPoint($lblout,"Serie2");
$DataSet->AddAllSeries();
$DataSet->SetAbsciseLabelSerie("Serie2");
if ($cache->IsInCache("graph".$language.$iSurveyID, $DataSet->GetData()))
{
$cachefilename=basename($cache->GetFileFromCache("graph".$language.$iSurveyID,$DataSet->GetData()));
}
else
{
$gheight=ceil($gheight);
$graph = new pChart(690,$gheight);
$graph->loadColorPalette($homedir.'/styles/'.$admintheme.'/limesurvey.pal');
$graph->drawFilledRoundedRectangle(7,7,687,$gheight-3,5,254,255,254);
$graph->drawRoundedRectangle(5,5,689,$gheight-1,5,230,230,230);
// Draw the pie chart
$graph->setFontProperties($rootdir."/fonts/".$chartfontfile, $chartfontsize);
$graph->drawPieGraph($DataSet->GetData(),$DataSet->GetDataDescription(),225,round($gheight/2),170,PIE_PERCENTAGE,TRUE,50,20,5);
$graph->setFontProperties($rootdir."/fonts/".$chartfontfile,$chartfontsize);
$graph->drawPieLegend(430,12,$DataSet->GetData(),$DataSet->GetDataDescription(),250,250,250);
$cache->WriteToCache("graph".$language.$iSurveyID,$DataSet->GetData(),$graph);
$cachefilename=basename($cache->GetFileFromCache("graph".$language.$iSurveyID,$DataSet->GetData()));
unset($graph);
}
} //end else -> pie charts
}
return $cachefilename;
}
/**
* Return data to populate a Google Map
* @param string$sField Field name
* @param $qsid Survey id
* @return array
*/
function getQuestionMapData($sField, $qsid)
{
$aresult = Survey_dynamic::model($qsid)->findAll();
$d = array ();
//loop through question data
foreach ($aresult as $arow)
{
$alocation = explode(";", $arow->$sField);
if (count($alocation) >= 2) {
$d[] = "{$alocation[0]} {$alocation[1]}";
}
}
return $d;
}
/** Builds the list of addon SQL select statements
* that builds the query result set
*
* @param $allfields An array containing the names of the fields/answers we want to display in the statistics summary
* @param $fieldmap The fieldmap for the survey
* @param $language The language to use
*
* @return array $selects array of individual select statements that can be added/appended to
* the 'where' portion of a SQL statement to restrict the result set
* ie: array("`FIELDNAME`='Y'", "`FIELDNAME2`='Hello'");
*
*/
function buildSelects($allfields, $surveyid, $language) {
//Create required variables
$selects=array();
$aQuestionMap=array();
$fieldmap=createFieldMap($surveyid, "full", false, false, $language);
foreach ($fieldmap as $field)
{
if(isset($field['qid']) && $field['qid']!='')
$aQuestionMap[]=$field['sid'].'X'.$field['gid'].'X'.$field['qid'];
}
// creates array of post variable names
for (reset($_POST); $key=key($_POST); next($_POST)) { $postvars[]=$key;}
/*
* Iterate through postvars to create "nice" data for SQL later.
*
* Remember there might be some filters applied which have to be put into an SQL statement
*
* This foreach iterates through the name ($key) of each post value and builds a SELECT
* statement out of it. It returns an array called $selects[] which will have a select query
* for each filter chosen. ie: $select[0]="`74X71X428EXP` ='Y'";
*
* This array is used later to build the overall query used to limit the number of responses
*
*/
if(isset($postvars))
foreach ($postvars as $pv)
{
//Only do this if there is actually a value for the $pv
if (
in_array($pv, $allfields) || in_array(substr($pv,1),$aQuestionMap) || in_array($pv,$aQuestionMap)
|| (
(
$pv[0]=='D' || $pv[0]=='N' || $pv[0]=='K'
)
&& in_array(substr($pv,1,strlen($pv)-2),$aQuestionMap)
)
)
{
$firstletter=substr($pv,0,1);
/*
* these question types WON'T be handled here:
* M = Multiple choice
* T - Long Free Text
* Q - Multiple Short Text
* D - Date
* N - Numerical Input
* | - File Upload
* K - Multiple Numerical Input
*/
if ($pv != "sid" && $pv != "display" && $firstletter != "M" && $firstletter != "P" && $firstletter != "T" &&
$firstletter != "Q" && $firstletter != "D" && $firstletter != "N" && $firstletter != "K" && $firstletter != "|" &&
$pv != "summary" && substr($pv, 0, 2) != "id" && substr($pv, 0, 9) != "datestamp") //pull out just the fieldnames
{
//put together some SQL here
$thisquestion = Yii::app()->db->quoteColumnName($pv)." IN (";
foreach ($_POST[$pv] as $condition)
{
$thisquestion .= "'$condition', ";
}
$thisquestion = substr($thisquestion, 0, -2)
. ")";
//we collect all the to be selected data in this array
$selects[]=$thisquestion;
}
//M - Multiple choice
//P - Multiple choice with comments
elseif ($firstletter == "M" || $firstletter == "P")
{
$mselects=array();
//create a list out of the $pv array
list($lsid, $lgid, $lqid) = explode("X", $pv);
$aresult=Questions::model()->findAll(array('order'=>'question_order', 'condition'=>'parent_qid=:parent_qid AND scale_id=0', 'params'=>array(":parent_qid"=>$lqid)));
foreach ($aresult as $arow)
{
// only add condition if answer has been chosen
if (in_array($arow['title'], $_POST[$pv]))
{
$mselects[]=Yii::app()->db->quoteColumnName(substr($pv, 1, strlen($pv)).$arow['title'])." = 'Y'";
}
}
/* If there are mutliple conditions generated from this multiple choice question, join them using the boolean "OR" */
if ($mselects)
{
$thismulti=implode(" OR ", $mselects);
$selects[]="($thismulti)";
unset($mselects);
}
}
//N - Numerical Input
//K - Multiple Numerical Input
elseif ($firstletter == "N" || $firstletter == "K")
{
//value greater than
if (substr($pv, strlen($pv)-1, 1) == "G" && $_POST[$pv] != "")
{
$selects[]=Yii::app()->db->quoteColumnName(substr($pv, 1, -1))." > ".sanitize_int($_POST[$pv]);
}
//value less than
if (substr($pv, strlen($pv)-1, 1) == "L" && $_POST[$pv] != "")
{
$selects[]=Yii::app()->db->quoteColumnName(substr($pv, 1, -1))." < ".sanitize_int($_POST[$pv]);
}
}
//| - File Upload Question Type
else if ($firstletter == "|")
{
// no. of files greater than
if (substr($pv, strlen($pv)-1, 1) == "G" && $_POST[$pv] != "")
$selects[]=Yii::app()->db->quoteColumnName(substr($pv, 1, -1)."_filecount")." > ".sanitize_int($_POST[$pv]);
// no. of files less than
if (substr($pv, strlen($pv)-1, 1) == "L" && $_POST[$pv] != "")
$selects[]=Yii::app()->db->quoteColumnName(substr($pv, 1, -1)."_filecount")." < ".sanitize_int($_POST[$pv]);
}
//"id" is a built in field, the unique database id key of each response row
elseif (substr($pv, 0, 2) == "id")
{
if (substr($pv, strlen($pv)-1, 1) == "G" && $_POST[$pv] != "")
{
$selects[]=Yii::app()->db->quoteColumnName(substr($pv, 0, -1))." > '".$_POST[$pv]."'";
}
if (substr($pv, strlen($pv)-1, 1) == "L" && $_POST[$pv] != "")
{
$selects[]=Yii::app()->db->quoteColumnName(substr($pv, 0, -1))." < '".$_POST[$pv]."'";
}
}
//T - Long Free Text
//Q - Multiple Short Text
elseif (($firstletter == "T" || $firstletter == "Q" ) && $_POST[$pv] != "")
{
$selectSubs = array();
//We intepret and * and % as wildcard matches, and use ' OR ' and , as the seperators
$pvParts = explode(",",str_replace('*','%', str_replace(' OR ',',',$_POST[$pv])));
if(is_array($pvParts) AND count($pvParts)){
foreach($pvParts AS $pvPart){
$selectSubs[]=Yii::app()->db->quoteColumnName(substr($pv, 1, strlen($pv)))." LIKE '".trim($pvPart)."'";
}
if(count($selectSubs)){
$selects[] = ' ('.implode(' OR ',$selectSubs).') ';
}
}
}
//D - Date
elseif ($firstletter == "D" && $_POST[$pv] != "")
{
//Date equals
if (substr($pv, -1, 1) == "eq")
{
$selects[]=Yii::app()->db->quoteColumnName(substr($pv, 1, strlen($pv)-2))." = '".$_POST[$pv]."'";
}
else
{
//date less than
if (substr($pv, -1, 1) == "less")
{
$selects[]= Yii::app()->db->quoteColumnName(substr($pv, 1, strlen($pv)-2)) . " >= '".$_POST[$pv]."'";
}
//date greater than
if (substr($pv, -1, 1) == "more")
{
$selects[]= Yii::app()->db->quoteColumnName(substr($pv, 1, strlen($pv)-2)) . " <= '".$_POST[$pv]."'";
}
}
}
//check for datestamp of given answer
elseif (substr($pv, 0, 9) == "datestamp")
{
//timestamp equals
$formatdata=getDateFormatData(Yii::app()->session['dateformat']);
if (substr($pv, -1, 1) == "E" && !empty($_POST[$pv]))
{
$datetimeobj = new Date_Time_Converter($_POST[$pv], $formatdata['phpdate'].' H:i');
$_POST[$pv]=$datetimeobj->convert("Y-m-d");
$selects[] = Yii::app()->db->quoteColumnName('datestamp')." >= '".$_POST[$pv]." 00:00:00' and ".Yii::app()->db->quoteColumnName('datestamp')." <= '".$_POST[$pv]." 23:59:59'";
}
else
{
//timestamp less than
if (substr($pv, -1, 1) == "L" && !empty($_POST[$pv]))
{
$datetimeobj = new Date_Time_Converter($_POST[$pv], $formatdata['phpdate'].' H:i');
$_POST[$pv]=$datetimeobj->convert("Y-m-d H:i:s");
$selects[]= Yii::app()->db->quoteColumnName('datestamp')." < '".$_POST[$pv]."'";
}
//timestamp greater than
if (substr($pv, -1, 1) == "G" && !empty($_POST[$pv]))
{
$datetimeobj = new Date_Time_Converter($_POST[$pv], $formatdata['phpdate'].' H:i');
$_POST[$pv]=$datetimeobj->convert("Y-m-d H:i:s");
$selects[]= Yii::app()->db->quoteColumnName('datestamp')." > '".$_POST[$pv]."'";
}
}
}
}
} //end foreach -> loop through filter options to create SQL
return $selects;
}
/**
* Simple function to square a value
*
* @param mixed $number Value to square
*/
function square($number)
{
if($number == 0)
{
$squarenumber = 0;
}
else
{
$squarenumber = $number * $number;
}
return $squarenumber;
}
class statistics_helper {
/**
* @var pdf
*/
protected $pdf;
/**
* The Excel worksheet we are working on
*
* @var Spreadsheet_Excel_Writer_Worksheet
*/
protected $sheet;
/**
* The current Excel workbook we are working on
*
* @var Xlswriter
*/
protected $workbook;
/**
* Keeps track of the current row in Excel sheet
*
* @var int
*/
protected $xlsRow = 0;
/**
* Builds an array containing information about this particular question/answer combination
*
* @param string $rt The code passed from the statistics form listing the field/answer (SGQA) combination to be displayed
* @param mixed $language The language to present output in
* @param mixed $surveyid The survey id
* @param string $outputType
*
* @output array $output An array containing "alist"=>A list of answers to the question in the form of an array ($alist array
* contains an array for every field to be displayed - with the Actual Question Code/Title, The text (flattened)
* of the question, and the fieldname where the data is stored.
* "qtitle"=>The title of the question,
* "qquestion"=>The description of the question,
* "qtype"=>The question type code
*/
protected function buildOutputList($rt, $language, $surveyid, $outputType, $sql, $oLanguage) {
//Set up required variables
$alist=array();
$qtitle="";
$qquestion="";
$qtype="";
$statlang = $oLanguage;
$firstletter = substr($rt, 0, 1);
$fieldmap=createFieldMap($surveyid, "full", false, false, $language);
$sDatabaseType = Yii::app()->db->getDriverName();
$statisticsoutput="";
$qqid = "";
/* Some variable depend on output type, actually : only line feed */
switch($outputType)
{
case 'xls':
case 'pdf':
$linefeed = "\n";
break;
case 'html':
$linefeed = "<br />\n";
break;
default:
break;
}
//M - Multiple choice, therefore multiple fields - one for each answer
if ($firstletter == "M" || $firstletter == "P")
{
//get SGQ data
list($qsid, $qgid, $qqid) = explode("X", substr($rt, 1, strlen($rt)), 3);
//select details for this question
$nresult = Questions::model()->find('language=:language AND parent_qid=0 AND qid=:qid', array(':language'=>$language, ':qid'=>$qqid));
$qtitle=$nresult->title;
$qtype=$nresult->type;
$qquestion=flattenText($nresult->question);
$qlid=$nresult->parent_qid;
$qother=$nresult->other;
//1. Get list of answers
$result=Questions::model()->findAll(array('order'=>'question_order',
'condition'=>'language=:language AND parent_qid=:qid AND scale_id=0',
'params'=>array(':language'=>$language, ':qid'=>$qqid)
));
foreach ($result as $row)
{
$mfield=substr($rt, 1, strlen($rt)).$row['title'];
$alist[]=array($row['title'], flattenText($row['question']), $mfield);
}
//Add the "other" answer if it exists
if ($qother == "Y")
{
$mfield=substr($rt, 1, strlen($rt))."other";
$alist[]=array($statlang->gT("Other"), $statlang->gT("Other"), $mfield);
}
}
//S - Short Free Text and T - Long Free Text
elseif ($firstletter == "T" || $firstletter == "S") //Short and long text
{
//search for key
$fld = substr($rt, 1, strlen($rt));
$fielddata=$fieldmap[$fld];
list($qanswer, $qlid)=!empty($fielddata['aid']) ? explode("_", $fielddata['aid']) : array("", "");
//get question data
$nresult = Questions::model()->find('language=:language AND parent_qid=0 AND qid=:qid', array(':language'=>$language, ':qid'=>$fielddata['qid']));
$qtitle=$nresult->title;
$qtype=$nresult->type;
$qquestion=flattenText($nresult->question);
$qlid=$nresult->parent_qid;
$mfield=substr($rt, 1, strlen($rt));
//Text questions either have an answer, or they don't. There's no other way of quantising the results.
// So, instead of building an array of predefined answers like we do with lists & other types,
// we instead create two "types" of possible answer - either there is a response.. or there isn't.
// This question type then can provide a % of the question answered in the summary.
$alist[]=array("Answers", $statlang->gT("Answer"), $mfield);
$alist[]=array("NoAnswer", $statlang->gT("No answer"), $mfield);
}
//Q - Multiple short text
elseif ($firstletter == "Q")
{
//Build an array of legitimate qid's for testing later
$qidquery = Questions::model()->findAll("sid=:surveyid AND parent_qid=0", array(":surveyid"=>$surveyid));
foreach ($qidquery as $row) { $legitqids[] = $row['qid']; }
//get SGQ data
list($qsid, $qgid, $qqid) = explode("X", substr($rt, 1, strlen($rt)), 3);
//separating another ID
$tmpqid=substr($qqid, 0, strlen($qqid)-1);
//check if we have a QID that actually exists. if not create them by substringing. Note that
//all of this is due to the fact that when we create a field for an subquestion, we don't seperate
//the question id from the subquestion id - and this is a weird, backwards way of doing that.
while (!in_array ($tmpqid,$legitqids)) $tmpqid=substr($tmpqid, 0, strlen($tmpqid)-1);
//length of QID
$iQuestionIDlength=strlen($tmpqid);
//we somehow get the answer code (see SQL later) from the $qqid
$qaid=substr($qqid, $iQuestionIDlength, strlen($qqid)-$iQuestionIDlength);
//get question data
$nresult = Questions::model()->find('language=:language AND parent_qid=0 AND qid=:qid', array(':language'=>$language, ':qid'=>substr($qqid, 0, $iQuestionIDlength)));
$qtitle=$nresult->title;
$qtype=$nresult->type;
$qquestion=flattenText($nresult->question);
//more substrings
$count = substr($qqid, strlen($qqid)-1);
//get answers / subquestion text
$nresult = Questions::model()->find(array('order'=>'question_order',
'condition'=>'language=:language AND parent_qid=:parent_qid AND title=:title',
'params'=>array(':language'=>$language, ':parent_qid'=>substr($qqid, 0, $iQuestionIDlength), ':title'=>$qaid)
));
$atext=flattenText($nresult->question);
//add this to the question title
$qtitle .= " [$atext]";
//even more substrings...
$mfield=substr($rt, 1, strlen($rt));
//Text questions either have an answer, or they don't. There's no other way of quantising the results.
// So, instead of building an array of predefined answers like we do with lists & other types,
// we instead create two "types" of possible answer - either there is a response.. or there isn't.
// This question type then can provide a % of the question answered in the summary.
$alist[]=array("Answers", $statlang->gT("Answer"), $mfield);
$alist[]=array("NoAnswer", $statlang->gT("No answer"), $mfield);
}
//RANKING OPTION
elseif ($firstletter == "R")
{
//getting the needed IDs somehow
$lengthofnumeral=substr($rt, strpos($rt, "-")+1, 1);
list($qsid, $qgid, $qqid) = explode("X", substr($rt, 1, strpos($rt, "-")-($lengthofnumeral+1)), 3);
//get question data
$nquery = "SELECT title, type, question FROM {{questions}} WHERE parent_qid=0 AND qid='$qqid' AND language='{$language}'";
$nresult = Yii::app()->db->createCommand($nquery)->query();
//loop through question data
foreach ($nresult->readAll() as $nrow)
{
$nrow=array_values($nrow);
$qtitle=flattenText($nrow[0]). " [".substr($rt, strpos($rt, "-")-($lengthofnumeral), $lengthofnumeral)."]";
$qtype=$nrow[1];
$qquestion=flattenText($nrow[2]). "[".$statlang->gT("Ranking")." ".substr($rt, strpos($rt, "-")-($lengthofnumeral), $lengthofnumeral)."]";
}
//get answers
$query="SELECT code, answer FROM {{answers}} WHERE qid='$qqid' AND scale_id=0 AND language='{$language}' ORDER BY sortorder, answer";
$result=Yii::app()->db->createCommand($query)->query();
//loop through answers
foreach ($result->readAll() as $row)
{
$row=array_values($row);
//create an array containing answer code, answer and fieldname(??)
$mfield=substr($rt, 1, strpos($rt, "-")-1);
$alist[]=array("$row[0]", flattenText($row[1]), $mfield);
}
}
else if ($firstletter == "|") // File UPload
{
//get SGQ data
list($qsid, $qgid, $qqid) = explode("X", substr($rt, 1, strlen($rt)), 3);
//select details for this question
$nresult = Questions::model()->find('language=:language AND parent_qid=0 AND qid=:qid', array(':language'=>$language, ':qid'=>substr($qqid, 0, $iQuestionIDlength)));
$qtitle=$nresult->title;
$qtype=$nresult->type;
$qquestion=flattenText($nresult->question);
$qlid=$nresult->parent_qid;
$qother=$nresult->other;
/*
4) Average size of file per respondent
5) Average no. of files
5) Summary/count of file types (ie: 37 jpg, 65 gif, 12 png)
6) Total size of all files (useful if you re about to download them all)
7) You could also add things like smallest file size, largest file size, median file size
8) no. of files corresponding to each extension
9) max file size
10) min file size
*/
// 1) Total number of files uploaded
// 2) Number of respondents who uploaded at least one file (with the inverse being the number of respondents who didn t upload any)
$fieldname=substr($rt, 1, strlen($rt));
$query = "SELECT SUM(".Yii::app()->db->quoteColumnName($fieldname.'_filecount').") as sum, AVG(".Yii::app()->db->quoteColumnName($fieldname.'_filecount').") as avg FROM {{survey_$surveyid}}";
$result=Yii::app()->db->createCommand($query)->query();
$showem = array();
foreach ($result->readAll() as $row)
{
$showem[]=array($statlang->gT("Total number of files"), $row['sum']);
$showem[]=array($statlang->gT("Average no. of files per respondent"), $row['avg']);
}
$query = "SELECT ". $fieldname ." as json FROM {{survey_$surveyid}}";
$result=Yii::app()->db->createCommand($query)->query();
$responsecount = 0;
$filecount = 0;
$size = 0;
foreach ($result->readAll() as $row)
{
$json = $row['json'];
$phparray = json_decode($json);
foreach ($phparray as $metadata)
{
$size += (int) $metadata->size;
$filecount++;
}
$responsecount++;
}
$showem[] = array($statlang->gT("Total size of files"), $size." KB");
$showem[] = array($statlang->gT("Average file size"), $size/$filecount . " KB");
$showem[] = array($statlang->gT("Average size per respondent"), $size/$responsecount . " KB");
/* $query="SELECT title, question FROM {{questions}} WHERE parent_qid='$qqid' AND language='{$language}' ORDER BY question_order";
$result=db_execute_num($query) or safeDie("Couldn't get list of subquestions for multitype<br />$query<br />");
//loop through multiple answers
while ($row=$result->FetchRow())
{
$mfield=substr($rt, 1, strlen($rt))."$row[0]";
//create an array containing answer code, answer and fieldname(??)
$alist[]=array("$row[0]", flattenText($row[1]), $mfield);
}
*/
//outputting
switch($outputType)
{
case 'xls':
$headXLS = array();
$tableXLS = array();
$footXLS = array();
$xlsTitle = sprintf($statlang->gT("Field summary for %s"),html_entity_decode($qtitle,ENT_QUOTES,'UTF-8'));
$xlsDesc = html_entity_decode($qquestion,ENT_QUOTES,'UTF-8');
$this->xlsRow++;
$this->xlsRow++;
$this->xlsRow++;
$this->sheet->write($this->xlsRow, 0,$xlsTitle);
$this->xlsRow++;
$this->sheet->write($this->xlsRow, 0,$xlsDesc);
$headXLS[] = array($statlang->gT("Calculation"),$statlang->gT("Result"));
$this->xlsRow++;
$this->sheet->write($this->xlsRow, 0,$statlang->gT("Calculation"));
$this->sheet->write($this->xlsRow, 1,$statlang->gT("Result"));
break;
case 'pdf':
$headPDF = array();
$tablePDF = array();
$footPDF = array();
$pdfTitle = sprintf($statlang->gT("Field summary for %s"),html_entity_decode($qtitle,ENT_QUOTES,'UTF-8'));
$titleDesc = html_entity_decode($qquestion,ENT_QUOTES,'UTF-8');
$headPDF[] = array($statlang->gT("Calculation"),$statlang->gT("Result"));
break;
case 'html':
$statisticsoutput .= "\n<table class='statisticstable' >\n"
."\t<thead><tr><th colspan='2' align='center'><strong>".sprintf($statlang->gT("Field summary for %s"),$qtitle).":</strong>"
."</th></tr>\n"
."\t<tr><th colspan='2' align='center'><strong>$qquestion</strong></th></tr>\n"
."\t<tr>\n\t\t<th width='50%' align='center' ><strong>"
.$statlang->gT("Calculation")."</strong></th>\n"
."\t\t<th width='50%' align='center' ><strong>"
.$statlang->gT("Result")."</strong></th>\n"
."\t</tr></thead>\n";
foreach ($showem as $res)
$statisticsoutput .= "<tr><td>".$res[0]."</td><td>".$res[1]."</td></tr>";
break;
default:
break;
}
}
//N = numerical input
//K = multiple numerical input
elseif ($firstletter == "N" || $firstletter == "K") //NUMERICAL TYPE
{
//Zero handling
if (!isset($excludezeros)) //If this hasn't been set, set it to on as default:
{
$excludezeros=1;
}
//check last character, greater/less/equals don't need special treatment
if (substr($rt, -1) == "G" || substr($rt, -1) == "L" || substr($rt, -1) == "=")
{
//DO NOTHING
}
else
{
$showem = array();
$fld = substr($rt, 1, strlen($rt));
$fielddata=$fieldmap[$fld];
$qtitle = flattenText($fielddata['title']);
$qtype = $fielddata['type'];
$qquestion = $fielddata['question'];
//Get answer texts for multiple numerical
if(substr($rt, 0, 1) == "K")
{
//put single items in brackets at output
$qtitle .= " [" . $fielddata['subquestion'] . "]";
}
//outputting
switch($outputType)
{
case 'xls':
$headXLS = array();
$tableXLS = array();
$footXLS = array();
$xlsTitle = sprintf($statlang->gT("Field summary for %s"),html_entity_decode($qtitle,ENT_QUOTES,'UTF-8'));
$xlsDesc = html_entity_decode($qquestion,ENT_QUOTES,'UTF-8');
$this->xlsRow++;
$this->xlsRow++;
$this->xlsRow++;
$this->sheet->write($this->xlsRow,0,$xlsTitle);
$this->xlsRow++;
$this->sheet->write($this->xlsRow,0,$xlsDesc);
$headXLS[] = array($statlang->gT("Calculation"),$statlang->gT("Result"));
$this->xlsRow++;
$this->sheet->write($this->xlsRow,0,$statlang->gT("Calculation"));
$this->sheet->write($this->xlsRow,1,$statlang->gT("Result"));
break;
case 'pdf':
$headPDF = array();
$tablePDF = array();
$footPDF = array();
$pdfTitle = sprintf($statlang->gT("Field summary for %s"),html_entity_decode($qtitle,ENT_QUOTES,'UTF-8'));
$titleDesc = html_entity_decode($qquestion,ENT_QUOTES,'UTF-8');
$headPDF[] = array($statlang->gT("Calculation"),$statlang->gT("Result"));
break;
case 'html':
$statisticsoutput .= "\n<table class='statisticstable' >\n"
."\t<thead><tr><th colspan='2' align='center'><strong>".sprintf($statlang->gT("Field summary for %s"),$qtitle).":</strong>"
."</th></tr>\n"
."\t<tr><th colspan='2' align='center'><strong>$qquestion</strong></th></tr>\n"
."\t<tr>\n\t\t<th width='50%' align='center' ><strong>"
.$statlang->gT("Calculation")."</strong></th>\n"
."\t\t<th width='50%' align='center' ><strong>"
.$statlang->gT("Result")."</strong></th>\n"
."\t</tr></thead>\n";
break;
default:
break;
}
//this field is queried using mathematical functions
$fieldname=substr($rt, 1, strlen($rt));
//special treatment for MS SQL databases
if ($sDatabaseType == 'mssql' || $sDatabaseType == 'sqlsrv')
{
//standard deviation
$query = "SELECT STDEVP(".Yii::app()->db->quoteColumnName($fieldname)."*1) as stdev";
}
//other databases (MySQL, Postgres)
else
{
//standard deviation
$query = "SELECT STDDEV(".Yii::app()->db->quoteColumnName($fieldname).") as stdev";
}
//sum
$query .= ", SUM(".Yii::app()->db->quoteColumnName($fieldname)."*1) as sum";
//average
$query .= ", AVG(".Yii::app()->db->quoteColumnName($fieldname)."*1) as average";
//min
$query .= ", MIN(".Yii::app()->db->quoteColumnName($fieldname)."*1) as minimum";
//max
$query .= ", MAX(".Yii::app()->db->quoteColumnName($fieldname)."*1) as maximum";
//Only select responses where there is an actual number response, ignore nulls and empties (if these are included, they are treated as zeroes, and distort the deviation/mean calculations)