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dbFunctions.php
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dbFunctions.php
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<?php
function dbConnectMySQL($host, $user, $pass, $db, $port) {
if ($host!="" && $user!="" && $pass!=""&& $db!="") {
$connection = new mysqli($host,$user,$pass, $db);
if ($connection->connect_errno){
echo "Failed to connect to MySQL: (" . $connection->connect_errno . ") " . $connection->connect_error;
return false;
}
else {
$connection->set_charset("utf8");
return $connection;
}
}
return false;
}
function dbDisconnectMySQL($connection) {
if ((mysqli_close($connection))) {
return true;
}
return false;
}
function getConn() {
global $config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort;
return dbConnectMySQL($config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort);
}
function insertTracking($usr, $grp, $sid, $actionsrc, $actiontype, $docsrc, $docno, $filename, $result, $comment){
global $config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort;
$sql = "INSERT INTO tracking (actiondate,uid,grp,domain,sid,actionsrc,actiontype,docno,docsrc,filename,result,comment) ";
//$sql .= " values (now(),'".$usr."','".$grp."','".$course."','".$sid."','".$actionsrc."','".$actiontype."','".$docno."','".$docsrc."','".$filename."','".$result."','".$comment."');";
$sql .= " values (now(),'".$usr."','".$grp."',(SELECT C.domain FROM course C, groups G where G.grp='".$grp."' and G.courseid=C.courseid),'".$sid."','".$actionsrc."','".$actiontype."','".$docno."','".$docsrc."','".$filename."','".$result."','".$comment."');";
//echo $sql."<br />";
$id = 0;
$connection = dbConnectMySQL($config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort);
if ($connection){
mysqli_query($connection, $sql);
$id = mysqli_insert_id($connection);
dbDisconnectMySQL($connection);
}
return $id;
}
function insertProgress($usr, $grp, $sid, $bookid, $docno, $page, $question, $top, $bottom, $time) {
$docInfo = getDocInfo($docno);
$start_page = $docInfo["spage"];
$current_page = $start_page + $page - 1;
global $config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort;
$sql = "SELECT docno, (".$current_page." - spage + 1) AS page FROM document WHERE spage <= ".$current_page." && epage >= ".$current_page." AND docsrc = '".$bookid."'";
$connection = dbConnectMySQL($config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort);
$docid_pages = array();
if ($connection){
if($res = mysqli_query($connection, $sql)){
if(mysqli_num_rows($res) > 0){
while($row = mysqli_fetch_array($res)){
insertProgressForEach($usr, $grp, $sid, $bookid, $row["docno"], $row["page"], $question, $top, $bottom, $time);
}
}
mysqli_free_result($res);
}
dbDisconnectMySQL($connection);
}
}
function insertProgressForEach($usr, $grp, $sid, $bookid, $docno, $page, $question, $top, $bottom, $time) {
$mysqli = getConn();
$stmt = $mysqli->prepare("INSERT INTO progress (date,usr,grp,sid,bookid,docno,page,question,top,bottom,time) VALUES (now(),?,?,?,?,?,?,?,?,?,?)");
$stmt->bind_param('ssssssiddi', $usr, $grp, $sid, $bookid, $docno, $page, $question, $top, $bottom, $time);
$stmt->execute();
$stmt->fetch();
}
function getTotalPageReadForDocs($usr, $grp, $all_docnos) {
global $config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort;
$sql = "SELECT docno, COUNT(DISTINCT page) AS numPage FROM progress WHERE usr = '".$usr."' AND grp = '".$grp."' AND docno in ".$all_docnos. " GROUP BY docno";
//echo $sql."\n";
$connection = dbConnectMySQL($config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort);
$docid_pages = array();
if ($connection){
if($res = mysqli_query($connection, $sql)){
if(mysqli_num_rows($res) > 0){
while($row = mysqli_fetch_array($res)){
$docid_pages[$row["docno"]] = $row["numPage"];
}
}
mysqli_free_result($res);
}
dbDisconnectMySQL($connection);
}
return $docid_pages;
}
function getTotalPageRead($usr, $grp, $docid) {
$mysqli = getConn();
$stmt = $mysqli->prepare("SELECT COUNT(DISTINCT page) AS numPage FROM progress WHERE usr = ? AND grp = ? AND docno like ?");
$newdocid = '%-'.$docid;
$stmt->bind_param('sss', $usr, $grp, $newdocid);
$stmt->execute();
$stmt->bind_result($numPage);
$stmt->fetch();
return $numPage;
}
function getTotalPageForDocs($all_docnos) {
global $config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort;
$sql = "SELECT docid, ((epage - spage) + 1) AS numPage FROM document WHERE docno in ".$all_docnos;
$connection = dbConnectMySQL($config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort);
$docid_pages = array();
if ($connection){
if($res = mysqli_query($connection, $sql)){
if(mysqli_num_rows($res) > 0){
while($row = mysqli_fetch_array($res)){
$docid_pages[$row["docid"]] = $row["numPage"];
}
}
mysqli_free_result($res);
}
dbDisconnectMySQL($connection);
}
return $docid_pages;
}
function getTotalPageForDoc($docid) {
$mysqli = getConn();
$stmt = $mysqli->prepare("SELECT ((epage - spage) + 1) AS numPage FROM document WHERE docid = ?");
$stmt->bind_param('s', $docid);
$stmt->execute();
$stmt->bind_result($numPage);
$stmt->fetch();
return $numPage;
}
function insertAnswer($usr, $grp, $sid, $id, $last, $last_correct) {
$mysqli = getConn();
$stmt = $mysqli->prepare("INSERT INTO submitted_answers (usr,grp,sid,idquestions,time,answer,correct) VALUES (?,?,?,?,now(),?,?)");
$stmt->bind_param('sssisi', $usr, $grp, $sid, $id, $last, $last_correct);
$stmt->execute();
$stmt->fetch();
}
function getLastAnswer($usr, $grp, $id) {
$mysqli = getConn();
$stmt = $mysqli->prepare("SELECT answer FROM submitted_answers WHERE usr = ? AND grp = ? AND idquestions = ? ORDER BY time DESC LIMIT 1");
$stmt->bind_param('ssi', $usr, $grp, $id);
$stmt->execute();
$stmt->bind_result($last);
$stmt->store_result(); // without this, num_rows won't work
$stmt->fetch();
if ($stmt->num_rows == 0) {
$last = '[]';
}
return json_decode($last);
}
function getLastAnswerStatus($usr, $grp, $id) {
$mysqli = getConn();
$stmt = $mysqli->prepare("SELECT correct FROM submitted_answers WHERE usr = ? AND grp = ? AND idquestions = ? ORDER BY time DESC LIMIT 1");
$stmt->bind_param('ssi', $usr, $grp, $id);
$stmt->execute();
$stmt->bind_result($last_correct);
$stmt->store_result(); // without this, num_rows won't work
$stmt->fetch();
$status = 3;
if ($stmt->num_rows == 0) {
$status = 2;
} else if ($last_correct == 1) {
$status = 0;
} else if ($last_correct == 0) {
$status = 1;
}
return $status;
}
// given some docid, return the other docids that share a question
function docidToDocids($docid) {
$mysqli = getConn();
$docids = array();
// get questionId for all documents that share the same start page as this document
// could probably do this in less database calls (using join?)
$stmt = $mysqli->prepare("SELECT docsrc,spage FROM document WHERE docid = ?");
$stmt->bind_param('i', $docid);
$stmt->execute();
$stmt->bind_result($docsrc, $spage);
while ($stmt->fetch()) {
// connection had to be re-established here, or it didn't work
$mysqli = getConn();
$stmt2 = $mysqli->prepare("SELECT docid FROM document WHERE docsrc = ? AND spage = ?");
$stmt2->bind_param('si', $docsrc, $spage);
$stmt2->execute();
$stmt2->bind_result($did);
while ($stmt2->fetch()) {
array_push($docids, $did);
}
}
return $docids;
}
function docidToQuestionIds($docid) {
$mysqli = getConn();
$results = array();
$docids = docidToDocids($docid);
foreach ($docids as $id) {
$mysqli = getConn();
$stmt = $mysqli->prepare("SELECT idquestions FROM questions WHERE docid = ?");
$stmt->bind_param('i', $id);
$stmt->execute();
$stmt->bind_result($questions);
while ($stmt->fetch()) {
array_push($results, $questions);
}
}
return $results;
}
function getTotalQuestionIdsForDocs($all_docids) {
global $config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort;
$sql = "SELECT docid, GROUP_CONCAT(CONVERT(idquestions, CHAR(20))) AS questionids FROM questions WHERE docid in ".$all_docids." GROUP BY docid";
$connection = dbConnectMySQL($config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort);
$docid_questionids = array();
if ($connection){
if($res = mysqli_query($connection, $sql)){
if(mysqli_num_rows($res) > 0){
while($row = mysqli_fetch_array($res)){
$docid_questionids[$row["docid"]] = $row["questionids"];
}
}
mysqli_free_result($res);
}
dbDisconnectMySQL($connection);
}
return $docid_questionids;
}
function getQuestion($questionId) {
$mysqli = getConn();
$stmt = $mysqli->prepare("SELECT question FROM questions WHERE idquestions = ?");
$stmt->bind_param('i', $questionId);
$stmt->execute();
$stmt->bind_result($question);
$stmt->fetch();
return $question;
}
function getAnswers($questionId) {
$mysqli = getConn();
$stmt = $mysqli->prepare("SELECT answer_text FROM answers WHERE idquestions = ?");
$stmt->bind_param('i', $questionId);
$stmt->execute();
$results = array();
$stmt->bind_result($answer);
while ($stmt->fetch()) {
array_push($results, $answer);
}
return $results;
}
function getCorrectAnswerIndices($questionId) {
$mysqli = getConn();
$stmt = $mysqli->prepare("SELECT answer_num FROM answers WHERE idquestions = ? AND correct = 1");
$stmt->bind_param('i', $questionId);
$stmt->execute();
$results = array();
$stmt->bind_result($answer);
while ($stmt->fetch()) {
array_push($results, $answer);
}
return $results;
}
function getDocInfo($docno){
global $config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort;
$result = array();
$sql = "select docid,docsrc,title,spage,epage from document where docno = '".$docno."';";
$connection = dbConnectMySQL($config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort);
if ($connection){
if($res = mysqli_query($connection, $sql)){
if(mysqli_num_rows($res) > 0){
while($row=mysqli_fetch_array($res)){
$result["docid"] = $row["docid"];
$result["docsrc"] = $row["docsrc"];
$result["title"] = $row["title"];
$result["spage"] = $row["spage"];
$result["epage"] = $row["epage"];
}
}
mysqli_free_result($res);
}
dbDisconnectMySQL($connection);
}
return $result;
}
function getDocInfoById($docid,$bookid){
global $config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort;
$result = array();
$sql = "select docid,docsrc,title,spage,epage from document where docid = '".$docid."' and docsrc='".$bookid."';";
$connection = dbConnectMySQL($config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort);
if ($connection){
if($res = mysqli_query($connection, $sql)){
if(mysqli_num_rows($res) > 0){
while($row=mysqli_fetch_array($res)){
$result["docid"] = $row["docid"];
$result["docsrc"] = $row["docsrc"];
$result["title"] = $row["title"];
$result["spage"] = $row["spage"];
$result["epage"] = $row["epage"];
}
}
mysqli_free_result($res);
}
dbDisconnectMySQL($connection);
}
return $result;
}
function getBookInfo($bookid){
global $config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort;
$result = array();
$sql = "select bookkey,format,folder,title,authors from book where bookkey = '".$bookid."';";
$connection = dbConnectMySQL($config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort);
if ($connection){
if($res = mysqli_query($connection, $sql)){
if(mysqli_num_rows($res) > 0){
while($row=mysqli_fetch_array($res)){
$result["bookkey"] = $row["bookkey"];
$result["format"] = $row["format"];
$result["folder"] = $row["folder"];
$result["title"] = $row["title"];
$result["authors"] = $row["authors"];
}
}
mysqli_free_result($res);
}
dbDisconnectMySQL($connection);
}
return $result;
}
// returns section url
// pages are real (book) pages values
// $disp_page = current page
// $target_page = page to move
//change by jennifer
// @@@@
function getSectionByPage($bookid, $disp_page, $target_page) {
global $config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort;
$i_disp_page = pconv($bookid, $disp_page, 'page');
$i_target_page = pconv($bookid, $target_page, 'page');
$docno = "";
$in_section_page = "";
$sql = "SELECT docno, spage, epage FROM document where docno like '".$bookid."%' and spage <= ".$i_target_page." and ".$i_target_page." <= epage order by docid asc;";
$connection = dbConnectMySQL($config_dbHost, $config_dbUser, $config_dbPass, $config_dbName, $config_dbPort);
if ($connection){
if($res = mysqli_query($connection, $sql)){
$candid_count = mysqli_num_rows($res);
// direct destination
if($candid_count == 1) {
$row = mysqli_fetch_array($res);
$docno = $row["docno"];
$in_section_page = $i_target_page - $row["spage"] + 1;
}
// multimple candidates
else if($candid_count > 1) {
// going forward
if($i_target_page > $i_disp_page) {
$row = mysqli_fetch_array($res);
$docno = $row["docno"];
$in_section_page = $i_target_page - $row["spage"] + 1;
}
// going backward
if($i_target_page < $i_disp_page) {
while($row = mysqli_fetch_array($res)) {
$docno = $row["docno"];
$section_start_page = $row["spage"];
}
$in_section_page = $i_target_page - $section_start_page + 1;
}
}
// no direct destination
else {
// going forward
$res2 = null;
if($i_target_page > $i_disp_page) {
$sql2 = "SELECT docno, spage, epage FROM document where docno like '$bookid%' and spage > $i_target_page order by docno asc limit 0, 1;";
$res2 = mysqli_query($connection, $sql2);
$row2 = mysqli_fetch_row($res2);
$docno = $row2[0];
$in_section_page = 1;
}
// going backward
if($i_target_page < $i_disp_page) {
$sql2 = "SELECT docno, spage, epage FROM document where docno like '$bookid%' and spage < $i_target_page order by docno desc limit 0, 1;";
$res2 = mysqli_query($connection, $sql2);
$row2 = mysqli_fetch_row($res2);
$docno = $row2[0];
$in_section_page = $row2[2] - $row2[1] + 1;
}
mysqli_free_result($res2);
}
/*
if(mysqli_num_rows($res) > 0){
while($row=mysqli_fetch_array($res)){
$result["docno"] = $row["docno"];
$result["spage"] = $row["spage"];
$result["epage"] = $row["epage"];
}
}
*/
mysqli_free_result($res);
}
dbDisconnectMySQL($connection);
}
//return docno;
if($docno == "")
return false;
//change by jennifer
// $res = "reader.php?bookid=".$bookid."&docno=".$docno."&page=".$in_section_page."&page_nav=".$i_target_page."&usr=".$usr."&grp=".$grp."&sid=".$sid;
//$res = "reader.php?bookid=$bookid&docno=$docno&page=".$in_section_page."&page_nav=$i_target_page";
return "&docno=".$docno."&page=".$in_section_page."&page_nav=".$i_target_page;
}
// converts file number <-> real (book) page
// $mode == 'file' : from file -> page
// $mode == 'page' : from page -> file
function pconv($bookid, $source, $mode = 'file') {
$offset = array(
"shnm" => 18,
"dix" => 27,
"preece" => 24,
"lamming" => 0,
"tdo" => 0);
if($mode == 'file')
$res = $source - $offset[$bookid];
else
$res = $source + $offset[$bookid];
return $res;
}
?>