Repost: Creating a RSS feed with PHP - php

Question

I asked how to do this before but it seems I needed to put more code to really get an answer.
I have a reddit type site, and I am trying to create a rss feed this is the code, but I get a Fatal error: Uncaught exception 'Exception' with message 'Query failed'
Here its the code:
<?php
require_once($_SERVER['DOCUMENT_ROOT'].'/config.php');
require_once(SITE_ROOT.'includes/exceptions.php');
require_once(SITE_ROOT.'data/model.php');
require_once(SITE_ROOT.'data/comment.php');
class Article extends Model
{
private $id;
private $user_id;
private $url;
private $title;
private $description;
private $ranking;
private $points;
function __construct($title = ' ', $description = ' ', $url = ' ', $username = ' ', $created = ' ', $modified = '') {
$this->setId(0);
$this->setCreated($created);
$this->setModified($modified);
$this->setUsername($username);
$this->setUrl($url);
$this->setTitle($title);
$this->setDescription($description);
$this->setRanking(0.0);
$this->setPoints(0);
}
function getId(){
return $this->id;
}
private function setId($value){
$this->id = $value;
}
function getUsername(){
return $this->username;
}
function setUsername($value){
$this->username = $value;
}
function getUrl(){
return $this->url;
}
function setUrl($value){
$this->url = $value;
}
function getTitle()
{
return $this->title;
}
function setTitle($value) {
$this->title = $value;
}
function getDescription() {
return $this->description;
}
function setDescription($value)
{
$this->description = $value;
}
function getPoints()
{
return $this->points;
}
function setPoints($value) {
$this->points = $value;
}
function getRanking()
{
return $this->ranking;
}
function setRanking($value)
{
$this->ranking = $value;
}
function calculateRanking()
{
$created = $this->getCreated();
$diff = $this->getTimeDifference($created, date('F d, Y h:i:s A'));
$time = $diff['days'] * 24;
$time += $diff['hours'];
$time += ($diff['minutes'] / 60);
$time += (($diff['seconds'] / 60)/60);
$base = ($time + 2);
if($base > 0)
{
$this->ranking = ($this->points - 1) / pow($base, 1.5);
}
else
{
$this->ranking = 0;
}
$this->save();
}
function vote($user,$amount=1)
{
if($this->has_voted($user) == false)
{
$this->points += $amount;
$this->save();
$this->log_vote($user);
}
}
function log_vote($user)
{
try
{
$db = parent::getConnection();
$query = "insert into votes (article_id, username) values ($this->id, '$user')";
$results = parent::execSql($query);
}
catch(Exception $e){
throw $e;
}
}
function has_voted($user)
{
try
{
$db = parent::getConnection();
$query = "select id from votes where username = '$user' and article_id = $this->id";
$results = parent::execSQL($query);
if($results->num_rows == 1) {
return true;
}
else
{
return false;
}
parent::closeConnection($db);
}
catch(Exception $e){
throw $e;
}
}
function getUrlDomain()
{
/* We extract the domain from the URL
* using the following regex pattern
*/
$url = $this->getUrl();
$matches = array();
if(preg_match('/http:\/\/(.+?)\//', $url, $matches))
{
return $matches[1];
}
else
{
return $url;
}
}
function getTimeDifference( $start, $end )
{
//echo "start is $start, end is $end";
$uts['start'] = strtotime( $start );
$uts['end'] = strtotime( $end );
if( $uts['start']!==-1 && $uts['end']!==-1 )
{
if( $uts['end'] >= $uts['start'] )
{
$diff = $uts['end'] - $uts['start'];
if( $days=intval((floor($diff/86400))) )
$diff = $diff % 86400;
if( $hours=intval((floor($diff/3600))) )
$diff = $diff % 3600;
if( $minutes=intval((floor($diff/60))) )
$diff = $diff % 60;
$diff = intval( $diff );
return( array('days'=>$days, 'hours'=>$hours, 'minutes'=>$minutes, 'seconds'=>$diff) );
}
else
{
echo( "Ending date/time is earlier than the start date/time");
}
}
else
{
echo( "Invalid date/time data detected");
}
return( false );
}
function getElapsedDateTime()
{
$db = null;
$record = null;
$record = Article::getById($this->id);
$created = $record->getCreated();
$diff = $this->getTimeDifference($created, date('F d, Y h:i:s A'));
//$diff = $this->getTimeDifference($created, date_add(date('F d, Y h:i:s A'),new DateInterval("5H")));
//echo 'new date is '.date('F d, Y h:i:s A');
//print_r($diff);
if($diff['days'] > 0 )
{
if($diff['days'] < 2 ) { return sprintf("%d dia", $diff['days']); }
else return sprintf("%d dias", $diff['days']);
}
else if($diff['hours'] > 0 )
{
if($diff['hours'] < 2 ) { return sprintf("%d hora", $diff['hours']); }
else return sprintf("%d horas", $diff['hours']);
}
else if($diff['minutes'] > 0 )
{
if($diff['minutes'] < 2 ) { return sprintf("%d minuto", $diff['minutes']); }
else return sprintf("%d minutos", $diff['minutes']);
}
else
{
if($diff['seconds'] < 2 ) { return sprintf("%d segundo", $diff['seconds']); }
else return sprintf("%d segundos", $diff['seconds']);
}
}
function save() {
/*
Here we do either a create or
update operation depending
on the value of the id field.
Zero means create, non-zero
update
*/
if(!get_magic_quotes_gpc())
{
$this->title = addslashes($this->title);
$this->description = addslashes($this->description);
}
try
{
$db = parent::getConnection();
if($this->id == 0 )
{
$query = 'insert into articles (modified, username, url, title, description, points )';
$query .= " values ('$this->getModified()', '$this->username', '$this->url', '$this->title', '$this->description', $this->points)";
createRSS(); // ++++++ rss +++++++
}
else if($this->id != 0)
{
$query = "update articles set modified = NOW()".", username = '$this->username', url = '$this->url', title = '".$this->title."', description = '".$this->description."', points = $this->points, ranking = $this->ranking where id = $this->id";
}
$lastid = parent::execSql2($query);
if($this->id == 0 )
$this->id = $lastid;
}
catch(Exception $e){
throw $e;
}
}
function delete()
{
try
{
$db = parent::getConnection();
if($this->id != 0)
{ ;
/*$comments = $this->getAllComments();
foreach($comments as $comment)
{
$comment->delete();
}*/
$this->deleteAllComments();
$query = "delete from articles where id = $this->id";
}
parent::execSql($query);
}
catch(Exception $e){
throw $e;
}
}
static function getAll($conditions = ' ')
{
/* Retrieve all the records from the
* database according subject to
* conditions
*/
$db = null;
$results = null;
$records = array();
$query = "select id, created, modified, username, url, title, description, points, ranking from articles $conditions";
try
{
$db = parent::getConnection();
$results = parent::execSql($query);
while($row = $results->fetch_assoc())
{
$r_id = $row['id'];
$r_created = $row['created'];
$r_modified = $row['modified'];
$r_title = $row['title'];
$r_description = $row['description'];
if(!get_magic_quotes_gpc())
{
$r_title = stripslashes($r_title);
$r_description = stripslashes($r_description);
}
$r_url = $row['url'];
$r_username = $row['username'];
$r_points = $row['points'];
$r_ranking = $row['ranking'];
$article = new Article($r_title, $r_description , $r_url, $r_username, $r_created, $r_modified);
$article->id = $r_id;
$article->points = $r_points;
$article->ranking = $r_ranking;
$records[] = $article;
}
parent::closeConnection($db);
}
catch(Exception $e)
{
throw $e;
}
return $records;
}
static function getById($id)
{/*
* Return one record from the database by its id */
$db = null;
$record = null;
try
{
$db = parent::getConnection();
$query = "select id, username, created, modified, title, url, description, points, ranking from articles where id = $id";
$results = parent::execSQL($query);
if(!$results) {
throw new Exception ('Record not found', EX_RECORD_NOT_FOUND);
}
$row = $results->fetch_assoc();
parent::closeConnection($db);
if(!get_magic_quotes_gpc())
{
$row['title'] = stripslashes($row['title']);
$row['description'] = stripslashes($row['description']);
}
$article = new Article($row['title'], $row['description'], $row['url'], $row['username'], $row['created'], $row['modified']);
$article->id = $row['id'];
$article->points = $row['points'];
$article->ranking = $row['ranking'];
return $article;
}
catch (Exception $e){
throw $e;
}
}
static function getNumberOfComments($id)
{/*
* Return one record from the database by its id */
$db = null;
$record = null;
try
{
$db = parent::getConnection();
$query = "select count(*) as 'total' from comments where article_id = $id";
$results = parent::execSQL($query);
if(!$results) {
throw new Exception ('Comments Count Query Query Failed', EX_QUERY_FAILED);
}
$row = $results->fetch_assoc();
$total = $row['total'];
parent::closeConnection($db);
return $total;
}
catch (Exception $e){
throw $e;
}
}
function deleteAllComments()
{/*
* Return one record from the database by its id */
$db = null;
try
{
$db = parent::getConnection();
$query = "delete from comments where article_id = $this->id";
$results = parent::execSQL($query);
if(!$results) {
throw new Exception ('Deletion Query Failed', EX_QUERY_FAILED);
}
parent::closeConnection($db);
}
catch (Exception $e){
throw $e;
}
}
function getAllComments($conditions = ' ')
{
/* Retrieve all the records from the
* database according subject to
* conditions
*/
$conditions = "where article_id = $this->id";
$comments = Comment::getAll($conditions);
return $comments;
}
static function getTestData($url)
{
$page = file_get_contents($url);
}
}
function createRSS()
{
$articles = Article::getAll("order by created desc limit $offset, $num_items");
$num_articles = count($articles);
// open a file pointer to an RSS file
$fp = fopen ("rss.xml", "w");
if (!$fp) {
// Can't write to a file
return;
}
fwrite ($fp, "<?xml version='1.0' encoding='iso-8859-1' ?>\n");
fwrite ($fp, "<rss version='2.0' xmlns:atom=\"http://www.kiubbo.com/rss.xml\"><channel>\n");
fwrite ($fp, "<title>Kiubbo.com</title>\n");
fwrite ($fp, "<atom:link href='http://www.kiubbo.com/rss.xml' rel='self' type='application/rss+xml' />\n");
fwrite ($fp, "<link>http://www.kiubbo.com/</link>\n");
fwrite ($fp, "<description>Todas las Noticias Fotos y Videos.</description>\n");
fwrite ($fp, "<language>es-mx</language>\n");
fwrite ($fp, "<docs>http://www.kiubbo.com/rss.xml</docs>\n");
fwrite ($fp, "<image>\n");
fwrite ($fp, " <title>Kiubbo.com</title>\n");
fwrite ($fp, " <url>http://www.kiubbo.com/Logot.png</url>\n");
fwrite ($fp, " <link>http://www.kiubbo.com</link>\n");
fwrite ($fp, "</image>\n");
for($index = 0; $index < $num_articles; $index++){
$url = $articles[$index]->getUrl();
$title = $articles[$index]->getTitle(); // ok?
$search = array(
'#<script[^>]*?>.*?</script>#si', // Strip out javascript
'#<[\/\!]*?[^<>]*?>#si', // Strip out HTML tags
'#([\r\n])[\s]+#', // Strip out white space
'#&(quot|#34);#i', // Replace HTML entities
'#&(amp|#38);#i',
'#&(lt|#60);#i',
'#&(gt|#62);#i',
'#&(nbsp|#160);#i',
'#&(iexcl|#161);#i',
'#&(cent|#162);#i',
'#&(pound|#163);#i',
'#&(copy|#169);#i',
'#&(acento|#0027);#i',
'#&#(\d+);#e'); // evaluate as php
$replace = array(
'',
'',
'\1',
'"',
'&',
'<',
'>',
' ',
'chr(161)',
'chr(162)',
'chr(163)',
'chr(169)',
'chr(\1)');
$content = preg_replace($search, $replace, $content);
$title = preg_replace("/&/", 'y', $title);
$content = preg_replace("/&/", 'y', $content);
fwrite ($fp, "<item>\n");
fwrite ($fp, " <title>$title</title>\n");
fwrite ($fp, " <link>$url</link>\n");
fwrite ($fp, "<guid>http://www.kiubbo.com</guid>\n");
fwrite ($fp, "</item>\n");
}
fwrite ($fp, "</channel></rss>\n");
fclose ($fp);
}
?>
Thx
Regards
Carlos

Answer 1

I'm not at a machine with php to test this, but you have queries with variables as follows...
"select id from votes where username = '$user' and article_id = $this->id"
I'm fairly certain that you need to bracket or concatenate when using objects...
"select id from votes where username = '$user' and article_id = ${this->id}"
or
"select id from votes where username = '$user' and article_id = " . $this->id