PDO returning nothing

Question

So basically I've started working with OOP and the script I've wrote based on a tutorial is giving me 2 problems:

When i try to convert an object into a variable i'm getting this error:

Notice: Trying to get property of non-object in /home/stream/V2/templates/homepage.php on line 14

The code on line 14 is:

<a href=".action=viewSeries&amp;seriesId=<?php echo $series->id ?>"><?php echo htmlspecialchars( $series->id ) ?></a>

Second instead of turning the object into a variable and trying to access data directly from it i'm getting nothing.

I basically have 3 pages to help get data from a table:

Homepage.php

    <?php include( "templates/include/header.php" ); ?>

    <ul id="headlines">

    <?php
    echo $results['totalRows'];
    foreach( $results['series'] as $series ){ ?>

    <li>
    <h2>
    <!-- remember to add htmlspecialchars -->
    <span class="title"><?php echo $results['series']->description ?></span> 

    <a href=".action=viewSeries&amp;seriesId=<?php echo $series->id ?>"><?php echo htmlspecialchars( $series->id ) ?></a>
    </h2>
    </li>


    <?php 
    } ?>

    </ul>

    <p><a href="./?action=archive">Series Archive</a></p>
    <?php include( "templates/include/footer.php" ); ?>

index.php

    <?php

require( "core/config.php" );
$action = isset ( $_GET['action'] ) ? $_GET['action'] : "";

switch ( $action ){
    case 'series':
        series();
    break;

    case 'viewSeries':
        viewSeries();
    break;

    default:
        homepage();
}

function series(){
    $results = array();
    $data = Series::getList();
    $results['series'] = $data['results'];
    $results['totalRows'] = $data['totalRows'];
    $results['pageTitle'] = "Series Title";
    require( TEMPLATE_PATH . "/series.php" );
}   

function viewSeries(){
    if( !isset( $_GET['seriesId'] ) || !$_GET['seriesId'] ){
        homepage();
        return;
    }

    $results = array();
    $results['series'] = Series::getBydId( (int)$_GET['seriesId'] );
    $results['pageTitle'] = $results['series']->title . "| Sub title";
    require( TEMPLATE_PATH . "/viewSeries.php" );
}

function homepage(){
    $results = array();
    $data = Series::getList( HOMEPAGE_NUM_SERIES );
    $results['series'] = $data['results'];
    $results['totalRows'] = $data['totalRows'];
    $results['pageTitle'] = "Streamaton Homepage";
    require( TEMPLATE_PATH . "/homepage.php");
}

And this is the piece of code from the Series.php class:

    //Return all (or range of) Series objects in the db
public static function getList( $numRows=100000, $order="id DESC" ){
    $conn = new PDO( DB_DSN, DB_USERNAME, DB_PASSWORD );
    $sql = "SELECT id, description FROM series ORDER BY :order LIMIT :numRows";
    //SQL_CALC_FOUND_ROWS *
    $st = $conn->prepare( $sql );
    $st->bindValue( ":numRows", $numRows, PDO::PARAM_INT );
    $st->bindValue( ":order", $order, PDO::PARAM_STR );
    $st->execute();
    $list = array();

    while( $row = $st->fetch() ){
        $series = new Series( $row );
        $list = $series;    
    }


    //Now get the total number of series that match the criteria
    $sql = "SELECT FOUND_ROWS() AS totalRows";
    $totalRows = $conn->query( $sql )->fetch();
    $conn =  null;
    return ( array ( "results" => $list, "totalRows" => $totalRows[0] ) );

}

The whole series.php code looks like this: http://pastebin.com/f95A8NPr

Answer 1

This loop is wrong:

while( $row = $st->fetch() ){
    $series = new Series( $row );
    $list = $series;    
}

The last line should be:

    $list[] = $series;

so that it pushes each series onto the array. Your code is replacing the array with a series each time through the loop.