get_latest_data.php

<?php
$user = 'root';
$password = 'root';
$db = 'tuneocracy';
$host = 'localhost';
$port = 3306;

$link = mysqli_init();
$success = mysqli_real_connect(
   $link, 
   $host, 
   $user, 
   $password, 
   $db,
   $port
);

$query = "SELECT sum(COALESCE(votes.`vote_value`,0)) as total_votes, currentPlaylist.`song_id`, currentPlaylist.`name`, currentPlaylist.`artist`, currentPlaylist.`playback_timestamp`
FROM `currentPlaylist`
LEFT JOIN `votes` on currentPlaylist.`song_id` = votes.`song_id`
WHERE `playback_timestamp` is not NULL
GROUP BY `song_id`
ORDER BY  `playback_timestamp` ASC";

$results = mysqli_query($link, $query);

?>

Previous Songs:
<table id="playedSongTable">
<thead>
<tr>
<th>Vote Total</th><th>Title</th><th>Artist</th><th>Playback Time</th>
</tr>
</thead>
<tbody>
<?php
$last_song_num = $results->num_rows;
$i = 1;

while($row = mysqli_fetch_array($results))
{
  echo "<tr><td>"; 
  if ($i == $last_song_num)
  {
    echo "Now Playing";
  }  
  else
  {
   echo $row['total_votes'];
  }
  echo "</td><td>";   
  echo $row['name'];
  echo "</td><td>";    
  echo $row['artist'];
  echo "</td><td>";
  echo $row['playback_timestamp'];
  echo "</td></tr>\n"; 
  $i++; 
}
?>
<tbody>
</table>
<br>
Vote on Upcoming Songs:
<?php
$query = "SELECT sum(COALESCE(votes.`vote_value`,0)) as total_votes, currentPlaylist.`song_id`, currentPlaylist.`name`, currentPlaylist.`artist`, currentPlaylist.`playback_timestamp`
FROM `currentPlaylist`
LEFT JOIN `votes` on currentPlaylist.`song_id` = votes.`song_id`
WHERE `playback_timestamp` is NULL
GROUP BY `song_id`
ORDER BY  `total_votes` DESC";

$results = mysqli_query($link, $query);
$song_count = $results->num_rows;
?>

<table id="unplayedSongTable">
<thead>
<tr>
<th>Vote Total</th><th>Title</th><th>Artist</th>
</tr>
</thead>
<tbody>
<?php
//display all data from db in table form
while($row = mysqli_fetch_array($results))
{
  $upvote_id = "upvote_" . $row['song_id'];
  $downvote_id = "downvote_" . $row['song_id'];
  echo "<tr><td><div class='center'><img src='images/upvote_sm.png' alt='upvote' height='24' width='24' class='votebutton' id='$upvote_id'><br>"; 
  echo $row['total_votes'];
  echo "<br><img src='images/downvote_sm.png' alt='downvote' height='24' width='24' class='votebutton' id='$downvote_id'></div></td><td>";   
  echo $row['name'];
  echo "</td><td>";    
  echo $row['artist'];
  echo "</td></tr>\n";  
}
$link->close();
?>
<tbody>
</table>