mysql_fetch_assoc to echo linked table results with php - php

Question

Using php, I am trying to link results from 3 tables that are connected by a same value. I would then like each dynamic set of related results to repeat as a while loop on the page. This is the result I would like:
artist->
series1->piece1, piece2
series2->piece3, piece4
Artists and series tables share a matched column named 'artist'. Series and piece table have a matched column name 'series'. I know these tables are linked through this same matched value in the database as on another page cascade delete is working.
Currently it only shows the series as an echo repeat loop but with no artist or piece related on either side. Like so: http://www.exhibitjewellery.com/artistindex.php
Whether a mysql_fetch_assoc is the right way, I am not sure. I am confused as to whether the tables are linking correctly at all or if the problem is how I have divided the body section for formatting. I have a feeling a multidimensional array may help or even nesting the tables but I haven't quite grasped how all the details combine throughout each section of the code. Please help!
PHP above the head:
<?php
mysql_select_db($database_connectmysql, $connectmysql);
$query_artistrecordset = "SELECT * FROM artists ORDER BY artist ASC";
$artistrecordset = mysql_query($query_artistrecordset, $connectmysql) or die(mysql_error());
$row_artistrecordset = mysql_fetch_assoc($artistrecordset);
$totalRows_artistrecordset = mysql_num_rows($artistrecordset);
mysql_select_db($database_connectmysql, $connectmysql);
$query_seriesrecordset = "SELECT * FROM series, artists WHERE series.artist=artists.artist ORDER BY exhibition ASC";
$seriesrecordset = mysql_query($query_seriesrecordset, $connectmysql) or die(mysql_error());
$resultseries = mysql_query($query_seriesrecordset);
$row_seriesrecordset = mysql_fetch_assoc($resultseries);
$totalRows_seriesrecordset = mysql_num_rows($seriesrecordset);
mysql_select_db($database_connectmysql, $connectmysql);
$query_piecerecordset = "SELECT * FROM pieces,series WHERE pieces.piece=series.series ORDER BY piece ASC";
$piecerecordset = mysql_query($query_piecerecordset, $connectmysql) or die(mysql_error());
$resultpiece = mysql_query($query_piecerecordset);
$row_piecerecordset = mysql_fetch_assoc($resultpiece);
$totalRows_piecerecordset = mysql_num_rows($piecerecordset);
?>
This is how I have tried to echo it in the body:
<div id="serieslist" align="right">
<?php echo $row_artistrecordset['artist']; ?><br />
<?php echo $row_artistrecordset['website']; ?><br />
<?php echo $row_artistrecordset['artist_statement']; ?><br />
<?php do { ?>
<?php echo $row_seriesrecordset['series']; ?><br />
<?php echo $row_seriesrecordset['exhibition']; ?><br />
<?php echo $row_seriesrecordset['series_statement']; ?><br />
<?php do { ?>
<?php echo $row_piecerecordset['piece']; ?><br />
<?php echo $row_piecerecordset['description']; ?><br />
<?php echo $row_piecerecordset['category']; ?><br />
<?php echo $row_piecerecordset['dimensions']; ?><br />
<?php echo $row_piecerecordset['price']; ?><br />
add to collection button<br />
<?php } while ($row_piecerecordset = mysql_fetch_assoc($resultpiece)); ?>
<?php } while ($row_seriesrecordset = mysql_fetch_assoc($resultseries)); ?>
</div>
</body>
</html>
<?php
mysql_free_result($artistrecordset);
mysql_free_result($seriesrecordset);
mysql_free_result($piecerecordset);
?>
Any help would be greatly appreciated as I have been working on this for days!

Answer 1

Working from your code, here's a version converted to mysqli, with some of the redundant lines removed. I haven't been able to test this, so a little debugging might be required.
<?php
$connectmysql = mysqli_connect("dbhost","dbuser","dbname","dbname") or die("Database error:".mysqli_connect_error);
$query_artistrecordset = "SELECT * FROM artists ORDER BY artist ASC";
$artistrecordset = mysqli_query($connectmysql, $query_artistrecordset) or die(mysqli_error);
$query_seriesrecordset = "SELECT * FROM series, artists WHERE series.artist=artists.artist ORDER BY exhibition ASC";
$seriesrecordset = mysqli_query($connectmysql, $query_seriesrecordset ) or die(mysqli_error);
$query_piecerecordset = "SELECT * FROM pieces,series WHERE pieces.piece=series.series ORDER BY piece ASC";
$piecerecordset = mysqli_query($connectmysql, $query_piecerecordset) or die(mysqli_error);
echo "<div id="serieslist" align="right">"
while ($row_artistrecordset = mysqli_fetch_assoc($artistrecordset)) {
echo $row_artistrecordset['artist'],"<br>";
echo $row_artistrecordset['website'],"<br>";
echo $row_artistrecordset['artist_statement'],"<br>";
while ($row_seriesrecordset = mysqli_fetch_assoc($seriesrecordset)) {
echo $row_seriesrecordset['series'],"<br>";
echo $row_seriesrecordset['exhibition'],"<br>";
echo $row_seriesrecordset['series_statement'],"<br>";
while ($row_piecerecordset = mysqli_fetch_assoc($piecerecordset)) {
echo $row_piecerecordset['piece'],"<br>";
echo $row_piecerecordset['description'],"<br>";
echo $row_piecerecordset['category'],"<br>";
echo $row_piecerecordset['dimensions'],"<br>";
echo $row_piecerecordset['price'],"<br>";
echo "add to collection button<br />";
} // end of pieces
} // end of series
} //end of artists
mysqli_free_result($artistrecordset);
mysqli_free_result($seriesrecordset);
mysqli_free_result($piecerecordset);
echo "</div>";
?>
</body>
</html>

Answer 2

Firs I recommend you use object oriented PHP. Keep this on a separate, secure page called db.php, or something:
//db.php
<?php
function db(){
return new mysqli('replaceWithHostName', 'relaceWithUserName', 'replaceWithPassWord', 'replaceWithDatebaseName');
}
?>
Now for your other page:
//other.php
<?php
include('db.php'); $db = db(); $nr = 'No Results Were Found'; $od = '<div>'; $cd = '</div>'; $br = '<br />'; $ar = $sr = $pr = '';
$artistrecordset = $db->query('SELECT * FROM artists ORDER BY artist ASC');
if(!$artistrecordset)die($db->error);
if($artistrecordset->num_rows > 0){
while($row_ar = $artistrecordset->fetch_assoc()){
$ar .= $od.$row_ar['artist'].$br.$row_ar['website'].$br.$row_ar['artist_statement'].$cd;
}
$artistrecordset->free();
}
else){
die($nr);
}
$seriesrecordset = $db->query('SELECT * FROM series, artists WHERE series.artist=artists.artist ORDER BY exhibition ASC');
if(!$seriesrecordset)die($db->error);
if($seriesrecordset->num_rows > 0){
while($row_sr = $seriesrecordset->fetch_assoc()){
$sr .= $od.$row_sr['series'].$br.$row_sr['exhibition'].$br.$row_sr['series_statement'].$cd;
}
$seriesrecordset->free();
}
else){
die($nr);
}
$piecerecordset = $db->query('SELECT * FROM pieces,series WHERE pieces.piece=series.series ORDER BY piece ASC');
if(!$piecerecordset)die($db->error);
if($piecerecordset->num_rows > 0){
while($row_pr = $piecerecordset->fetch_assoc()){
$pr .= $od.$row_pr['piece'].$br.$row_pr['description'].$br.$row_pr['category'].$br.$row_pr['dimensions'].$br.$row_pr['price'].$cd;
}
$piecerecordset->free();
}
else){
die($nr);
}
$db->close();
$head = '<html><head></head><body>'; //this could be your other info
echo "$head<div id='serieslist' align='right'>$ar$sr$pr$cd".
"<script type='text/javascript'>/*you should put your JavaScript here*/</script>".
'</body></html>';
?>
Really, you should use an external src for your JavaScript so it's cached. Sorry, if the format is hard to read. Use the scrollbars.

Answer 3

You missed to write while loop for $row_artistrecordset as you did also for others, see your code there are only two loops.

Answer 4

First try this query in something like phpMyAdmin to see if it gets the result you want.
SELECT *
FROM artists a
JOIN series s ON s.artist = a.artist
JOIN pieces p ON p.series = s.series
ORDER BY a.artist;
Then process the single result like this.
mysql_select_db($database_connectmysql, $connectmysql);
$q = "SELECT * FROM artists a
JOIN series s ON s.artist = a.artist
JOIN pieces p ON p.series = s.series
ORDER BY a.artist";
$result = mysql_query($q, $connectmysql) or die(mysql_error());
foreach ( $row = mysql_fetch_assoc($result) ) {
echo $row['artist'] . '<br />';
echo $row['website'] . '<br />';
echo $row['artist_statement'] . '<br />';
echo $row['series'] . '<br />';
echo $row['exhibition'] . '<br />';
echo $row['series_statement'] . '<br />';
echo $row['piece'] . '<br />';
echo $row['description'] . '<br />';
echo $row['category'] . '<br />';
echo $row['dimensions'] . '<br />';
echo $row['price'] . '<br />';
echo ' add to collection button<br />';
}
Ok you should also use mysqli or PDO as the mysql extension is now deprecated, but without changing everything and its not a like for like just add a i conversion, you could try this as an interim solution.