Select one row from one table and multiple rows from other table - php

Question

I asked a little ago, but I find my question so bad, that it actually didn't help me do what I wanted, so I deleted it and tried again.
I have a table in my database called 'game' with the columns: k1, k1r, k2, k2r, k3, k3r, grp and week. The week-column is automatically inserted with the week of the year and the others are user-inputs from a betting game I made.
Then I have a table called 'matches' with the columns: match1, match2, match3, grp, week. Again, same procedure with the week-column. The other 4 I fill out with the matches we should bet on. The 'grp' column in both is filled by me with 'BS' and 'VF'.
I then have a query:
SELECT *
FROM game
WHERE week = '.$week.' AND grp = 'bs';
$week is already set as $week = Date('W');
It outputs a table, where I write the matches in 3 columns and then echoes the users bets in the rows under the matches. But instead of me changing the php-script every time there are new matches, I would like it to take them from the table 'matches'. In that way, I also keep the old matches in the database.
So, now to my question :)
What I would like to do is something like:
'SELECT * FROM game WHERE week = '.$week.' AND grp = 'bs'
JOIN * FROM matches WHERE week = '.$week.' AND grp = 'bs';
but as you probably now, that won't work :/
In my other question I forgot to mention the 'grp' column and couldn't figure out how to insert it.
To echo it I used:
while ($row = mysqli_fetch_array($query)) {
$no = 1;
$amount = $row['amount'] == 0 ? '' : number_format($row['amount']);
echo '<tr>
<td><strong>'.$row['name'].'</strong></td>
<td>'.$row['k1']."<br />".$row['k1r'].'</td>
<td>'.$row['k2']."<br />".$row['k2r'].'</td>
<td>'.$row['k3']."<br />".$row['k3r'].'</td> }
but I would like an outcome like this:
| |Match1 |Match2 |Match3 |
|User1 |2-0 |2-1 |2-2 |
|User2 |1-1 |2-2 |1-2 |
And so on ... where the 'Matches' are selected from the 'matches'-table and the bets are selected from the 'game'-table. So I just need the one row from 'Matches' as the headline and then loop through the rows in 'Game'.
The creates are:
CREATE TABLE `game`
(
`id` int(11) NOT NULL AUTO_INCREMENT,
`uid` int(11) DEFAULT NULL,
`user` varchar(20) COLLATE utf8_danish_ci DEFAULT NULL,
`name` varchar(50) COLLATE utf8_danish_ci DEFAULT NULL,
`k1` varchar(1) COLLATE utf8_danish_ci DEFAULT NULL,
`k1r` varchar(10) COLLATE utf8_danish_ci DEFAULT NULL,
`k2` varchar(1) COLLATE utf8_danish_ci DEFAULT NULL,
`k2r` varchar(10) COLLATE utf8_danish_ci DEFAULT NULL,
`k3` varchar(1) COLLATE utf8_danish_ci DEFAULT NULL,
`k3r` varchar(10) COLLATE utf8_danish_ci DEFAULT NULL,
`week` int(2) DEFAULT NULL,
`grp` varchar(11) COLLATE utf8_danish_ci DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `unique_index` (`uid`,`week`,`grp`)
) ENGINE=MyISAM AUTO_INCREMENT=32 DEFAULT CHARSET=utf8 COLLATE=utf8_danish_ci
And:
CREATE TABLE `udvalgte_kampe`
(
`hold1` varchar(50) COLLATE utf8_danish_ci DEFAULT NULL,
`hold2` varchar(50) COLLATE utf8_danish_ci DEFAULT NULL,
`hold3` varchar(50) COLLATE utf8_danish_ci DEFAULT NULL,
`hold4` varchar(50) COLLATE utf8_danish_ci DEFAULT NULL,
`hold5` varchar(50) COLLATE utf8_danish_ci DEFAULT NULL,
`hold6` varchar(50) COLLATE utf8_danish_ci DEFAULT NULL,
`week` int(2) DEFAULT NULL,
`grp` varchar(11) COLLATE utf8_danish_ci DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_danish_ci
But what should I do then?

Answer 1

Be aware for sql injection using $var and you can avoid string concatenation using proper quotes.
your second query the sintax for join is
is wrong youn should use this sintax
"SELECT * FROM game
JOIN matches on game.week = matches.week
where WHERE game.week = '$week' AND game.grp = 'bs'";
and not
'SELECT * FROM game WHERE week = '.$week.' AND grp = 'bs'
JOIN * FROM matches WHERE week = '.$week.' AND grp = 'bs';

Answer 2

If you use the SQL from the previous answer, I think this is roughly what you would need in your PHP :
$headerPrinted = $false;
while ($row = mysqli_fetch_array($query)) {
if (!headerPrinted) {
echo '<th>
<td></td>
<td>'.$row['hold1'].'</td>
<td>'.$row['hold2'].'</td>
<td>'.$row['hold3'].'</td>
</th>';
$headerPrinted = $true;
}
$no = 1;
$amount = $row['amount'] == 0 ? '' : number_format($row['amount']);
echo '<tr>
<td><strong>'.$row['name'].'</strong></td>
<td>'.$row['k1']."<br />".$row['k1r'].'</td>
<td>'.$row['k2']."<br />".$row['k2r'].'</td>
<td>'.$row['k3']."<br />".$row['k3r'].'</td>';
}
I'm making the assumption that hol1, hold2 and hold3 are the columns you want to use for your header.
I'm not saying this is the best way to achieve what you want, but it's probably good enough for your current level of experience.