Using PHP variable on mysql_query line
Ok guys. I have a somewhat tricky problem passing PHP variables to a mysql_query string.
$ _GET ['date']; when passed will contain something like: 2015_01_07_1
I need GET data to be passed to table names using $ week variables.
<?php
$week= $_GET['date'];
$con=mysqli_connect("localhost","root","mypassword","beerhandpoker");
// Check connection
if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$result = mysqli_query
($con,
"SELECT games_brixx_gastonia_'$week'.rank, players_brixx_gastonia.name, games_brixx_gastonia_'$week'.points
FROM games_brixx_gastonia_'$week', players_brixx_gastonia
WHERE games_brixx_gastonia_'$week'.email = players.email
ORDER BY games_brixx_gastonia_'$week'.rank
LIMIT 20"
);
echo "<table>
<tr>
<th>Rank</th>
<th>Name</th>
<th>Points</th>
</tr>";
while($row = mysqli_fetch_array($result)) {
echo "<tr>";
echo "<td>" . $row['rank'] . "</td>";
echo "<td>" . $row['name'] . "</td>";
echo "<td>" . $row['points'] . "</td>";
echo "</tr>";
}
echo "</table>";
mysqli_close($con);
?>
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3 answers
Change your string literal to:
"SELECT games_brixx_gastonia_$week.rank,
players_brixx_gastonia.name,games_brixx_gastonia_$week.points
FROM games_brixx_gastonia_$week, players_brixx_gastonia
WHERE games_brixx_gastonia_$week.email = players_brixx_gastonia.email
ORDER BY games_brixx_gastonia_$week.rank
LIMIT 20"
You need to remove characters '
; This will db likegames_brixx_gastonia_'2015_01_07_1'.rank
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Why are you adding single quotes? It should work:
SELECT games_brixx_gastonia_{$week}.rank, players_brixx_gastonia.name, games_brixx_gastonia_{$week}.points
FROM games_brixx_gastonia_{$week}, players_brixx_gastonia
WHERE games_brixx_gastonia_{$week}.email = players.email
ORDER BY games_brixx_gastonia_{$week}.rank
LIMIT 20
Anyway, I'd rather you use an instruction instead. Check it out: http://php.net/manual/pt_BR/mysqli.prepare.php
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