I've never used mysqli_multi_query before and it's boggling my brain, any examples I find on the net aren't helping me to figure out exactly what it is I want to do.
Here is my code:
<?php
$link = mysqli_connect("server", "user", "pass", "db");
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$agentsquery = "CREATE TEMPORARY TABLE LeaderBoard (
`agent_name` varchar(20) NOT NULL,
`job_number` int(5) NOT NULL,
`job_value` decimal(3,1) NOT NULL,
`points_value` decimal(8,2) NOT NULL
);";
$agentsquery .= "INSERT INTO LeaderBoard (`agent_name`, `job_number`, `job_value`, `points_value`) SELECT agent_name, job_number, job_value, points_value FROM jobs WHERE YEAR(booked_date) = $current_year && WEEKOFYEAR(booked_date) = $weeknum;";
$agentsquery .= "INSERT INTO LeaderBoard (`agent_name`) SELECT DISTINCT agent_name FROM apps WHERE YEAR(booked_date) = $current_year && WEEKOFYEAR(booked_date) = $weeknum;";
$agentsquery .= "SELECT agent_name, SUM(job_value), SUM(points_value) FROM leaderboard GROUP BY agent_name ORDER BY SUM(points_value) DESC";
$i = 0;
$agentsresult = mysqli_multi_query($link, $agentsquery);
while ($row = mysqli_fetch_array($agentsresult)){
$number_of_apps = getAgentAppsWeek($row['agent_name'],$weeknum,$current_year);
$i++;
?>
<tr class="tr<?php echo ($i & 1) ?>">
<td style="font-weight: bold;"><?php echo $row['agent_name'] ?></td>
<td><?php echo $row['SUM(job_value)'] ?></td>
<td><?php echo $row['SUM(points_value)'] ?></td>
<td><?php echo $number_of_apps; ?></td>
</tr>
<?php
}
?>
All I'm trying to do is run a multiple query and then use the final results from those 4 queries and put them into my tables.
the code above really doesn't work at all, I just get the following error:
Warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result, boolean given in C:\xampp\htdocs\hydroboard\hydro_reporting_2010.php on line 391
any help?
From the manual: mysqli_multi_query()
returns a bool
indicating success.
To retrieve the resultset from the first query you can use mysqli_use_result() or mysqli_store_result(). All subsequent query results can be processed using mysqli_more_results() and mysqli_next_result().
Here is a function that returns the last result of a multi-query:
function mysqli_last_result($link) {
while (mysqli_more_results($link)) {
mysqli_use_result($link);
mysqli_next_result($link);
}
return mysqli_store_result($link);
}
Usage:
$link = mysqli_connect();
$query = "SELECT 1;";
$query .= "SELECT 2;";
$query .= "SELECT 3";
mysqli_multi_query($link, $query);
$result = mysqli_last_result($link);
$row = $result->fetch_row();
echo $row[0]; // prints "3"
$result->free();
mysqli_close($link);