I have a SQLite database and am trying to graph data on a linechart using Highcharts, PHP, and Javascript. I am graphing one series per user (a user being a text value per tuple), but am running into trouble with retrieving a subsequent user via a PHP loop.
$dbhandle = sqlite_open('db/test.db', 0666, $error);
if (!$dbhandle) die ($error);
$query5 = "SELECT DISTINCT User FROM Events";
$ok0 = sqlite_query($dbhandle, $query5, $error_msg);
if (!$ok0)
{
die("dead" . $error_msg);
}
$rows = sqlite_num_rows($ok0);
echo
"for(var i=2; i<$rows; i++) // start of JS loop.
//$rows is 4; I am graphing 2 series here
{";
$array = sqlite_fetch_array($ok0, SQLITE_ASSOC); // $ok0 is the unique list
// of users. After graphing one series, I want to grab the next user to graph
echo "chart.addSeries({
name: '{$array["User"]}',
data: [";
for($i=0; $i<$diff+1; $i++)
{
$target = date("D, j M", (strtotime($_GET["start"]) + $i * 24 * 3600));
$query6 = "SELECT * FROM Events WHERE User = '{$array["User"]}' AND Start LIKE '%{$target}%'";
$result6 = sqlite_query($dbhandle, $query6);
if (!$result6) die("Cannot execute query.");
$num = sqlite_num_rows($result6);
if($i==($diff))
{
echo $num;
}
else
echo $num . ", ";
}?>],
pointStart:
<?php
$date = DateTime::createFromFormat('D M d Y', urldecode($_GET["start"]));
echo $date->getTimestamp()*1000;?>,
pointInterval: 24 * 3600 * 1000 // one day
});
<?php echo "}";?> // end of JS loop
The result does graph two additional series, but they are both the same data from the same user. It doesn't look like the loop with sqlite_fetch_array() correctly returns the next user. Can anyone see the problem here? Maybe something with the way I'm integrating Javascript with PHP?