Daniel, thanks for help. Here is answer:
php script
$return = array();
while ($row = pg_fetch_array($result)) {
$return[] = array((int)$row[0],(int)$row[1]);
}
pg_close($db);
//var_dump($return);
echo $data=json_encode($return);
?>
Result is: [[6,4],[6,5],[7,6],[9,8],[5,9]]
and part of HTML code
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('number', 'ph');
data.addColumn('number', 'number');
var jsonData = $.ajax({
url: "getData2.php",
dataType: "json",
async: false
}).responseText;
var obj = JSON.parse(jsonData);
data.addRows(obj);
I am still having problems with format 'date', because I want to display
date on hAxis, JSON with date(as string) looks like:
[[6,"2017-11-05"],[6,"2017-10-30"],[7,"2017-10-29"],[9,"2017-10-28"],[5,"2017-10-27"]]
*How to format dates now in google charts?*
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