PHP influxdb - get measurement name in result - php

Question

I need to get some data out of my influxdb database.
My current query is:
SELECT value FROM first,second,third WHERE location = 'somewhere' ORDER BY time DESC LIMIT 1
With this result:
array(3) {
[0]=>
array(2) {
["time"]=>
string(30) "2020-02-06T12:44:49.461551353Z"
["value"]=>
float(8.7572979625)
}
[1]=>
array(2) {
["time"]=>
string(29) "2020-02-06T12:44:48.70683539Z"
["value"]=>
float(22.5172978864)
}
[2]=>
array(2) {
["time"]=>
string(30) "2020-02-06T12:44:48.711272393Z"
["value"]=>
float(43.0572978868)
}
}
To process this information i have to use a while loop of some sort, i am unsure since i cannot find an
example of this online anywhere related to this type of data.
But to make the loop useful i need to know what the measurement name is, if i dont have that the result is quite unusable.
I would require this to be:
array(3) {
[0]=>
array(2) {
["time"]=>
string(30) "2020-02-06T12:44:49.461551353Z"
["measurement"]=>
string(5) "first"
["value"]=>
float(8.7572979625)
}
[1]=>
array(2) {
["time"]=>
string(29) "2020-02-06T12:44:48.70683539Z"
["measurement"]=>
string(6) "second"
["value"]=>
float(22.5172978864)
}
[2]=>
array(2) {
["time"]=>
string(30) "2020-02-06T12:44:48.711272393Z"
["measurement"]=>
string(5) "third"
["value"]=>
float(43.0572978868)
}
}
How can i achieve this and process the results correctly?

Answer 1

This solved my issue:
<?php
include "vendor/autoload.php";
$columns = array('first', 'second', 'third');
$cstrings = implode(",",$columns);
$database = InfluxDB\Client::fromDSN(sprintf('influxdb://xxx:xxx#%s:%s/%s', 'localhost', 8086, 'xxxx'));
$client = $database->getClient();
$result = $database->query("SELECT value FROM $cstrings WHERE location = 'xxx' ORDER BY time DESC LIMIT 1");
foreach ($columns as $column) {
$points = $result->getPoints($column);
print($column." ".$points[0]['value']."\n");
}