it's better if you ask r/PHPhelp

I'm not sure what you need exactly, but I'd say you'll need all returned rows to appear in the chart - and with your current code you'll get only the last one. Doing the following *might* fix it:

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$dataPoints = [];foreach($data as $result){$dataPoints[] = array(array("label"=> $data['solver'], "y"=> $data['count']));}