javascript - Live realtime graph with Highstock, PHP and Mysql -

i working on web app , have no idea on how this, using highstock static charts, retrieve temperatures mysql database, , using php class myself designed send data through use of json javascript. know trying it's possible, there's jsfiddle example (http://jsfiddle.net/ovhb3jp1/) in highcharts webpage graphs random js generated data.

my guess have make js script retrieves temperatures php script , sends highstock script graphs, correct? how write such script? know lot of php , mysql, knowledge of js pretty vague, apreciated.

this existing js script

<script> $(function () {     $('#container').highcharts('stockchart', <?php echo $chart; ?>); }); </script> 

this part of class generates json $chart variable

function __tostring(){     $this->datos();     return json_encode($this->hs); } 

the hs attribute of class array loaded parameters of highstock api, through above php code converted json , put above js script.

thanks!