[Solved]-Highcharts: X axis, MySQL datetime-Highcharts

you are setting categories, which isn't datetime type for xaxis. remove them, then concat time and temp arrays.

for example:

var concatenateddata = [];
$.each(time, function(i, e){
        concatenateddata.push([parseint(e), temp[i]]);
});

demo: http://jsfiddle.net/sjl6f/1/

note: i have added parseint, because highcharts requires timestamps to be numbers, not strings.