Using Wp_Query, Json to add Highcharts series data

by

If it’s just a simple tweak to the output string then just use str_replace.

$averagePricejson = "[[0,0],[1,39000],[2,62500],[3,80000]]";

$averagePricejson = str_replace( "]]", "],]", $averagePricejson);

echo $averagePricejson; // [[0,0],[1,39000],[2,62500],[3,80000],]