php - Format content of array (to match Highcharts requirements) -


i have php array created simple xml object , looks following example (hard-coded demoing): 

$arr = array("item1"=>"53","item2"=>"20","item3"=>"7","item4"=>"4","item4"=>"2","item6"=>"2","item7"=>"1");

i use array create chart using highcharts requires different format (see below). how can convert content of array match format ?

[['item1',53],['item2',20],['item3',7],['item4',4],['item5',2],['item6',2],['item7',1]]

many this, mike.

just try with:

$output = json_encode(array_map(function($key, $value){     return array($key, (int) $value); }, array_keys($arr), array_values($arr)));

output:

string '[["item1",53],["item2",20],["item3",7],["item4",2],["item6",2],["item7",1]]' (length=75)

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