PHP comes with a JSON extension. The only thing you will need to figure out is how you have to create the data in PHP. []
in JSON is an array, {}
is a dictionary. For the part mentioned you’ll need something like this:
$foo = array(
array(
'c' => array(
array('v' => 'date3'),
array('v' => 52)
)
),
array(
'c' => array(
array('v' => 'date4'),
array('v' => 32)
)
),
// and so on...
);
solved Creating json data with duplicate keys [closed]