json_encode into object with no value

json_encode into object with no value

What do I have to put in to get an object with 1 property, but undefined value?

What do I have to put in to get an object with 1 property, but undefined value?

Like so:

$data = 'test';
$object = new stdClass;
$object->$data = null;

gives JSON output of


but what I'd like to have is


php json typescript

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