3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = ['a', 'b', 'c']; echo json_encode($data), "\n"; echo json_encode($data, JSON_OBJECT_AS_ARRAY), "\n"; echo json_encode($data, JSON_OBJECT_AS_ARRAY | JSON_FORCE_OBJECT), "\n"; echo json_encode($data, JSON_FORCE_OBJECT), "\n";

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39.36 ms | 404 KiB | 5 Q