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<?php $arr = array( "2_1"=>"1", "2_2"=>"2", "2_3"=>"3" ); $arrr = array( "1_1"=>"_1", "1_2"=>$arr, "1_3"=>"Hello there!" ); echo json_encode( $arrr ) ?>
Output for git.master, git.master_jit, rfc.property-hooks
{"1_1":"_1","1_2":{"2_1":"1","2_2":"2","2_3":"3"},"1_3":"Hello there!"}

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