How to parse Hypertable data using php
===

I have inserted data's in Hypertable. But i don't know, how to get particular value from result. My PHP thrift code is : 

		$GLOBALS['THRIFT_ROOT'] = "/opt/hypertable/0.9.5.6/lib/php";
		
		require_once $GLOBALS['THRIFT_ROOT'].'/ThriftClient.php';
		
		$client = new Hypertable_ThriftClient("localhost", 38080);

		$namespace = $client->namespace_open("appuniv");
		
		$query = "select * from category_details limit 1";

		$tab = $client->hql_query($namespace, $query);

		var_dump($tab);

I'm getting the below result : 

> object(Hypertable_ThriftGen_HqlResult)#24 (4) { ["results"]=> NULL
> ["cells"]=> array(2) { [0]=> object(Hypertable_ThriftGen_Cell)#25 (2)
> { ["key"]=> object(Hypertable_ThriftGen_Key)#26 (6) { ["row"]=>
> string(32) "077262cc53a1fb1b5f651d31b6bf81ba" ["column_family"]=>
> string(8) "category" ["column_qualifier"]=> string(4) "name"
> ["timestamp"]=> float(1.3419935154984E+18) ["revision"]=>
> float(1.3419935154984E+18) ["flag"]=> int(255) } ["value"]=> string(7)
> "Medical" } [1]=> object(Hypertable_ThriftGen_Cell)#27 (2) { ["key"]=>
> object(Hypertable_ThriftGen_Key)#28 (6) { ["row"]=> string(32)
> "077262cc53a1fb1b5f651d31b6bf81ba" ["column_family"]=> string(8)
> "category" ["column_qualifier"]=> string(4) "type" ["timestamp"]=>
> float(1.3419935154984E+18) ["revision"]=> float(1.3419935154984E+18)
> ["flag"]=> int(255) } ["value"]=> string(7) "android" } }
> ["scanner"]=> NULL ["mutator"]=> NULL } 0.9678

May i know how to get the **["value"]=> string(7) "Medical"** value from above result.