Sorting php array in Redis -

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i have array of objects (result of mysql query) 

    array(28) {   [0]=>   array(2) {     ["member_id"]=>     string(5) "40105"     ["last_login"]=>     string(19) "2014-02-18 06:04:06"   }   [1]=>   array(2) {     ["member_id"]=>     string(5) "51758"     ["last_login"]=>     string(19) "2014-04-21 09:29:11"   }   [2]=>   array(2) {     ["member_id"]=>     string(5) "52682"     ["last_login"]=>     string(19) "2014-04-21 08:27:00"   }

what best datatype sort in redis ? need search , add object result?

shall use set or list ?


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