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<?php $resultset = [ ["id" => "1", "cityId" => "1", "cityName" => "Bengaluru", "runId" => "2", "distance" => "10k", "status" => "1"], ["id" => "2", "cityId" => "1", "cityName" => "Bengaluru", "runId" => "1", "distance" => "5k", "status" => "1"], ["id" => "3", "cityId" => "1", "cityName" => "Bengaluru", "runId" => "5", "distance" => "3k", "status" => "0"], ["id" => "4", "cityId" => "2", "cityName" => "Chennai", "runId" => "1", "distance" => "5k", "status" => "1"], ["id" => "5", "cityId" => "2", "cityName" => "Chennai", "runId" => "2", "distance" => "10k", "status" => "1"], ["id" => "6", "cityId" => "2", "cityName" => "Chennai", "runId" => "4", "distance" => "15k", "status" => "1"] ]; foreach ($resultset as $row) { if (!isset($result[$row["cityId"]])) { $result[$row["cityId"]] = array("cityId" => $row["cityId"], $row["cityName"] => array(array("id" => $row["id"])+array_slice($row,-3))); } else { $result[$row['cityId']][$row["cityName"]][] = array("id" => $row["id"])+array_slice($row,-3); } } $result = array("status" => true, "runsBasedOnCity" => array_values($result)); var_export(json_encode($result, JSON_PRETTY_PRINT));
Output for git.master, git.master_jit, rfc.property-hooks
'{ "status": true, "runsBasedOnCity": [ { "cityId": "1", "Bengaluru": [ { "id": "1", "runId": "2", "distance": "10k", "status": "1" }, { "id": "2", "runId": "1", "distance": "5k", "status": "1" }, { "id": "3", "runId": "5", "distance": "3k", "status": "0" } ] }, { "cityId": "2", "Chennai": [ { "id": "4", "runId": "1", "distance": "5k", "status": "1" }, { "id": "5", "runId": "2", "distance": "10k", "status": "1" }, { "id": "6", "runId": "4", "distance": "15k", "status": "1" } ] } ] }'

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