БД содержит записи в стиле:
Array ( [id] => 1 [data] => 03.03.15 09:28:46 [latitude] => 49.23342514 [longitude] => 28.40869522 [ppm] => ppm= )
Array ( [id] => 2 [data] => 03.03.15 09:28:46 [latitude] => 49.23342514 [longitude] => 28.40869522 [ppm] => 701 )
Array ( [id] => 3 [data] => 03.03.15 09:28:47 [latitude] => 49.23335648 [longitude] => 28.40859604 [ppm] => ppm )
Array ( [id] => 4 [data] => 03.03.15 09:28:47 [latitude] => 49.23335648 [longitude] => 28.40859604 [ppm] => =679 )
Array ( [id] => 5 [data] => 03.03.15 09:28:48 [latitude] => 49.23325729 [longitude] => 28.40863609 [ppm] => pp )
Array ( [id] => 6 [data] => 03.03.15 09:28:48 [latitude] => 49.23325729 [longitude] => 28.40863609 [ppm] => m=65 )
Array ( [id] => 7 [data] => 03.03.15 09:28:48 [latitude] => 49.23325729 [longitude] => 28.40863609 [ppm] => 6 )
На выходе нужно получить такое:
Array ( [id] => 1 [data] => 03.03.15 09:28:46 [latitude] => 49.23342514 [longitude] => 28.40869522 [ppm] => ppm=701 )
Array ( [id] => 3 [data] => 03.03.15 09:28:47 [latitude] => 49.23335648 [longitude] => 28.40859604 [ppm] => ppm=679)
Array ( [id] => 5 [data] => 03.03.15 09:28:48 [latitude] => 49.23325729 [longitude] => 28.40863609 [ppm] => ppm=656 )
т.е. объеденить то, что находится в столбце ppm по общему столбцу data
как это реализовать? не могу придумать