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$arr = array(
Array('101-1148713','-68500','高岩'),
Array('101-1148713','-1464.6','高岩'),
Array('101-1148712','11','高岩'),
Array('101-1148713','98500','高岩'),
Array('101-1177035','-11068.4','全玮')
);
foreach($arr as $v) {
$res[$v[2]][$v[0]][] = $v[1];
}
print_r($res);Array
(
[高岩] => Array
(
[101-1148713] => Array
(
[0] => -68500
[1] => -1464.6
[2] => 98500
)
[101-1148712] => Array
(
[0] => 11
)
)
[全玮] => Array
(
[101-1177035] => Array
(
[0] => -11068.4
)
)
)