array (
0 =>
array (
0 => '2',
1 => '3g',
2 => '2011-10-17',
),
1 =>
array (
0 => '2',
1 => '6g',
2 => '2011-10-17',
),
2 =>
array (
0 => '3',
1 => 'yiruan',
2 => '2011-10-17',
),
3 =>
array (
0 => '3',
1 => 'yjm',
2 => '2011-10-17',
),
4 =>
array (
0 => '2',
1 => '3g',
2 => '2011-10-19',
),
5 =>
array (
0 => '2',
1 => '6g',
2 => '2011-10-19',
),
6 =>
array (
0 => '3',
1 => 'yiruan',
2 => '2011-10-19',
),
7 =>
array (
0 => '3',
1 => 'yjm',
2 => '2011-10-19',
),
) 这个数组转化成下面的数组array('2011-10-17' => array('3g'=>'2','6g'=>'2','yiruan'=>'3','yjm'=>'3'),
'2011-10-19' => array('3g'=>'2','6g'=>'2','yiruan'=>'3','yjm'=>'3')
)
$arr = array(
0 =>
array (
0 => '2',
1 => '3g',
2 => '2011-10-17',
),
1 =>
array (
0 => '2',
1 => '6g',
2 => '2011-10-17',
),
2 =>
array (
0 => '3',
1 => 'yiruan',
2 => '2011-10-17',
),
3 =>
array (
0 => '3',
1 => 'yjm',
2 => '2011-10-17',
),
4 =>
array (
0 => '2',
1 => '3g',
2 => '2011-10-19',
),
5 =>
array (
0 => '2',
1 => '6g',
2 => '2011-10-19',
),
6 =>
array (
0 => '3',
1 => 'yiruan',
2 => '2011-10-19',
),
7 =>
array (
0 => '3',
1 => 'yjm',
2 => '2011-10-19',
),
);$rest = array();
foreach($arr as $v){
$rest[$v[2]][$v[1]] = $v[0]; }
print_r($rest);