[英]Unset an multidimensional array by key
$series = array();
while($row = mysql_fetch_assoc($result)) {
$series[$row["data_id"]][] = $row;
}
The output from a print_r
on $series
yields for two example series: $series
上print_r
的输出产生两个示例系列:
Array ( 阵列(
[1] => Array ( [0] => Array ( [id] => 1 [data_id] => 1 [time_id] => 1 [data] => 1 ) [1] => Array ( [id] => 2 [data_id] => 1 [time_id] => 2 [data] => 3 ) ) [1] =>数组([0] =>数组([id] => 1 [data_id] => 1 [time_id] => 1 [数据] => 1)[1] =>数组([id] = > 2 [data_id] => 1 [time_id] => 2 [数据] => 3))
[2] => Array ( [0] => Array ( [id] => 6 [data_id] => 2 [time_id] => 1 [data] => 7 ) [1] => Array ( [id] => 7 [data_id] => 2 [time_id] => 2 [data] => 4 ) ) [2] =>数组([0] =>数组([id] => 6 [data_id] => 2 [time_id] => 1 [数据] => 7)[1] =>数组([id] = > 7 [data_id] => 2 [time_id] => 2 [数据] => 4))
My question: how do I unset the multidimensional array so it contains only [data] and none of the other keys? 我的问题:如何取消设置多维数组,使其仅包含[data]而不包含其他任何键? I still want $series
to contain [1]
and [2]
but I do not want the respective sub-arrays to contain any other keys other than [data]
. 我仍然希望$series
包含[1]
和[2]
但我不希望各个子数组包含[data]
以外的任何其他键。
In fact, since I am reducing the subarrays to contain a single key, I would really like to get rid of the subarrays altogether so that I have two arrays: 事实上,由于我正在减少子数组以包含单个键,我真的想完全摆脱子数组,以便我有两个数组:
$series[1] = array(1,3) and $series[2] = array(7,4) $ series [1] = array(1,3)和$ series [2] = array(7,4)
Try this : 尝试这个 :
$series = array();
while($row = mysql_fetch_assoc($result)) {
$series[$row["data_id"]][] = $row['data'];
}
I think you can loop in your array and build a new one keeping only data
details 我认为你可以在你的数组中循环并构建一个只保留data
细节的新数组
$array = array ('1' => array ( '0' => array ( 'id' => 1, 'data_id' => 1, 'time_id' => 1, 'data' => 1 ), '1' => array ( 'id' => 2, 'data_id' => 1, 'time_id' => 2, 'data' => 3 ), ),
'2' => array ( '0' => array ( 'id' => 6, 'data_id' => 2, 'time_id' => 1, 'data' => 7 ), '1' => array ( 'id' => 7, 'data_id' => 2, 'time_id' => 2, 'data' => 4 ) ));
$i= 0;
$n= 0;
$series = array();
foreach($array as $dato)
{
$series[$i] = array();
foreach($dato as $data)
{
foreach($data as $key => $value)
{
if($key == 'data')
{
$series[$i][$n] = $value;
$n++;
}
}
}
$n = 0;
$i++;
}
var_dump($series);
This will output 这将输出
array (size=2)
0 =>
array (size=2)
0 => int 1
1 => int 3
1 =>
array (size=2)
0 => int 7
1 => int 4
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