php数据优化
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Array
(
[0] => Array
(
[id] => 19
[receive_id] => 41
[mac] => a4:3d:78:fc:49:50
[staytime] => 400
)
[1] => Array
(
[id] => 20
[receive_id] => 42
[mac] => a4:3d:78:fc:49:51
[staytime] => 200
)
[2] => Array
(
[id] => 22
[receive_id] => 42
[mac] => a4:3d:78:fc:49:50
[staytime] => 2443
)
[3] => Array
(
[id] => 23
[receive_id] => 42
[mac] => a4:3d:78:fc:49:50
[staytime] => 1443
)
[4] => Array
(
[id] => 24
[receive_id] => 42
[mac] => a4:3d:78:fc:49:51
[staytime] => 1143
)
[5] => Array
(
[id] => 25
[receive_id] => 42
[mac] => a4:3d:78:fc:49:51
[staytime] => 543
)
)
举例将以上数组按mac区分成
Array
(
[a4:3d:78:fc:49:50] => Array
(
[id] => 19
[receive_id] => 41
[mac] => a4:3d:78:fc:49:50
[staytime] => 400
[timmarr] => Array
(
[0] => Array
(
[id] => 19
[receive_id] => 41
[mac] => a4:3d:78:fc:49:50
[staytime] => 400
)
[1] => Array
(
[id] => 22
[receive_id] => 42
[mac] => a4:3d:78:fc:49:50
[staytime] => 2443
)
[2] => Array
(
[id] => 23
[receive_id] => 42
[mac] => a4:3d:78:fc:49:50
[staytime] => 1443
)
)
)
[a4:3d:78:fc:49:51] => Array
(
[id] => 20
[receive_id] => 42
[mac] => a4:3d:78:fc:49:51
[staytime] => 200
[timmarr] => Array
(
[0] => Array
(
[id] => 20
[receive_id] => 42
[mac] => a4:3d:78:fc:49:51
[staytime] => 200
)
[1] => Array
(
[id] => 24
[receive_id] => 42
[mac] => a4:3d:78:fc:49:51
[staytime] => 1143
)
[2] => Array
(
[id] => 25
[receive_id] => 42
[mac] => a4:3d:78:fc:49:51
[staytime] => 543
)
)
)
)
----------------------
php代码：
$macArr = [];
$macUserArr = [];
for($i=0;$i<$countList;$i++){
if(!in_array($list[$i][‘mac‘],$macArr)){
$macArr[] = $list[$i][‘mac‘];
$macUserArr[$list[$i][‘mac‘]] = $list[$i];
$macUserArr[$list[$i][‘mac‘]][‘timmarr‘][] = $list[$i];
}else{
$macUserArr[$list[$i][‘mac‘]][‘timmarr‘][] = $list[$i];
}
}
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