我正在使用PHP 5.5.2后端MySQL。我有一个self-referencing database table，我得到array，如下所示：
Array
(
[0] => Array
(
[id] => 47
[s_id] =>
[m_id] =>
[title] => Aaa
[type] => G
[created_at] => 2014-08-29 06:05:18
[frequency] => d
[start] => 2014-08-29
[time] => 09:00
[children] => Array
(
[0] => Array
(
[id] => 48
[s_id] => 37
[m_id] =>
[title] => bbbbbbbbbbbbb
[type] => Q
[created_at] => 2014-08-29 06:05:18
[frequency] =>
[start] =>
[time] =>
[children] => Array
(
[0] => Array
(
[id] => 49
[s_id] => 38
[m_id] =>
[title] => cccccccccc
[type] => A
[created_at] => 2014-08-29 06:05:18
[frequency] =>
[start] =>
[time] =>
[children] => Array
(
)
)
[1] => Array
(
[id] => 50
[s_id] => 39
[m_id] =>
[title] => ddddddddd dddd
[type] => A
[created_at] => 2014-08-29 06:05:18
[frequency] =>
[start] =>
[time] =>
[children] => Array
(
)
)
[2] => Array
(
[id] => 51
[s_id] => 40
[m_id] =>
[title] => eeeeeee eeeeeee.
[type] => A
[created_at] => 2014-08-29 06:05:18
[frequency] =>
[start] =>
[children] => Array
(
)
)
)
)
[1] => Array
(
[id] => 54
[s_id] => 18
[m_id] =>
[title] => fffffffff ffff
[type] => Q
[created_at] => 2014-08-29 06:05:18
[frequency] =>
[start] =>
[time] =>
[children] => Array
(
[0] => Array
(
[id] => 55
[s_id] => 19
[m_id] =>
[title] => gggggg gggggg
[type] => A
[created_at] => 2014-08-29 06:05:18
[frequency] =>
[start] =>
[time] =>
[children] => Array
(
)
)
[1] => Array
(
[id] => 56
[s_id] => 20
[m_id] =>
[title] => hhhhhhhhhh hhhh
[type] => A
[created_at] => 2014-08-29 06:05:18
[frequency] =>
[start] =>
[children] => Array
(
)
)
)
)
[2] => Array
(
[id] => 57
[s_id] => 21
[m_id] =>
[title] => iiiiiiii iiii
[type] => Q
[created_at] => 2014-08-29 06:05:18
[frequency] =>
[start] =>
[children] => Array
(
[0] => Array
(
[id] => 58
[s_id] => 22
[m_id] =>
[title] => jjjjjjj jjj
[type] => A
[created_at] => 2014-08-29 06:05:18
[frequency] =>
[start] =>
[time] =>
[children] => Array
(
)
)
[1] => Array
(
[id] => 59
[s_id] => 23
[m_id] =>
[title] => kkkkkkkk kkkk
[type] => A
[created_at] => 2014-08-29 06:05:18
[frequency] =>
[start] =>
[time] =>
[children] => Array
(
)
)
)
)
)
)
[1] => Array
(
[id] => 47
[s_id] =>
[m_id] =>
[title] => xxxx xxx xxx
[type] => G
[created_at] => 2014-08-29 06:05:18
[frequency] => d
[start] => 2014-08-29
[time] => 09:00
[children] => Array
(
[0] => Array
(
[id] => 112
[s_id] => 37
[m_id] =>
[title] => lllllllllll llllll
[type] => Q
[created_at] => 2014-08-29 06:05:18
[frequency] =>
[start] =>
[time] =>
[children] => Array
(
[0] => Array
(
[id] => 113
[s_id] => 38
[m_id] =>
[title] => mmmmmmm mmmm
[type] => A
[created_at] => 2014-08-29 06:05:18
[frequency] =>
[start] =>
[time] =>
[children] => Array
(
)
)
[1] => Array
(
[id] => 123
[s_id] => 39
[m_id] =>
[title] => nnnnnnnnn hhhhh
[type] => A
[created_at] => 2014-08-29 06:05:18
[frequency] =>
[start] =>
[time] =>
[children] => Array
(
)
)
)
)
[1] => Array
(
[id] => 456
[s_id] => 18
[m_id] =>
[title] => ppppppp pppppp
[type] => Q
[created_at] => 2014-08-29 06:05:18
[frequency] =>
[start] =>
[time] =>
[children] => Array
(
[0] => Array
(
[id] => 545
[s_id] => 19
[m_id] =>
[title] => qqqqqqqqq qqq
[type] => A
[created_at] => 2014-08-29 06:05:18
[frequency] =>
[start] =>
[time] =>
[children] => Array
(
)
)
[1] => Array
(
[id] => 435
[s_id] => 20
[m_id] =>
[title] => ssssssssss sssssssssss
[type] => A
[created_at] => 2014-08-29 06:05:18
[frequency] =>
[start] =>
[children] => Array
(
)
)
)
)
)
)
)
此N nesting levels中可能有array。
现在对于每个数组元素，如果['type']为G，那么我想要remove keys [s_id]和[m_id]以及any other type我希望remove keys [start], [end] }和[time]。
编辑：我尝试使用递归函数，但没有给出所需的结果。
private function getarray(array &$arr){
foreach ($arr as $item)
{
switch ($item['type'])
{
case 'G' :
unset($item['s_id'], $item['m_id']);
break;
default :
unset($item['start'], $item['end'], $item['time']);
break;
}
foreach ($item["children"] as $c)
{
$child = array();
getarray($child);
}
}
}
我怎样才能做到这一点？
感谢。
答案 0 :(得分：1)
function filterMyArray($arr){
if(isset($arr['type'] && $arr['type'] == 'G'){
unset($arr['s_id']);
unset($arr['m_id']);
}
else if(isset($arr['type']){
unset($arr['start']);
unset($arr['end']);
unset($arr['time']);
}
if(isset($arr['children'])
$arr['children'] = filterMyArray($arr['children']);
return $arr;
}
这个函数没有经过测试，我是从内存中写的。 但严重的是，谷歌搜索这样的东西并没有伤害。你需要5分钟才能获得所需的所有知识......
答案 1 :(得分：0)
我自己解决了：
private function getarray(array &$arr){
foreach ($arr as &$item)
{
switch ($item['type'])
{
case 'G' :
unset($item['s_id'], $item['m_id']);
break;
default :
unset($item['start'], $item['end'], $item['time']);
break;
}
if (is_array($item['children']) && sizeof($item['children']) > 0){
getarray($item['children']);
}
}
}
这很好用。我已经发布了这个答案，以帮助其他新手php并试图克服他们的问题。
对于嫉妒的人来说，这是一记耳光，他们没有帮助我，但问道，＃34;你做了多久的尝试？＆＃34;具有优越的复杂态度。我自己做了。