我有一个名为$ event_details的数组，如下所示：
//Output of print_r($event_details);
Array
(
[Today] => Array
(
[0] => Array
(
[rsvp_id] =>
[is_liked] =>
[group_name] =>
[event_id] => 439
[item_id] => 0
[aFeed] => Array
(
[feed_display] => mini
[comment_type_id] => event
)
[url] => http://jumbo.com/event/439/winter-sprinkles-1/
)
[1] => Array
(
[rsvp_id] => 1
[is_liked] =>
[group_name] =>
[event_id] => 503
[item_id] => 0
[aFeed] => Array
(
[feed_display] => mini
[comment_type_id] => event
)
[url] => http://jumbo.com/event/503/appcampusevent1/
)
[2] => Array
(
[rsvp_id] => 1
[is_liked] =>
[group_name] => Boxing Day
[event_id] => 504
[item_id] => 367
[aFeed] => Array
(
[feed_display] => mini
[comment_type_id] => event
)
[url] => http://jumbo.com/event/504/appcampusevent2/
)
)
[Tomorrow] => Array
(
[0] => Array
(
[rsvp_id] => 1
[is_liked] =>
[group_name] => New Athletic Group
[event_id] => 505
[item_id] => 332
[aFeed] => Array
(
[feed_display] => mini
[comment_type_id] => event
)
[url] => http://jumbo.com/event/505/sampleeve1/
)
[1] => Array
(
[rsvp_id] => 1
[is_liked] =>
[group_name] => New Athletic Group
[event_id] => 506
[item_id] => 332
[aFeed] => Array
(
[feed_display] => mini
[comment_type_id] => event
)
[url] => http://jumbo.com/event/506/sampleevent2/
)
)
[Thursday, January 7] => Array
(
[0] => Array
(
[rsvp_id] => 1
[is_liked] =>
[group_name] => Boxing Day
[event_id] => 501
[item_id] => 367
[aFeed] => Array
(
[feed_display] => mini
[comment_type_id] => event
)
[url] => http://jumbo.com/event/501/demoevent5/
)
)
[Saturday, January 9] => Array
(
[0] => Array
(
[rsvp_id] =>
[is_liked] =>
[group_name] => Campusknot test
[event_id] => 431
[item_id] => 335
[aFeed] => Array
(
[feed_display] => mini
[comment_type_id] => event
)
[url] => http://jumbo.com/event/431/test-myevent/
)
)
[Wednesday, January 13] => Array
(
[0] => Array
(
[rsvp_id] => 1
[is_liked] =>
[group_name] => Boxing Day
[event_id] => 500
[item_id] => 367
[aFeed] => Array
(
[feed_display] => mini
[comment_type_id] => event
)
[url] => http://jumbo.com/event/500/demoevent5/
)
)
[Friday, January 15] => Array
(
[0] => Array
(
[rsvp_id] => 1
[is_liked] =>
[group_name] => New Athletic Group
[event_id] => 498
[item_id] => 332
[aFeed] => Array
(
[feed_display] => mini
[comment_type_id] => event
)
[url] => http://jumbo.com/event/498/demoevent2/
)
)
[Wednesday, January 20] => Array
(
[0] => Array
(
[rsvp_id] => 1
[is_liked] =>
[group_name] =>
[event_id] => 499
[item_id] => 0
[aFeed] => Array
(
[feed_display] => mini
[comment_type_id] => event
)
[url] => http://jumbo.com/event/499/demoevent3/
)
)
[Saturday, January 30] => Array
(
[0] => Array
(
[rsvp_id] =>
[is_liked] =>
[group_name] => Campusknot Test Group
[event_id] => 473
[item_id] => 329
[aFeed] => Array
(
[feed_display] => mini
[comment_type_id] => event
)
[url] => http://jumbo.com/event/473/test3/
)
)
[Tuesday, February 16] => Array
(
[0] => Array
(
[rsvp_id] =>
[is_liked] =>
[group_name] => Campusknot Test Group
[event_id] => 471
[item_id] => 329
[aFeed] => Array
(
[feed_display] => mini
[comment_type_id] => event
)
[url] => http://jumbo.com/event/471/campusknot-b-039-day/
)
)
)
现在我变量$group_id = 332;我希望将$group_id与密钥['item_id']中存在的值进行比较，该值存在于内部3级数组的每个键中。
我想从发现不匹配的数组$event_details中删除所有这些数组元素。
最后，在完成所有数组操作后，我希望得到的数组$event_details如下：
Array
(
[Tomorrow] => Array
(
[0] => Array
(
[rsvp_id] => 1
[is_liked] =>
[group_name] => New Athletic Group
[event_id] => 505
[item_id] => 332
[aFeed] => Array
(
[feed_display] => mini
[comment_type_id] => event
)
[url] => http://jumbo.com/event/505/sampleeve1/
)
[1] => Array
(
[rsvp_id] => 1
[is_liked] =>
[group_name] => New Athletic Group
[event_id] => 506
[item_id] => 332
[aFeed] => Array
(
[feed_display] => mini
[comment_type_id] => event
)
[url] => http://jumbo.com/event/506/sampleevent2/
)
)
[Friday, January 15] => Array
(
[0] => Array
(
[rsvp_id] => 1
[is_liked] =>
[group_name] => New Athletic Group
[event_id] => 498
[item_id] => 332
[aFeed] => Array
(
[feed_display] => mini
[comment_type_id] => event
)
[url] => http://jumbo.com/event/498/demoevent2/
)
)
)
有人可以以最佳和有效的方式让事情发生吗？
答案 0 :(得分：0)
试试这个：
<?php
foreach($event_details as $day => $detail){
foreach($detail as $event_key => $event){
if($event['item_id'] != $group_id) unset($event_details[$day][$event_key]);
}
}
?>
答案 1 :(得分：-1)
试试这个，它肯定会起作用。
foreach($event_details as $day => $detail){
foreach($detail as $event_key => $event){
if($event['item_id'] != $group_id) unset($event_details[$day]);
}
}