$info = [
[
"gid" => 1, "fid" => 2,
"nickname" => "立冬" ,
"avatar" => "http://cache.wangyangyang.vip/avatar_4.gif",
"remark" => "" ,
"desc" => "雪花一片一片的洒落在窗台上，野外间，为大地换上了新装~"
],
[
"gname" => "我的好友",
"gid" => 2,
"fid" => 3,
"nickname" => "立春",
"avatar" => "http://cache.wangyangyang.vip/avatar_3.jpg",
"remark" => "",
"desc" => "我在春天等着你的到来~"
],
[
"gname" => "朋友" ,
"gid" => 3,
"fid" => 4,
"nickname" => "立夏" ,
"avatar" => "http://cache.wangyangyang.vip/12222222222222.jpg" ,
"remark" => "" ,
"desc" => "你好啊，夏天！
"
],
[
"gname" => "同学" ,
"gid" => 4,
"fid" => 5,
"nickname" => "小雨" ,
"avatar" => "http://cache.wangyangyang.vip/avatar_5.jpg" ,
"remark" => "" ,
"desc" => "人间四月芳菲尽，山寺桃花始盛开！
"
],
[
"gname" =>"同学" ,
"gid" => 4,
"fid" => 6,
"nickname" => "残雪殇" ,
"avatar" => "http://cache.wangyangyang.vip/12222222222222.jpg" ,
"remark" => "小雪" ,
"desc" => "断桥残雪，三潭映月，君可知为何如此？"
]
]
合并后的数据
将数组中某一个相同的值作为键，然后天生一个新的三维数组
$list = []; foreach ($info as $k => $v) { $list[$v['gid']]['gid'] = $v['gid']; $list[$v['gid']]['gname'] = $v['gname']; $list[$v['gid']]['list'][] = $v; }得到数据
$list=[
1=>[
"gid"=>1,
"gname"=> "特殊关心",
"list"=>[
[
"gname"=>"特殊关心",
"gid"=>1,
"fid"=>2,
"nickname"=>"立冬",
"avatar"=>"http://cache.wangyangyang.vip/avatar_4.gif",
"remark"=>"",
"desc"=>"雪花一片一片的洒落在窗台上，野外间，为大地换上了新装~"
]
]
],
2=> [
"gid"=>2,
"gname"=> "我的好友",
"list"=>[
[
"gname"=>"我的好友",
"gid"=>2,
"fid"=>3,
"nickname"=> "立春",
"avatar"=>"http://cache.wangyangyang.vip/avatar_3.jpg",
"remark"=>"",
"desc"=> "我在春天等着你的到来~"
]
]
],
3=>[
"gid"=>3,
"gname"=>"朋友",
"list"=>[
[
"gname"=>"朋友",
"gid"=>3,
"fid"=>4,
"nickname"=> "立夏",
"avatar"=> "http://cache.wangyangyang.vip/12222222222222.jpg",
"remark"=> "",
"desc"=>"你好啊，夏天！
"
]
]
],
4=>[
"gid"=>4,
"gname"=>"同学",
"list"=>[
[
"gname"=>"同学",
"gid"=>4,
"fid"=>5,
"nickname"=>"小雨",
"avatar"=>"http://cache.wangyangyang.vip/avatar_5.jpg",
"remark"=> "",
"desc"=>"人间四月芳菲尽，山寺桃花始盛开！
"
],
[
"gname"=> "同学",
"gid"=>4,
"fid"=>6,
"nickname"=>"残雪殇",
"avatar"=>"http://cache.wangyangyang.vip/12222222222222.jpg",
"remark"=> "小雪",
"desc"=>"断桥残雪，三潭映月，君可知为何如此？"
]
]
]
]
