php的数组问题，一个二维数组怎么取出里面的部分元素组成一个新数组？
$arr=Array
(
[0] => Array
(
[id] => 2
[nickname] => chenjudong
[email] =>
)
[1] => Array
(
[id] => 8
[nickname] => 天使爱美丽
[email] =>
)
[2] => Array
(
[id] => 15
[nickname] => 倩，我是宁采臣
[email] =>
)
[3] => Array
(
[id] => 1
[nickname] => ruiwurensheng
[email] =>
)
[4] => Array
(
[id] => 11
[nickname] => 我爱爱坏心情
[email] =>
)
)
怎么变成：
$arr=Array
(
[0] => Array
(
[id] => 2
[nickname] => chenjudong
)
[1] => Array
(
[id] => 8
[nickname] => 天使爱美丽
)
[2] => Array
(
[id] => 15
[nickname] => 倩，我是宁采臣
)
[3] => Array
(
[id] => 1
[nickname] => ruiwurensheng
)
[4] => Array
(
[id] => 11
[nickname] => 我爱爱坏心情
)
)
最新回答
给十年后的我
2024-10-14 02:15:58
$arr=array(array('id'=>2,'nickname'=>'chenjudong','email'=>''), array ('id'=>8,'nickname'=>'天使爱美丽','email'=>''));
$arrNew=array();
foreach($arr as $k=>$v){
$arrNew[$k]=array('id'=>$v['id'],'nickname'=>$v['nickname']);
}
print_r($arrNew);
//重新循环下读取id、nickname组成新数组
半袖桃花
2024-10-14 06:57:59
foreach ($arr as &$value) {
foreach($value as $k=>$v){
if($v == ''){ //假定'email'=>'',或者自己换成合用的,如if($k == 'email')
unset($value[$k]);
}
}
}
追问
谢谢，但是这里的email只是暂时为空呢，email都是有数据的，相当于去掉email这个元素，要怎么去呢？
追答
//只是email的话,下面这个就够了
foreach ($arr as &$value) {
if(isset($value['email'])){
unset($value['email']);
}
}
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