PHP가 배열을 추출할 수 있나요?

//示例数组
$users=[
['name'=>'Alice','age'=>20,'gender'=>'female'],
['name'=>'Bob','age'=>25,'gender'=>'male'],
['name'=>'Charlie','age'=>30,'gender'=>'male']
];
//提取'name'列的值
$names=array_column($users,'name');
print_r($names);

Array
(
[0]=>Alice
[1]=>Bob
[2]=>Charlie
)

//示例数组
$numbers=[1,2,3,4,5];
//对每个元素进行求平方操作
$squares=array_map(function($n){
return$n*$n;
},$numbers);
print_r($squares);

Array
(
[0]=>1
[1]=>4
[2]=>9
[3]=>16
[4]=>25
)

//示例数组
$numbers=[1,2,3,4,5];
//过滤出偶数
$even_numbers=array_filter($numbers,function($n){
return($n%2==0);
});
print_r($even_numbers);

Array
(
[1]=>2
[3]=>4
)