在PHP中从多维数组创建新数组

$multiArray = array(
    array('name' => 'John', 'age' => 25),
    array('name' => 'Jane', 'age' => 30),
    array('name' => 'Bob', 'age' => 35)
);

$newArray = array();
foreach ($multiArray as $array) {
    $newArray[] = array('name' => $array['name']);
}

print_r($newArray);

$multiArray = array(
    array('name' => 'John', 'age' => 25, 'skills' => array('PHP', 'JavaScript')),
    array('name' => 'Jane', 'age' => 30, 'skills' => array('Java', 'C++')),
    array('name' => 'Bob', 'age' => 35, 'skills' => array('Python', 'Ruby'))
);

$newArray = array();
function copyValues($array, &$newArray) {
    foreach ($array as $key => $value) {
        if ($key == 'name') {
            $newArray[] = array('name' => $value);
        }
        if (is_array($value)) {
            copyValues($value, $newArray);
        }
    }
}

copyValues($multiArray, $newArray);
print_r($newArray);

$multiArray = array(
    array('name' => 'John', 'age' => 25),
    array('name' => 'Jane', 'age' => 30),
    array('name' => 'Bob', 'age' => 35)
);

$newArray = array_map(function($array) {
    return array('name' => $array['name']);
}, $multiArray);

print_r($newArray);