日常工作中經常遇到陣列處理，這裡整理一下常用的

//二維陣列根據age由小到大排序
$arr = [
    ['name' => '網三', 'age' => 33],
    ['name' => '謝四', 'age' => 22],
    ['name' => '趙六', 'age' => 33],
    ['name' => '趙1', 'age' => 23],
    ['name' => '趙8', 'age' => 13],
];
usort($arr, function($x, $y) {
    return strcasecmp($x['age'], $y['age']);
});
var_dump($arr);

//過濾二維陣列age大於23的值
$result = array_filter($arr, function($vo) {
    return $vo['age'] <= 23;
});
var_dump($result);

//取出二維陣列的age列的values
$result = array_column($arr, 'age');
var_dump($result);

//使得二維陣列每個age+1
$result = array_map(function($vo){$vo['age'] += 1; return $vo;},$arr);
var_dump($result);