php 将任意二维数组转换一维数组(键值对)

<?php

$a = [
    [
        \'id\' => 33, // 这里的键名不固定
        \'name\' => \'aaa\',
    ],
    [
        \'id\' => 22,
        \'name\' => \'bbb\'
    ]
];

$dat = [];
foreach ($a as $b) {
    list($k, $v) = array_values($b);
    $dat[$k] = $v;
}

var_export($dat); // 输出：array ( 33 => \'aaa\', 22 => \'bbb\', )