PHP 向每个二维数组追加元素

// 原数组

$data = [
[
'first'=>'first_yuansu',
'second'=>'qigemingzi',
],
[
'third'=>'disange',
'fourth'=>'last',
]
];
//追加数组

$addArr = [
'add'=>'test'
];
array_walk($data, function (&$value, $key, $addArr) {
$value = array_merge($value, $addArr);
}, $addArr);
print_r($data);
// 运行结果

Array
(
[0] => Array
(
[first] => first_yuansu
[second] => qigemingzi
[add] => test
)
[1] => Array
(
[third] => disange
[fourth] => last
[add] => test
)

)