php数组格式化优化？

Question

有没有更优办法

Answer 1

$data = [
    'type' => [
           'appmsg'
        ],
    'media_id' => [
            'fajlfjaljfa'
        ],
    'content' => [
        ''
    ]
];
array_walk($data,function(&$value,$key){
    $value = isset($value[0])?$value[0]:'';
});
var_dump($data);