<?php

    $arr=[

        ['张三','李四','王五'],

        ['吃鸡','消消乐','火影'],

        ['25','26','28'],

    ];

'如何转换为'

    $arr1=[

        ['张三','吃鸡','25'],

        ['李四','消消乐','26'],

        ['王五','火影','28']

    ];
//解答步骤：第一种方法-遍历数组

    $data=array();

    foreach ($arr as $key=>$value){

            foreach ($value as $k=>$v){

                $data[$k][$key]=$arr[$key][$k];

            }

    }

    echo "<pre>";print_r($data);
//第二种方法：array_column()函数
$data=[array_column($arr,'0'),array_column($arr,'1'),array_column($arr,'2')];

?>

$data = [

    ['age'=>23,'name'=>'张三','sex'=>'男'],

    ['age'=>26,'name'=>'李四','sex'=>'男'],

    ['age'=>20,'name'=>'王五','sex'=>'女'],

    ['age'=>29,'name'=>'赵六','sex'=>'男'],

];

请按照年龄从小到大，性别先女后男排序将数组重新排序。

array_multisort(array_column($data, 'age'),SORT_ASC,$data);

array_multisort(array_column($data, 'sex'),SORT_ASC,$data);

echo "<pre/>";print_r($data);