合并数组的内部阵列

Question

我有以下数组：

Array (        
        [0] => Array
                (
                    [0] => 1
                    [1] => 2
                    [2] => 3
                )
        [1] => Array
                (
                    [0] => Array
                        (
                            [0] => 1
                            [1] => 2
                        )
                    [1] => Array
                        (  
                            [0] => 3
                            [1] => 4
                        )
                ) 
    )

我想做的是将[1]的内部阵列合并在一起，给我一个看起来像这样的新数组：

Array (    
         [0] => Array
                        (
                            [0] => 1
                            [1] => 2
                            [2] => 3
                        )
        [1] => Array
                        (
                            [0] => 1
                            [1] => 2
                            [2] => 3
                            [4] => 4
                        )
    )

请问我如何做到这一点？谢谢

Answer 1

<?php
$arr = array(
    0 => array(
        0 => 1,
        1 => 2,
        2 => 3
    ),
    1 => array(
        0 => array(
            0 => 1,
            1 => 2
        ),
        1 => array(  
            0 => 3,
            1 => 4
        )
    ) 
);
for ($i = 0; $i < count($arr); $i++) {
    $fixedArray = array();
    foreach ($arr[$i] as $key => $value) {
        if (!is_array($value)) continue;
        foreach ($value as $subKey => $subValue)
            $fixedArray[] = $subValue;
    }
    if (count($fixedArray) > 0)
        $arr[$i] = $fixedArray;
}
print_r($arr);
?>

输出：

Array
(
    [0] => Array
        (
            [0] => 1
            [1] => 2
            [2] => 3
        )
    [1] => Array
        (
            [0] => 1
            [1] => 2
            [2] => 3
            [3] => 4
        )
)

那是一种做到这一点的一种方法，不是说这是最好的方法，但它有效。

Answer 2

这个矿山：

<?php
$multiArray = [
    0 => [
        0 =>1,
        1 => 2,
        2 => 3
    ],
    1 => [
        0 => [
            0 => 1,
            1 => 2
        ],
        1 => [
            0 => 3,
            1 => 4
        ]
    ]
];
$aux = [];
foreach($multiArray as $key => $arr){
    foreach($arr as $k =>$a){
        if (is_array($a) ){
            $aux= $arr;
            break;
        }
    }
}
list($item1, $item2) = $aux;
$new = array_merge($item1, $item2);
$multiArray[1] =$new;
print_r($multiArray);
?>