在 PHP 上将单个数组转换为多维数组 [关闭]答案

【问题标题】：Convert Single Array to multidimensional array on PHP [closed]在 PHP 上将单个数组转换为多维数组 [关闭]
【发布时间】：2019-04-19 10:03:12
【问题描述】：

我在 excel 文件中有如下数组：

$array = [ 
    ["JVPM12019030050", "31-Mar-19", 612011005, "Lorem ipsum", "Lorem ipsum", 40000001, NULL],
    ["JVPM12019030050", "31-Mar-19", 622011005, "Lorem ipsum", "Lorem ipsum", 40000002, NULL],
    ["JVPM12019030050", "31-Mar-19", 642011005, "Lorem ipsum", "Lorem ipsum", 40000003, NULL],
    ["JVPM12019030050", "31-Mar-19", 652011005, "Lorem ipsum", "Lorem ipsum", 40000004, NULL],
    ["JVPM12019030051", "01-Apr-19", 672011005, "Lorem ipsum", "Lorem ipsum", 50000005, NULL],
    ["JVPM12019030051", "01-Apr-19", 682011005, "Lorem ipsum", "Lorem ipsum", 60000005, NULL],
    ["JVPM12019030051", "01-Apr-19", 692011005, "Lorem ipsum", "Lorem ipsum", 70000005, NULL],
    ["JVPM12019030051", "01-Apr-19", 652011005, "Lorem ipsum", "Lorem ipsum", 80000005, NULL]
];

我想把上面的数组转换成这样的数组：

$new_array = [
    [
        "code" => "JVPM12019030050",
        "date" => "31-Mar-19",
        "data" => [
            [612011005, "Lorem ipsum", "Lorem ipsum", 40000001, NULL],
            [622011005, "Lorem ipsum", "Lorem ipsum", 40000002, NULL],
            [642011005, "Lorem ipsum", "Lorem ipsum", 40000003, NULL],
            [652011005, "Lorem ipsum", "Lorem ipsum", 40000004, NULL]
        ]
    ],
    [
        "code" => "JVPM12019030052",
        "date" => "01-Apr-19",
        "data" => [
            [672011005, "Lorem ipsum", "Lorem ipsum", 50000005, NULL],
            [682011005, "Lorem ipsum", "Lorem ipsum", 60000005, NULL],
            [692011005, "Lorem ipsum", "Lorem ipsum", 70000005, NULL],
            [652011005, "Lorem ipsum", "Lorem ipsum", 80000005, NULL]
        ]
    ],
];

请给我一些建议。谢谢了。

【问题讨论】：

数组元素是固定的。？

标签： php arrays multidimensional-array foreach

【解决方案1】：

您可以使用array_reduce 将数组汇总为关联数组并使用$code 作为索引。使用array_shift 删除每个内部数组的第一个元素。

使用array_values 将关联数组转换为简单数组。

$array = //Your array

$new_array = array_values(array_reduce( $array , function( $c, $v ){
    $code = array_shift( $v );
    $date = array_shift( $v );

    if ( !isset( $c[ $code ] ) ) $c[ $code ] = [ "code" => $code, "date" => $date, "data" => [] ];
    $c[ $code ]["data"][] = $v;

    return $c;
}, [] ));

$new_array 将导致：

【讨论】：

【解决方案2】：

你可以这样处理

$res = array();
foreach($array as $v){ 
  if(array_key_exists($v[0], $res)){
    array_push($res[$v[0]]['data'], array_slice($v,2, count($v)));
  }
  else{
    $res[$v[0]] = [
        'code' => $v[0],
        'date' => $v[1],
        'data' => [] 
      ];
   array_push($res[$v[0]]['data'], array_slice($v,2, count($v)));
  }
}

print_r(array_values($res));

结果：-

【讨论】：