Question

我需要以下阵列的帮助：

$outputarray = array(
    array("id" => 2,"name" => "ProductName","comment" => array("best product comment 1","best product comment 2","best product comment 3"))
);

输出应为：

array_unique

我需要返回值数组的“注释”键

$outputarray = array(
    array("id" => 2,"name" => "ProductName","comment" => "best product comment 3")
);

不起作用。它给了我独特但不是那个评论数组。这只是给我注释键值的最后一个值像下面一样

{{1}}

请帮帮我。

Answer 1

您可以使用array_reduce：

<?php
$input_array = [
  ['id' => 2, 'name' => 'ProductName', 'comment' => 'best product comment 1'],
  ['id' => 2, 'name' => 'ProductName', 'comment' => 'best product comment 2'],
  ['id' => 2, 'name' => 'ProductName', 'comment' => 'best product comment 3'],
  ['id' => 3, 'name' => 'ProductName2', 'comment' => 'best product comment 4'],
  ['id' => 3, 'name' => 'ProductName2', 'comment' => 'best product comment 5']
];

$output_array = array_values(array_reduce($input_array, function($output_array, $item) {
  if (array_key_exists($item['id'], $output_array)) {
    $output_array[$item['id']]['comment'][] = $item['comment'];
  }
  else {
    $item['comment'] = (array)$item['comment'];
    $output_array[$item['id']] = $item;
  }
  return $output_array;
}, []));

echo '<pre>'; var_dump($output_array); echo '</pre>';

Demo

Answer 2

我不确定这是否是您要讨论的内容，但这是将商品评论归为一组的方法。

$inputarray = array(
array("id" => 2,"name" => "ProductName","comment" => "best product comment 1"),
array("id" => 2,"name" => "ProductName","comment" => "best product comment 2"),
array("id" => 2,"name" => "ProductName","comment" => "best product comment 3")
);
$outputarray = [];
$tmp_comments = [];
foreach ($inputarray as $arrays) {
  $tmp_comments[$arrays['id']][] = $arrays['comment'];
  $outputarray[$arrays['id']] = array('id' => $arrays['id'], 'name' => $arrays['name']); 
}

foreach ($tmp_comments as $id => $comments) {
  $outputarray[$id]['comment'] = $comments;
}

print_r($outputarray);

输出

Array
(
    [2] => Array
        (
            [id] => 2
            [name] => ProductName
            [comment] => Array
                (
                    [0] => best product comment 1
                    [1] => best product comment 2
                    [2] => best product comment 3
                )

        )

)

php多维数组，具有唯一的不同值，使键值数组

2 个答案: