Question

我有一个多维数组，如下所示：

<?php
$array = array(
"categories" => array(
    array(
        array(
            "arr1" => array(
                'Name' => "some name associated with 300",
                'availability' => true,
                'amount' => 300
            ),
            "arr2" => array(
                'Name' => "some other name",
            ),
            "arr3" => array(
                'Name' => "some other name",
            )
        )
    ),
    array(
        array(
            "arr1" => array(
                'Name' => "some name associated with 59",
                'availability' => true,
                'amount' => 59
            ),
            "arr2" => array(
                'Name' => "some other name",
            ),
            "arr3" => array(
                'Name' => "some other name",
            )
        )
    ),
    array(
        array(
            "arr1" => array(
                'Name' => "some name associated with 100",
                'availability' => true,
                'amount' => 100
            ),
            "arr2" => array(
                'Name' => "some other name",
            ),
            "arr3" => array(
                'Name' => "some other name",
            )
        )
    )
),
"departures" => array(
    //..same as above arrays..
),
"arrivals" => array(
    // ..same as above arrays..
),
//..more arrays
);
?>

我正在尝试按amount键值（从最小到最大）对其进行排序，这样我就可以得到这样的结果：

$array = array(
    "categories" => array(
        array(
            array(
                "arr1" => array(
                    'Name' => "some name associated with 59",
                    'availability' => true,
                    'amount' => 59
                ),
                "arr2" => array(
                    'Name' => "some other name",
                ),
                "arr3" => array(
                    'Name' => "some other name",
                )
            )
        ),
        array(
            array(
                "arr1" => array(
                    'Name' => "some name associated with 100",
                    'availability' => true,
                    'amount' => 100
                ),
                "arr2" => array(
                    'Name' => "some other name",
                ),
                "arr3" => array(
                    'Name' => "some other name",
                )
            )
        ),
        array(
            array(
                "arr1" => array(
                    'Name' => "some name associated with 300",
                    'availability' => true,
                    'amount' => 300
                ),
                "arr2" => array(
                    'Name' => "some other name",
                ),
                "arr3" => array(
                    'Name' => "some other name",
                )
            )
        )
    ),
    "departures" => array(
    //..same as above arrays..
    ),
    "arrivals" => array(
    //..same as above arrays..
    ),
);

我试图遍历数组并创建一个新数组，但我一再陷入困境......除非有完全不同的方法来做到这一点。你可以帮帮我吗？这是我到目前为止所尝试的：

$ordered_arr = array(
    "departures" => array(),
    "arrivals" => array(),
    "categories" => array()
);
foreach ($array as $key => $arrOpts) {
    $new_key = "";
    foreach ($arrOpts as $arrVals) {    
        if (empty($ordered_arr[$key])) {
            array_push($ordered_arr[$key], $arrVals);
        } else {
            var_dump();
            /// this is where im stuck
        }
    }
}

Answer 1

$categories = array();
foreach ($array['categories'] as $values) {
    foreach ($values as $value) {
        $categories[] = $value;
    }
}
$amounts = array();
foreach ($categories as $category) {
    foreach ($category as $v) {
        if (isset($v['amount']) === true) {
            $amounts[] = $v['amount'];
        }
    }
}
array_multisort($amounts, SORT_ASC, $categories);
foreach ($categories as &$category) {
    $category = array($category);
}
unset($category);
$array['categories'] = $categories;
var_dump($array);

如何重新排序多维数组并按金额值排序

1 个答案: