PHP比较多维数组

这里有一个小班给你:

class ArrayDiffer
{
public static function recursiveDiff(array $firstArray, array $secondArray): array
{
    $difference = [];

    foreach ($firstArray as $key => $value) {
        if (\array_key_exists($key, $secondArray)) {
            if (\is_array($value)) {
                $recursiveDiff = self::recursiveDiff($value, $secondArray[$key]);
                if (\count($recursiveDiff)) {
                    $difference[$key] = $recursiveDiff;
                }
            } else {
                if ($value != $secondArray[$key]) {
                    $difference[$key] = $value;
                }
            }
        } else {
            $difference[$key] = $value;
        }
    }

    return $difference;
}
}

下面是一个测试,它演示了它的工作原理:

public function testDiff(): void
{
    $arrayDiffer = new ArrayDiffer();

    $firstArray  = \json_decode(
        '[{
            "code": "video",
            "type": "input",
            "labels": {
                "en": "Youtube video"
            },
            "required": false,
            "purpose": "add",
            "options": null
        }]', true
    );
    $secondArray = \json_decode(
        '[{
            "code": "video",
            "type": "input",
            "labels": {
                "pt": "Vídeo Youtube"
            },
            "required": false,
            "purpose": "add",
            "options": null
        }]', true
    );

    $this->assertEquals(
        [
            0 => [
                'labels' => [
                    'en' => 'Youtube video',
                ],
            ],
        ],
        $arrayDiffer::recursiveDiff($firstArray, $secondArray)
    );
}