用PHP从数组中提取段数据

Question

我有一个类似于数据库中的存在数据： 我需要将图像地址数据提取到数组级别[pic]到[image]值 我想使用PHP从[image]中提取图像地址数据 我需要提取图像地址数据以用于移动应用程序，通过php中的JsonArray和Json_encode在移动应用程序上接收数据 感谢您的帮助

Array
(
    [0] => Array
        (
            [pic] => Array
                (
                    [0] => Array
                        (
                            [image] => file_ext/reporter/images/IMG_20181116_210224_191.jpg
                            [width] => 1280
                            [height] => 960
                        )

                    [1] => Array
                        (
                            [image] => file_ext/reporter/images/IMG_20181116_210250_912.jpg
                            [width] => 1280
                            [height] => 960
                        )

                    [2] => Array
                        (
                            [image] => file_ext/reporter/images/IMG_20181116_210256_141.jpg
                            [width] => 1280
                            [height] => 960
                        )

                    [3] => Array
                        (
                            [image] => file_ext/reporter/images/IMG_20181116_210303_326.jpg
                            [width] => 1280
                            [height] => 960
                        )

                    [4] => Array
                        (
                            [image] => file_ext/reporter/images/IMG_20181116_210310_857.jpg
                            [width] => 1280
                            [height] => 960
                        )

                    [5] => Array
                        (
                            [image] => file_ext/reporter/images/IMG_20181116_210345_024.jpg
                            [width] => 1280
                            [height] => 960
                        )

                )

        )

)

Answer 1

您可以使用此功能来获取所有图像数据，

function array_column_recursive(array $haystack, $needle) {
    $found = [];
    array_walk_recursive($haystack, function($value, $key) use (&$found, $needle) {
        if ($key == $needle)
            $found[] = $value;
    });
    return $found;
}
$data = json_encode(array_column_recusrive($input,'image')); 

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