如何从多维数组中“提取”值

Question

我无法弄清楚如何从这个数组中获得我需要的值:我需要的3辆车的值是。

1. 类=> span3 scrape_img
2. 类=>价格scrape_price价格
3. 类=> scrape_make the make
4. 级=> scrape_year年度

我试图通过PHP数组文档来解决这个问题，但没有成功。

Array
(
    [query] => Array
        (
            [count] => 12
            [created] => 2013-02-04T17:46:34Z
            [lang] => en-US
            [results] => Array
                (
                    [div] => Array
                        (
                            [0] => Array
                                (
                                    [class] => span3 scrape_img
                                    [span] => Array
                                        (
                                            [class] => scrape
                                            [a] => Array
                                                (
                                                    [href] => http://cant-reveal-this.com/cars/hyundai/ix35-2-0gls-auto/
                                                    [img] => Array
                                                        (
                                                            [alt] => Featured Image
                                                            [src] => /wp-content/uploads/2013/02/01863-270x150.jpg
                                                        )
                                                )
                                        )
                                )

                            [1] => Array
                                (
                                    [class] => price scrape_price
                                    [p] => From R249,900
                                )

                            [2] => Array
                                (
                                    [class] => span3 scrape_img
                                    [span] => Array
                                        (
                                            [class] => scrape
                                            [a] => Array
                                                (
                                                    [href] => http://cant-reveal-this.com/cars/hyundai/ix35-2-0gls/
                                                    [img] => Array
                                                        (
                                                            [alt] => Featured Image
                                                            [src] => /wp-content/uploads/2013/02/1930-270x150.jpg
                                                        )
                                                )
                                        )
                                )

                            [3] => Array
                                (
                                    [class] => price scrape_price
                                    [p] => From R239,900
                                )

                            [4] => Array
                                (
                                    [class] => span3 scrape_img
                                    [span] => Array
                                        (
                                            [class] => scrape
                                            [a] => Array
                                                (
                                                    [href] => http://cant-reveal-this.com/cars/ford/everest-3-0-tdci-xlt-4/
                                                    [img] => Array
                                                        (
                                                            [alt] => Featured Image
                                                            [src] => /wp-content/uploads/2013/02/1876-270x150.jpg
                                                        )
                                                )
                                        )
                                )

                            [5] => Array
                                (
                                    [class] => price scrape_price
                                    [p] => From R279,900
                                )
                        )

                    [span] => Array
                        (
                            [0] => Array
                                (
                                    [class] => scrape_make
                                    [strong] => Make
                                    [content] => hyundai
                                )

                            [1] => Array
                                (
                                    [class] => scrape_year
                                    [strong] => Year
                                    [content] => 2011
                                )

                            [2] => Array
                                (
                                    [class] => scrape_make
                                    [strong] => Make
                                    [content] => hyundai
                                )

                            [3] => Array
                                (
                                    [class] => scrape_year
                                    [strong] => Year
                                    [content] => 2011
                                )

                            [4] => Array
                                (
                                    [class] => scrape_make
                                    [strong] => Make
                                    [content] => ford
                                )

                            [5] => Array
                                (
                                    [class] => scrape_year
                                    [strong] => Year
                                    [content] => 2011
                                )
                        )
                )
        )
)

Answer 1

看起来你可以从评论和另一个答案中找出答案。不过，我想澄清一点，就是我对这个问题的评论有点误导，所以你可以不理会。实际上，我假设class是指class对象，而实际上class只是字符串的一个键(在我看来，这个数组就像一些解析过的HTML/XML)。当您在注释中发布数组的var_dump()时，我意识到了这一点。

问题是数组结构相当复杂，所有嵌套都在进行，所以很难看到什么是什么。总的来说，我同意另一个答案；用var_dump()进行调试是一种很好的检查方法。这是我对答案的看法。

假设数组变量是$array

1.

$array['query']['results']['div'][0]['span']['a']['href']
$array['query']['results']['div'][0]['span']['a']['img']['src']

2.

$array['query']['results']['div'][1]['span']['p']

3.

$array['query']['results']['span'][0]['content']

4.

$array['query']['results']['span'][1]['content']

Answer 2

尝试如下:如果该数组位于名为$array的变量中

1-$array['query']['result']['div'][0]['a']['href']

2-$array['query']['result']['div'][1]['p']

3-$array['query']['result']['span'][0]['class']

要调试并找到所需的值，请尝试这样做，

var_dump($array['query']);

然后

var_dump($array['query']['result']);

...etc