Question

我想从多维数组中获取数组元素ad_id的值。当我使用print_r（$ xmls）打印这个数组时，我得到了这个数组：

.....
 [5] => SimpleXMLElement Object
                (
                    [@attributes] => Array
                        (
                            [ad_id] => 139293
                        )

                    [price] => 400,000
                    [price_comment] => SimpleXMLElement Object
                        (
                        )

                    [location] => Northern NSW
                    [new_used] => Used
                    [descript] => Ex fishing fleet mother ship, fully equipped for long range work. 
Ideal live aboard cruising /
                    [Resources] => SimpleXMLElement Object
                        (
                            [image] => //imgs.yachthub.com/1/3/9/2/9/3/0_2.jpg
                        )

                )

            [6] => SimpleXMLElement Object
                (
                    [@attributes] => Array
                        (
                            [ad_id] => 130247
                        )

                    [price] => POA
                    [price_comment] => SimpleXMLElement Object
                        (
                        )

                    [location] => Athens, Greece
                    [new_used] => Used
                    [descript] => Luxury motor yacht O’RAMA is 53,54m (175' 7") in length and was built by Golden Yachts in 2009
                    [Resources] => SimpleXMLElement Object
                        (
                            [image] => //imgs.yachthub.com/1/3/0/2/4/7/0_2.jpg
                        )

                )
.....

（这是一个更大的数组，我在这里只写了两个元素。）我想获得ad_id。我可以使用$ xmls-＆gt; Resources-＆gt; image获得图像的价值;但是在ad_id的情况下，它不起作用。也许是因为@attributes中的特殊字符？

Answer 1

$var = "@attributes";
$xmls->$var['ad_id'];

这应该有效

如何从多维数组中获取值？

1 个答案: