php简单的xml元素问题/ bug

Question

I have some xml, lets say <names number="12"></names>

When I run the following:

$simpleXMLElement = new SimpleXMLElement($xml);
pr($simpleXMLElement);

I get the following:

SimpleXMLElement Object
(
    [@attributes] => Array
        (
            [number] => 12
        )

    [0] => 

)

It throws in that 0 entry. This is weird. I don't know what it's supposed to represent. If I do this instead:

<names number="12"><name first="oliver" /></names>

I get the following output:

SimpleXMLElement Object
(
    [@attributes] => Array
        (
            [number] => 12
        )

    [name] => SimpleXMLElement Object
        (
            [@attributes] => Array
                (
                    [first] => oliver
                )

        )

)

This is as expected (for me at least). Any thoughts/direction?

Answer 1

First: if you don't correctly format your post, the XML will not be displayed. Indent any code with at least 4 spaces.

Secondly, do not expect print_r() or var_dump() to give you an exact representation of a SimpleXMLElement because SimpleXML uses lots of magic, so children and attributes won't necessarily show up in the output.