从 XML 对象中提取数据
我如何从该 xml 对象中提取数据，该对象是某个数组的值：
Array ( [Title] => SimpleXMLElement Object (
[0] => The Key of Life; A Metaphysical Investigation )
[ASIN] => SimpleXMLElement Object ( [0] => 0982385099 ) ...
How do i extract the data from that xml object which is a value of a certain array:
Array ( [Title] => SimpleXMLElement Object (
[0] => The Key of Life; A Metaphysical Investigation )
[ASIN] => SimpleXMLElement Object ( [0] => 0982385099 ) ...
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对对象进行字符串类型转换。
$变量=（字符串）$FieldValue[0]；
这可行，因为 SimpleXml 的所有子项都是对象类型而不是字符串。
Do string typecasting of the object.
$variable = (string) $FieldValue[0];
That would work, as SimpleXml has all the children in object type and not string.
说 $X 是对象，所以要打印
：
say $X is the object, so to print
you do:
重要的是要明白，您使用的不是数组，而是使用 SimpleXMLElement 对象，这是不一样的。
您可以执行
$xml->tag->subtag，而不是执行$array['key']['subkey']。SimpleXML 节点不是字符串或数组，尽管它们的行为类似于字符串和数组。确保始终将值类型转换为显式字符串。
如果您要访问第一个节点，则无需使用
[0]。这是假设的。您可以使用 PHP 5.2 或更高版本将 SimpleXMLElement 对象转换为真正的关联数组：
$array = json_decode(json_encode($xml), true);It's important to understand that you're not working with an array — you're working with a SimpleXMLElement object, which is not the same.
Instead of doing
$array['key']['subkey'], you would do$xml->tag->subtag.SimpleXML nodes are not strings or arrays, although they behave string-like and array-like. Make sure you always typecast the value to an explicit string.
If you're accessing the first node, you don't need to use
[0]. It's assumed.You can convert SimpleXMLElement objects into true associative arrays in PHP 5.2 or newer with:
$array = json_decode(json_encode($xml), true);