$xml->load ("Test.xml") related issues

$xml->load ("Test.xml") problem?
When the $xml->load ("Test.xml") has not been closed, the latter action will be followed by a load error.
Is there any way to implement the load action after the previous action is completed?

------Solution--------------------
The question you ask is usually not answered, it is a bit confusing, $xml is the instantiation of the object, call the Load method, what is the Load method program? What kind of class is it? What is the hint of error? You're going to summarize the problem.

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