$book->removeChild($a);

It's a bit hard to tell because you haven't used <code> tags around your code, but I don't see where you are assigning any value to $a so it is probably undef when you try to use it as an argument to removeChild().

Also, please don't use $a as a variable name - it has a special meaning for sort and can bite you if you are not careful.

In reply to Re: LibXML error when trying to delete a node in DOM by hippo
in thread LibXML error when trying to delete a node in DOM by msivask

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