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What are the recommended libraries for XML in PHP? Advantages? Looking to create/send/parse XML. Needs to support High Volume (Millions of calls per day)
PHP supports a number of XML libraries.
If memory is an issue, for instance due to large files, use an Event-based parser over a tree-based one.Tree-based parsers must fully load the file into memory in order to parse the XML. Event-based parsers do not need to load the entire file into memory to begin parsing.
See this article about what’s new with XML in PHP5 and a discussion of their pros and cons.You might also reconsider where you store the data, since filesystem might be too slow for millions of calls. How about Xindice?