Description:
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When trying to work with this extension a full documentation on the function parameters and what they mean would come in handy as it exists for standard PHP functions.

Although you might take this information out of the docs coming with libsvn0-dev it would be nice to have this directly with the package or on the php.net documentation page.

Reproduce code:
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Try getting information on what a function does without reading the C source of the extension.

Expected result:
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Open your preferred Web browser or Textviewer and look up the info there easily

Actual result:
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Required to read and understand the source of the SVN extension or have a look at foreign library documentations and guess what the extension does with this stuff internally.