How can I determine where in the PDF to place content using Zend PDF?

I am creating a PDF using Zend's built-in PDF engine; however how can I determine in what dimension (height, width - x, y) where to place the text on a plain A4 layout page?

I understand 开发者_如何学C0,0 is bottom,right (for some reason) - but what is the top/left values?

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Call getWidth() and getHeight() on your PDF Page object to get the page size and figure it out from there.

The value is in "points" (1/72 of an inch).

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