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Save Changes to PDF Documents - Zend_Pdf
There are two methods that save changes to PDF documents: the Zend_Pdf::save() and Zend_Pdf::render() methods.
Zend_Pdf::save($filename, $updateOnly = false) saves the PDF document to a file. If $updateOnly is TRUE, then only the new PDF file segment is appended to a file. Otherwise, the file is overwritten.
Zend_Pdf::render($newSegmentOnly = false) returns the PDF document as a string. If $newSegmentOnly is TRUE, then only the new PDF file segment is returned.
Example #1 Saving PDF Documents