This tutorial will present the key points of this API, and working examples using both C and the Python bindings: Table of content: Libxml2 main API is tree based, where the parsing operation results in a document loaded completely in memory, and expose it as a tree of nodes all availble at the same time.
This is very simple and quite powerful, but has the major limitation that the size of the document that can be hamdled is limited by the size of the memory available.
This document describes the use of the Xml Text Reader streaming API added to libxml2 in version 2.5.0 .
This API is closely modeled after the Xml Text Reader and Xml Reader classes of the C# language.
When you receive a signed document, you may want to validate its signature(s) to verify the signer and the signed content.
Depending on how you have configured your application, validation may occur automatically.
Several times this one is asked on the net but an answer could not be found in the docs on ... If not, click here." you cannot use header( 'Location: ...' ) as you can't sent any output before the headers are sent.
If you want to redirect an user and tell him he will be redirected, e. So, either you have to use the HTML meta refresh thingy or you use the following: The HTTP status code changes the way browsers and robots handle redirects, so if you are using header(Location:) it's a good idea to set the status code at the same time.
It then suppresses that content, allowing you to view and sign the document in a static and secure state.The problem is that this programming model is relatively complex, not well standardized, cannot provide validation directly, makes entity, namespace and base processing relatively hard.The Xml Text Reader API from C# provides a far simpler programming model.If the status code is not specified, header('Location:') defaults to 302.When using PHP to output an image, it won't be cached by the client so if you don't want them to download the image each time they reload the page, you will need to emulate part of the HTTP protocol.