Using the xmlTree

This section discusses some of the details of the structure of the trees created when parsing an XML document with the xmlTree interface and how to use them.

The samples/xmlapi directory contains the following code examples:

  • xmlTree01_New - shows many ways of creating new nodes in an XML tree

  • xmlTree02_Get - shows ways of extracting information from an XML document

  • xmlTree03_Sibling - shows many of the tree traversal mechanisms

  • xmlTree04_Ns - shows how to resolve and examine namespace information in a tree

  • xmlTree05_SetNs - shows how to create and set namespace information in a tree

  • xmlTree06_Copy - shows how to make copies of nodes in an XML tree

  • xmlTree07_Encoding - shows how to use various input/output encodings

  • xmlTree08_XPath - shows how to use XPath expressions

  • xmlTree09_DTD - shows how to extract DTD information

  • xmlTree10_XSL - shows how to apply an XSL stylesheet

Below is a small example program that shows how the xmlTree API can be used to open an XML document, add content to an element, add another element, and print the output.

    <ResultTitle>Generic Page Title</ResultTitle>
<$doc = (xmlTreeNewDocFromString($xmlRaw, 'XML_PARSE_NOBLANKS'))>
<$root = (xmlTreeGetRootElement($doc))>
<$title = (xmlTreeGetChildren($root, 'ResultTitle'))>
<$titleText = (xmlTreeGetContent($title))>
Existing title is "$titleText"
<$ret = (xmlTreeAddContent($title, ", now with 12% more fun"))>
<$ret = (xmlTreeNewElement($root, 'Abstract', 'content content'))>
<$output = (xmlTreePrintDoc($doc, 'INDENT'))>
after changes doc is:

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