Recurisve XML parsing

[scoobasteve1982]

Hi there,

Does anyone know of a good script to recursively parse an XML document visiting all nodes. I'm doing this because I'm storing a hierarchical Web site that allows users to create an remove as many pages, sections as they want. I'm using a Flex component to handle building the tree, however I then need to parse the file to create a menu, sub-sections, etc.

An example of the XML might be:

<sections>
     <section title="Education">
             <section title="Health">
                       <section title="Physical Health">
                              <page title="Muscle Health 101" />
                       </section>
                       <section title="Mental Health">
                              <page title="Wellness" />
                       </section>
             </section>
             <section title="Biology">
                      <page title="Bio 101" />
                      <page title="Bio 202" />
             </section>
     </section>
     
</sections>

[crmalibu]

You can use php's SimpleXML extension to parse the xml.
http://www.php.net/manual/en/simplex...ples-basic.php

Or are you asking for help writing a recursive function to traverse it?

[scoobasteve1982]

You can use php's SimpleXML extension to parse the xml.
http://www.php.net/manual/en/simplex...ples-basic.php

Or are you asking for help writing a recursive function to traverse it?

I've used SimpleXML extension before, but I'm asking help for writing a recursive function to traverse it....

[crmalibu]

Does this help?

function traverse($nodes) {
    // nodes will be either <page> or <section> elements
    foreach ($nodes as $nodetype => $node) {
        $num_children = count($node);
        echo "$nodetype title='$node[title]' num_chilren=$num_children\n";
        
        if ($nodetype == 'section') { // or use if $num_children > 0
            traverse($node);
        }
    }
}

traverse(new SimpleXMLElement($str)); 

You could also just blindly call traverse() on $node if you like, because the resulting foreach loop just simply wont loop if theres no children. I added the $nodetype check just to help you get a bearing on the relationship.