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<span class="description">
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<div class="descriptionheading">Overview</div>
This example shows how we can change the context node for the XPATH processing so that it executes from another node than the root node.
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<div class="descriptionheading">Context Nodes</div>
In PHP the XPATH engine uses the root node as the default context node.<br/><br/>
In newer versions of PHP we can add an optional context node from the document which allows us to execute a query from
any node in the document.<br/><br/>
In this case we use <span class="interestingdescription">$node</span> as the context node and thus are executing ./color for each car, and not for the root of the document.
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<div class='exampleheading'>Web Page Output:<br><br>
<img src='DomExample3b.png'>
</div>
</span>
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