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copied!<p>Here is my take on this. After a number of hours I got it all right. This example has support for the viz: namespace too, so you can use more detailed node elements and placements.</p> <pre><code>// Construct DOM elements $xml = new DomDocument('1.0', 'UTF-8'); $xml->formatOutput = true; $gexf = $xml->createElementNS(null, 'gexf'); $gexf = $xml->appendChild($gexf); // Assign namespaces for GexF with VIZ :) $gexf->setAttribute('xmlns:viz', 'http://www.gexf.net/1.1draft/viz'); // Skip if you dont need viz! $gexf->setAttributeNS('http://www.w3.org/2000/xmlns/' ,'xmlns:xsi', 'http://www.w3.org/2001/XMLSchema-instance'); $gexf->setAttributeNS('http://www.w3.org/2001/XMLSchema-instance', 'schemaLocation', 'http://www.gexf.net/1.2draft http://www.gexf.net/1.2draft/gexf.xsd'); // Add Meta data $meta = $gexf->appendChild($xml->createElement('meta')); $meta->setAttribute('lastmodifieddate', date('Y-m-d')); $meta->appendChild($xml->createElement('creator', 'PHP GEXF Generator v0.1')); $meta->appendChild($xml->createElement('description', 'by me etc')); // Add Graph data! $graph = $gexf->appendChild($xml->createElement('graph')); $nodes = $graph->appendChild($xml->createElement('nodes')); $edges = $graph->appendChild($xml->createElement('edges')); // Add Node! $node = $xml->createElement('node'); $node->setAttribute('id', '1'); $node->setAttribute('label', 'Hello world!'); // Set color for node $color = $xml->createElement('viz:color'); $color->setAttribute('r', '1'); $color->setAttribute('g', '1'); $color->setAttribute('b', '1'); $node->appendChild($color); // Set position for node $position = $xml->createElement('viz:position'); $position->setAttribute('x', '1'); $position->setAttribute('y', '1'); $position->setAttribute('z', '1'); $node->appendChild($position); // Set size for node $size = $xml->createElement('viz:size'); $size->setAttribute('value', '1'); $node->appendChild($size); // Set shape for node $shape = $xml->createElement('viz:shape'); $shape->setAttribute('value', 'disc'); $node->appendChild($shape); // Add Edge (assuming there is a node with id 2 as well!) $edge = $xml->createElement('edge'); $edge->setAttribute('source', '1'); $edge->setAttribute('target', '2'); // Commit node & edge changes to nodes! $edges->appendChild($edge); $nodes->appendChild($node); // Serve file as XML (prompt for download, remove if unnecessary) header('Content-type: "text/xml"; charset="utf8"'); header('Content-disposition: attachment; filename="internet.gexf"'); // Show results! echo $xml->saveXML(); </code></pre> <p>Eat your heart out! Feel free to email me your project results, I am curious.</p>

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