/**
* The main function for converting to an XML document.
* Pass in a multi dimensional array and this recrusively loops through and builds up an XML document.
*
* @param array $data
* @param string $rootNodeName - what you want the root node to be - defaultsto data.
* @param SimpleXMLElement $xml - should only be used recursively
* @return string XML
*/
public static function toXml($data, $rootNodeName = 'data', &$xml = null)
{
// turn off compatibility mode as simple xml throws a wobbly if you don't.
if (@ini_get('zend.ze1_compatibility_mode') == 1) {
@ini_set('zend.ze1_compatibility_mode', 0);
}
if (is_null($xml)) {
$xml = @simplexml_load_string("<?xml version='1.0' encoding='utf-8'?><{$rootNodeName} />");
}
// loop through the data passed in.
foreach ($data as $key => $value) {
// if numeric key, assume array of rootNodeName elements
if (is_numeric($key)) {
$key = $rootNodeName;
}
// delete any char not allowed in XML element names
$key = preg_replace('/[^a-z0-9\\-\\_\\.\\:]/i', '', $key);
// if there is another array found recrusively call this function
if (is_array($value)) {
// create a new node unless this is an array of elements
$node = Gio_Core_Array::isAssoc($value) ? $xml->addChild($key) : $xml;
// recrusive call - pass $key as the new rootNodeName
Gio_Core_Array::toXml($value, $key, $node);
} else {
// add single node.
$value = utf8_encode($value);
$node = $xml->addChild($key, $value);
}
}
// pass back as string. or simple xml object if you want!
return $xml->asXML();
}
