public static function collapse(&$data, $plural, $singular)
{
if (!isset($data[$plural])) {
return;
}
if (!isset($data[$plural][$singular])) {
unset($data[$plural]);
return;
}
$data[$plural] = $data[$plural][$singular];
// the xml2array function behaves slightly differently if a node has one or multiple children
// so we need to check if the result of this operation is an associative array (when it's a single item)
// and if so, we nest it in an array
if (XMLHelper::isAssoc($data[$plural])) {
$data[$plural] = array($data[$plural]);
}
}
/**
* The main function for converting to an XML document.
* Pass in a multi dimensional array and this recursively loops through and builds up an XML document.
*
* @param array $data
* @param string $rootNodeName - what you want the root node to be - defaults to data.
* @param SimpleXMLElement $xml - should only be used recursively
* @return string XML
*/
public static function toXML($data, $rootNodeName = 'ResultSet', &$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) {
// no numeric keys in our xml please!
$numeric = 0;
if (is_numeric($key)) {
$numeric = 1;
$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)) {
$node = XMLHelper::isAssoc($value) || $numeric ? $xml->addChild($key) : $xml;
// recrusive call.
if ($numeric) {
$key = 'anon';
}
XMLHelper::toXml($value, $key, $node);
} else {
// add single node.
$value = htmlentities($value);
$xml->addChild($key, $value);
}
}
// pass back as XML
return $xml->asXML();
}
