private static function &convert($node_name, $arr = array())
{
//print_arr($node_name);
$xml = self::getXMLRoot();
$node = $xml->createElement($node_name);
if (is_array($arr)) {
// get the attributes first.;
if (isset($arr['@attributes'])) {
foreach ($arr['@attributes'] as $key => $value) {
if (!self::isValidTagName($key)) {
throw new Exception('[Array2XML] Illegal character in attribute name. attribute: ' . $key . ' in node: ' . $node_name);
}
$node->setAttribute($key, self::bool2str($value));
}
unset($arr['@attributes']);
//remove the key from the array once done.
}
// check if it has a value stored in @value, if yes store the value and return
// else check if its directly stored as string
if (isset($arr['@value'])) {
$node->appendChild($xml->createTextNode(self::bool2str($arr['@value'])));
unset($arr['@value']);
//remove the key from the array once done.
//return from recursion, as a note with value cannot have child nodes.
return $node;
} else {
if (isset($arr['@cdata'])) {
$node->appendChild($xml->createCDATASection(self::bool2str($arr['@cdata'])));
unset($arr['@cdata']);
//remove the key from the array once done.
//return from recursion, as a note with cdata cannot have child nodes.
return $node;
} else {
if (isset($arr['@xml'])) {
$fragment = $xml->createDocumentFragment();
$fragment->appendXML($arr['@xml']);
$node->appendChild($fragment);
unset($arr['@xml']);
return $node;
}
}
}
}
//create subnodes using recursion
if (is_array($arr)) {
// recurse to get the node for that key
foreach ($arr as $key => $value) {
if (!self::isValidTagName($key)) {
throw new Exception('[Array2XML] Illegal character in tag name. tag: ' . $key . ' in node: ' . $node_name);
}
if (is_array($value) && is_numeric(key($value))) {
// MORE THAN ONE NODE OF ITS KIND;
// if the new array is numeric index, means it is array of nodes of the same kind
// it should follow the parent key name
foreach ($value as $k => $v) {
$node->appendChild(self::convert($key, $v));
}
} else {
// ONLY ONE NODE OF ITS KIND
$node->appendChild(self::convert($key, $value));
}
unset($arr[$key]);
//remove the key from the array once done.
}
}
// after we are done with all the keys in the array (if it is one)
// we check if it has any text value, if yes, append it.
if (!is_array($arr)) {
$node->appendChild($xml->createTextNode(self::bool2str($arr)));
}
return $node;
}
