function xmlEscape($value)
{
$escapedValue = XMLNode::xmlentities($value, ENT_NOQUOTES);
if ($value !== $escapedValue) {
return "<![CDATA[{$value}]]>";
}
return $value;
}
/**
* @param $output file handle to write to, or true for stdout, or null if XML to be returned as string
* @return string
*/
function &toXml($output = null)
{
$nullVar = null;
$out = '';
if ($this->parent === null) {
// This is the root node. Output information about the document.
$out .= "<?xml version=\"" . $this->getAttribute('version') . "\" encoding=\"UTF-8\"?>\n";
if ($this->getAttribute('type') != '') {
if ($this->getAttribute('url') != '') {
$out .= "<!DOCTYPE " . $this->getAttribute('type') . " PUBLIC \"" . $this->getAttribute('dtd') . "\" \"" . $this->getAttribute('url') . "\">";
} else {
$out .= "<!DOCTYPE " . $this->getAttribute('type') . " SYSTEM \"" . $this->getAttribute('dtd') . "\">";
}
}
}
if ($this->name !== null) {
$out .= '<' . $this->name;
foreach ($this->attributes as $name => $value) {
$value = XMLNode::xmlentities($value);
$out .= " {$name}=\"{$value}\"";
}
$out .= '>';
}
$out .= XMLNode::xmlentities($this->value, ENT_NOQUOTES);
foreach ($this->children as $child) {
if ($output !== null) {
if ($output === true) {
echo $out;
} else {
fwrite($output, $out);
}
$out = '';
}
$out .= $child->toXml($output);
}
if ($this->name !== null) {
$out .= '</' . $this->name . '>';
}
if ($output !== null) {
if ($output === true) {
echo $out;
} else {
fwrite($output, $out);
}
return $nullVar;
}
return $out;
}
/**
* Escape XML entities.
* @param $string string
*/
function _escapeXmlEntities($string)
{
return XMLNode::xmlentities($string);
}
