网上那个controller打印输出XML的helper不能用！
我在网上找到一个输出xml的helper http://maestric.com/doc/php/codeigniter_xml使用非常方便，可以直接在controller输出XML，但是我用了什么都打印不出来？？
Example$this->load->helper('xml');
$dom = xml_dom();
$book = xml_add_child($dom, 'book');
xml_add_child($book, 'title', 'Hyperion');
$author = xml_add_child($book, 'author', 'Dan Simmons');
xml_add_attribute($author, 'birthdate', '1948-04-04');
xml_print($dom);Result
<?xml version="1.0"?>
<book>
<title>Hyperion</title>
<author birthdate="1948-04-04">Dan Simmons</author>
</book>
<?phpif ( ! defined('BASEPATH')) exit('No direct script access allowed');
/*
**********************************************************
Usage
$this->load->helper('xml');
$dom = xml_dom();
$book = xml_add_child($dom, 'book');
xml_add_child($book, 'title', 'Hyperion');
$author = xml_add_child($book, 'author', 'Dan Simmons');
xml_add_attribute($author, 'birthdate', '1948-04-04');
xml_print($dom);
**********************************************************
Result
<?xml version="1.0"?>
<book>
<title>Hyperion</title>
<author birthdate="1948-04-04">Dan Simmons</author>
</book>
*/
if ( ! function_exists('xml_dom'))
{
function xml_dom()
{
return new DOMDocument('1.0');
}
}
if ( ! function_exists('xml_add_child'))
{
function xml_add_child($parent, $name, $value = NULL, $cdata = FALSE)
{
if($parent->ownerDocument != "")
{
$dom = $parent->ownerDocument;
}
else
{
$dom = $parent;
}
$child = $dom->createElement($name);
$parent->appendChild($child);
if($value != NULL)
{
if ($cdata)
{
$child->appendChild($dom->createCdataSection($value));
}
else
{
$child->appendChild($dom->createTextNode($value));
}
}
return $child;
}
}
if ( ! function_exists('xml_add_attribute'))
{
function xml_add_attribute($node, $name, $value = NULL)
{
$dom = $node->ownerDocument;
$attribute = $dom->createAttribute($name);
$node->appendChild($attribute);
if($value != NULL)
{
$attribute_value = $dom->createTextNode($value);
$attribute->appendChild($attribute_value);
}
return $node;
}
}
if ( ! function_exists('xml_print'))
{
function xml_print($dom, $return = FALSE)
{
$dom->formatOutput = TRUE;
$xml = $dom->saveXML();
if ($return)
{
return $xml;
}
else
{
echo $xml;
}
}
}
/* End of file xml_helper.php */
/* Location: ./system/application/helpers/MY_xml_helper.php */
helper类有什么问题吗？？
是不是不支持 2.01啊？？ 高手看看！
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