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php 将数组转换成xml

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php 将数组转换成xml的类

class ArrayToXML
{
	/**
	 * 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 ($xml == null)
		{
			$xml = simplexml_load_string("<!--?xml version='1.0' encoding='utf-8'?--><$rootNodeName />");
		}
 
		// loop through the data passed in.
		foreach($data as $key => $value)
		{
			// no numeric keys in our xml please!
			if (is_numeric($key))
			{
				// make string key...
				$key = "unknownNode_". (string) $key;
			}
 
			// replace anything not alpha numeric
			$key = preg_replace('/[^a-z]/i', '', $key);
 
			// if there is another array found recrusively call this function
			if (is_array($value))
			{
				$node = $xml->addChild($key);
				// recrusive call.
				ArrayToXML::toXml($value, $rootNodeName, $node);
			}
			else 
			{
				// add single node.
                                $value = htmlentities($value);
				$xml->addChild($key,$value);
			}
 
		}
		// pass back as string. or simple xml object if you want!
		return $xml->asXML();
	}
}

 


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