- <?php
- /**
- * XML2Array: A class to convert XML to array in PHP
- * It returns the array which can be converted back to XML using the Array2XML script
- * It takes an XML string or a DOMDocument object as an input.
- *
- * See Array2XML: http://www.lalit.org/lab/convert-php-array-to-xml-with-attributes
- *
- * Author : Lalit Patel
- * website: http://www.lalit.org/lab/convert-xml-to-array-in-php-xml2array
- * License: Apache License 2.0
- * http://www.apache.org/licenses/LICENSE-2.0
- * Version: 0.1 (07 Dec 2011)
- * Version: 0.2 (04 Mar 2012)
- * Fixed typo 'DomDocument' to 'DOMDocument'
- *
- * Usage:
- * $array = XML2Array::createArray($xml);
- */
- class XML2Array {
- private static $xml = null;
- private static $encoding = 'UTF-8';
- /**
- * Initialize the root XML node [optional]
- * @param $version
- * @param $encoding
- * @param $format_output
- */
- public static function init($version = '1.0', $encoding = 'UTF-8', $format_output = true) {
- self::$xml = new DOMDocument($version, $encoding);
- self::$xml->formatOutput = $format_output;
- self::$encoding = $encoding;
- }
- /**
- * Convert an XML to Array
- * @param string $node_name - name of the root node to be converted
- * @param array $arr - aray to be converterd
- * @return DOMDocument
- */
- public static function &createArray($input_xml) {
- $xml = self::getXMLRoot();
- if(is_string($input_xml)) {
- $parsed = $xml->loadXML($input_xml);
- if(!$parsed) {
- throw new Exception('[XML2Array] Error parsing the XML string.');
- }
- } else {
- if(get_class($input_xml) != 'DOMDocument') {
- throw new Exception('[XML2Array] The input XML object should be of type: DOMDocument.');
- }
- $xml = self::$xml = $input_xml;
- }
- $array[$xml->documentElement->tagName] = self::convert($xml->documentElement);
- self::$xml = null; // clear the xml node in the class for 2nd time use.
- return $array;
- }
- /**
- * Convert an Array to XML
- * @param mixed $node - XML as a string or as an object of DOMDocument
- * @return mixed
- */
- private static function &convert($node) {
- $output = array();
- switch ($node->nodeType) {
- case XML_CDATA_SECTION_NODE:
- $output['@cdata'] = trim($node->textContent);
- break;
- case XML_TEXT_NODE:
- $output = trim($node->textContent);
- break;
- case XML_ELEMENT_NODE:
- // for each child node, call the covert function recursively
- for ($i=0, $m=$node->childNodes->length; $i<$m; $i++) {
- $child = $node->childNodes->item($i);
- $v = self::convert($child);
- if(isset($child->tagName)) {
- $t = $child->tagName;
- // assume more nodes of same kind are coming
- if(!isset($output[$t])) {
- $output[$t] = array();
- }
- $output[$t][] = $v;
- } else {
- //check if it is not an empty text node
- if($v !== '') {
- $output = $v;
- }
- }
- }
- if(is_array($output)) {
- // if only one node of its kind, assign it directly instead if array($value);
- foreach ($output as $t => $v) {
- if(is_array($v) && count($v)==1) {
- $output[$t] = $v[0];
- }
- }
- if(empty($output)) {
- //for empty nodes
- $output = '';
- }
- }
- // loop through the attributes and collect them
- if($node->attributes->length) {
- $a = array();
- foreach($node->attributes as $attrName => $attrNode) {
- $a[$attrName] = (string) $attrNode->value;
- }
- // if its an leaf node, store the value in @value instead of directly storing it.
- if(!is_array($output)) {
- $output = array('@value' => $output);
- }
- $output['@attributes'] = $a;
- }
- break;
- }
- return $output;
- }
- /*
- * Get the root XML node, if there isn't one, create it.
- */
- private static function getXMLRoot(){
- if(empty(self::$xml)) {
- self::init();
- }
- return self::$xml;
- }
- }
- ?>
- //该片段来自于http://www.codesnippet.cn/detail/2407201410050.html
来源: http://www.codesnippet.cn/detail/2407201410050.html