update

core/class/Xml2Array.class.php

@@ -0,0 +1,141 @@
+<?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;
+    }
+}
+?>