170 lines
5.2 KiB
PHP
170 lines
5.2 KiB
PHP
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<?php
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/**
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* OpenLSS - Lighter Smarter Simpler
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*
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* This file is part of OpenLSS.
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*
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* OpenLSS is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* OpenLSS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the
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* GNU Lesser General Public License along with OpenLSS.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace LSS;
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use \DOMDocument;
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use \Exception;
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/**
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* XML2Array: A class to convert XML to array in PHP
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* It returns the array which can be converted back to XML using the Array2XML script
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* It takes an XML string or a DOMDocument object as an input.
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*
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* See Array2XML: http://www.lalit.org/lab/convert-php-array-to-xml-with-attributes
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*
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* Author : Lalit Patel
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* Website: http://www.lalit.org/lab/convert-xml-to-array-in-php-xml2array
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* License: Apache License 2.0
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* http://www.apache.org/licenses/LICENSE-2.0
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* Version: 0.1 (07 Dec 2011)
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* Version: 0.2 (04 Mar 2012)
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* Fixed typo 'DomDocument' to 'DOMDocument'
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*
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* Usage:
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* $array = XML2Array::createArray($xml);
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*/
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class XML2Array {
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protected static $xml = null;
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protected static $encoding = 'UTF-8';
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protected static $prefix_attributes = '@';
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/**
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* Initialize the root XML node [optional]
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* @param $version
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* @param $encoding
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* @param $format_output
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*/
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public static function init($version = '1.0', $encoding = 'UTF-8', $format_output = true) {
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self::$xml = new DOMDocument($version, $encoding);
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self::$xml->formatOutput = $format_output;
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self::$encoding = $encoding;
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}
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/**
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* Convert an XML to Array
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* @param string $node_name - name of the root node to be converted
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* @param int - Bitwise OR of the libxml option constants see @link http://php.net/manual/zh/libxml.constants.php
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* @param array $arr - aray to be converterd
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* @return DOMDocument
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*/
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public static function &createArray($input_xml, $options = 0) {
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$xml = self::getXMLRoot();
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if(is_string($input_xml)) {
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$parsed = $xml->loadXML($input_xml, $options);
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if(!$parsed) {
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throw new Exception('[XML2Array] Error parsing the XML string.');
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}
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} else {
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if(get_class($input_xml) != 'DOMDocument') {
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throw new Exception('[XML2Array] The input XML object should be of type: DOMDocument.');
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}
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$xml = self::$xml = $input_xml;
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}
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$array[$xml->documentElement->tagName] = self::convert($xml->documentElement);
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self::$xml = null; // clear the xml node in the class for 2nd time use.
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return $array;
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}
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/**
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* Convert an Array to XML
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* @param mixed $node - XML as a string or as an object of DOMDocument
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* @return mixed
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*/
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protected static function &convert($node) {
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$output = array();
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switch ($node->nodeType) {
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case XML_CDATA_SECTION_NODE:
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$output[static::$prefix_attributes.'cdata'] = trim($node->textContent);
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break;
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case XML_TEXT_NODE:
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$output = trim($node->textContent);
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break;
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case XML_ELEMENT_NODE:
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// for each child node, call the covert function recursively
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for ($i=0, $m=$node->childNodes->length; $i<$m; $i++) {
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$child = $node->childNodes->item($i);
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$v = self::convert($child);
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if(isset($child->tagName)) {
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$t = $child->tagName;
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// avoid fatal error if the content looks like '<html><body>You are being <a href="https://some.url">redirected</a>.</body></html>'
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if(isset($output) && !is_array($output)) {
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continue;
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}
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// assume more nodes of same kind are coming
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if(!isset($output[$t])) {
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$output[$t] = array();
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}
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$output[$t][] = $v;
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} else {
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//check if it is not an empty text node
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if($v !== '') {
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$output = $v;
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}
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}
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}
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if(is_array($output)) {
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// if only one node of its kind, assign it directly instead if array($value);
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foreach ($output as $t => $v) {
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if(is_array($v) && count($v)==1) {
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$output[$t] = $v[0];
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}
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}
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if(empty($output)) {
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//for empty nodes
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$output = '';
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}
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}
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// loop through the attributes and collect them
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if($node->attributes->length) {
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$a = array();
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foreach($node->attributes as $attrName => $attrNode) {
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$a[$attrName] = (string) $attrNode->value;
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}
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// if its an leaf node, store the value in @value instead of directly storing it.
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if(!is_array($output)) {
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$output = array(static::$prefix_attributes.'value' => $output);
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}
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$output[static::$prefix_attributes.'attributes'] = $a;
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}
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break;
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}
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return $output;
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}
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/*
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* Get the root XML node, if there isn't one, create it.
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*/
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protected static function getXMLRoot(){
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if(empty(self::$xml)) {
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self::init();
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}
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return self::$xml;
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}
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}
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