atelierspierrot/library

<?php
/**
 * This file is part of the Library package.
 *
 * Copyleft (ↄ) 2013-2016 Pierre Cassat <me@e-piwi.fr> and contributors
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 * The source code of this package is available online at 
 * <http://github.com/atelierspierrot/library>.
 */

namespace Library\Converter;

/**
 * XML to array converter
 *
 * Freely (but mostly) inspired by the work of Adrien aka Gaarf & contributors
 * (see <http://gaarf.info/2009/08/13/xml-string-to-php-array/>).
 *
 * @author  piwi <me@e-piwi.fr>
 */
class Xml2Array
    extends AbstractConverter
{

    public static function convert($xmlstr)
    {
        $doc = new \DOMDocument();
        $doc->loadXML($xmlstr);
        $root = $doc->documentElement;
        $output = self::parse($root);
        $output['@root'] = $root->tagName;
        return $output;
    }

    public static function parse($node)
    {
        $output = array();
        switch ($node->nodeType) {
            case XML_CDATA_SECTION_NODE:
            case XML_TEXT_NODE:
                $output = trim($node->textContent);
                break;

            case XML_ELEMENT_NODE:
                for ($i=0, $m=$node->childNodes->length; $i<$m; $i++) {
                    $child = $node->childNodes->item($i);
                    $v = self::parse($child);
                    if (isset($child->tagName)) {
                        $t = $child->tagName;
                        if (!isset($output[$t])) {
                            $output[$t] = array();
                        }
                        $output[$t][] = $v;
                    } elseif ($v || $v === '0') {
                        $output = (string) $v;
                    }
                }
                if ($node->attributes->length && !is_array($output)) {
                    $output = array('@content'=>$output);
                }
                if (is_array($output)) {
                    if ($node->attributes->length) {
                        $a = array();
                        foreach ($node->attributes as $attrName => $attrNode) {
                            $a[$attrName] = (string) $attrNode->value;
                        }
                        $output['@attributes'] = $a;
                    }
                    foreach ($output as $t => $v) {
                        if (is_array($v) && count($v)==1 && $t!='@attributes') {
                            $output[$t] = $v[0];
                        }
                    }
                }
                break;
        }
        return $output;
    }

}