PHP解析xml为数组 - pingdongyi/blog-2 GitHub Wiki

/**
 * 将xml字符串转换成数组
 * */
public static function xml2Array($contents = NULL, $encoding = 'UTF-8', $get_attributes = 1, $priority = 'tag')
{
    if (!$contents) 
    {
        return array();
    }
    if (!function_exists('xml_parser_create'))
    {
        return array ();
    }
    $parser = xml_parser_create('');
    xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, $encoding);
    xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
    xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
    xml_parse_into_struct($parser, trim($contents), $xml_values);
    xml_parser_free($parser);
    if (!$xml_values)
        return array(); 
    $xml_array = array ();
    $parents = array ();
    $opened_tags = array ();
    $arr = array ();
    $current = & $xml_array;
    $repeated_tag_index = array (); 
    foreach ($xml_values as $data)
    {
        unset ($attributes, $value);
        extract($data);
        $result = array ();
        $attributes_data = array ();
        if (isset ($value))
        {
            if ($priority == 'tag')
                $result = trim($value);
            else
                $result['value'] = trim($value);
        }
        if (isset ($attributes) && $get_attributes) {
            foreach ($attributes as $attr => $val)
            {
                if ($priority == 'tag')
                    $attributes_data[$attr] = $val;
                else
                    $result['attr'][$attr] = $val; //Set all the attributes in a array called 'attr'
            }
        }
        if ($type == "open")
        { 
            $parent[$level -1] = & $current;
            if (!is_array($current) || (!in_array($tag, array_keys($current)))) {
                $current[$tag] = $result;
                if ($attributes_data)
                    $current[$tag . '_attr'] = $attributes_data;
                $repeated_tag_index[$tag . '_' . $level] = 1;
                if (isset($tag) && $tag && isset($current[$tag])) {
                    $current = & $current[$tag];
                }
            }
            else
            {
                if (isset ($current[$tag][0]))
                {
                    $current[$tag][$repeated_tag_index[$tag . '_' . $level]] = $result;
                    $repeated_tag_index[$tag . '_' . $level]++;
                }
                else
                { 
                    $current[$tag] = array (
                        $current[$tag],
                        $result
                    ); 
                    $repeated_tag_index[$tag . '_' . $level] = 2;
                    if (isset ($current[$tag . '_attr']))
                    {
                        $current[$tag]['0_attr'] = $current[$tag . '_attr'];
                        unset ($current[$tag . '_attr']);
                    }
                }
                $last_item_index = $repeated_tag_index[$tag . '_' . $level] - 1;
                $current = & $current[$tag][$last_item_index];
            }
        }
        elseif ($type == "complete")
        {
            if (!isset ($current[$tag]))
            {
                $current[$tag] = $result;
                $repeated_tag_index[$tag . '_' . $level] = 1;
                if ($priority == 'tag' && $attributes_data) {
                    $current[$tag . '_attr'] = $attributes_data;
                }
            }
            else
            {
                if (isset ($current[$tag][0]) && is_array($current[$tag])) {
                    $current[$tag][$repeated_tag_index[$tag . '_' . $level]] = $result;
                    if ($priority == 'tag' && $get_attributes && $attributes_data) {
                        $current[$tag][$repeated_tag_index[$tag . '_' . $level] . '_attr'] = $attributes_data;
                    }
                    $repeated_tag_index[$tag . '_' . $level]++;
                }
                else
                {
                    $current[$tag] = array (
                        $current[$tag],
                        $result
                    ); 
                    $repeated_tag_index[$tag . '_' . $level] = 1;
                    if ($priority == 'tag' && $get_attributes) {
                        if (isset ($current[$tag . '_attr']) && is_array($current[$tag]))
                        { 
                            $current[$tag]['0_attr'] = $current[$tag . '_attr'];
                            unset ($current[$tag . '_attr']);
                        }
                        if ($attributes_data)
                        {
                            $current[$tag][$repeated_tag_index[$tag . '_' . $level] . '_attr'] = $attributes_data;
                        }
                    }
                    $repeated_tag_index[$tag . '_' . $level]++; //0 and 1 index is already taken
                }
            }
        }
        elseif ($type == 'close')
        {
            $current = & $parent[$level -1];
        }
    }
    return ($xml_array);
}