function arrayToXml($arr)    {        $xml = "
     
      ";        foreach ($arr as $key=>$val)        {            if (is_numeric($val)){                $xml.="<".$key.">".$val."
      ";            }else{                 $xml.="<".$key.">
      ";            }        }        $xml.="
     ";        return $xml;    }    //将XML转为array    function xmlToArray($xml)    {        //禁止引用外部xml实体        libxml_disable_entity_loader(true);        $values = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);        return $values;    }

$obj2="
       
      
        
      
       1235571234
        
      
       1235571234201605241726128109
        
      
        
      
        
      
       101
        
      
       101
        
      
       101
        
      
       1
        
      
        
      
        
      
        
      
        
      
      
     ";

打印结果

Array(    [wxappid] => wx1b7559b818e3c123    [mch_id] => 1235571234    [mch_billno] => 1235571234201605241726128109    [client_ip] => 127.0.0.1    [re_openid] => oiPuduGV7gJ_MOSfAWpVmhhgXh-U    [total_amount] => 101    [min_value] => 101    [max_value] => 101    [total_num] => 1    [nick_name] => 方倍工作室    [send_name] => 方倍工作室    [wishing] => 恭喜发财    [act_name] => 方倍工作室送红包    [remark] => 关注公众账号)