系统环境：
阿里云服务器 centos 6.5 操作系统 amh控制面板 PHP5.3版本
错误描述：
网站后台频繁出现： xm
目前处理办法：
后台清空缓存，程序会清空runtime 里面内容，就出现错误。后台操作过程中还是频繁出现xm
报错文件路径\admin\ThinkPHP\Lib\Think\Template\TagLib.class.php
118行
<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2009 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
// $Id$
/**
+------------------------------------------------------------------------------
* ThinkPHP标签库TagLib解析基类
+------------------------------------------------------------------------------
* @category Think
* @package Think
* @subpackage Template
* @author liu21st <liu21st@gmail.com>
* @version $Id$
+------------------------------------------------------------------------------
*/
class TagLib extends Think
{//类定义开始
/**
+----------------------------------------------------------
* 标签库定义XML文件
+----------------------------------------------------------
* @var string
* @access protected
+----------------------------------------------------------
*/
protected $xml = '';
/**
+----------------------------------------------------------
* 标签库名称
+----------------------------------------------------------
* @var string
* @access protected
+----------------------------------------------------------
*/
protected $tagLib ='';
/**
+----------------------------------------------------------
* 标签库标签列表
+----------------------------------------------------------
* @var string
* @access protected
+----------------------------------------------------------
*/
protected $tagList = array();
/**
+----------------------------------------------------------
* 标签库分析数组
+----------------------------------------------------------
* @var string
* @access protected
+----------------------------------------------------------
*/
protected $parse = array();
/**
+----------------------------------------------------------
* 标签库是否有效
+----------------------------------------------------------
* @var string
* @access protected
+----------------------------------------------------------
*/
protected $valid = false;
/**
+----------------------------------------------------------
* 当前模板对象
+----------------------------------------------------------
* @var object
* @access protected
+----------------------------------------------------------
*/
protected $tpl;
protected $comparison = array(' nheq '=>' !== ',' heq '=>' === ',' neq '=>' != ',' eq '=>' == ',' egt '=>' >= ',' gt '=>' > ',' elt '=>' <= ',' lt '=>' < ');
/**
+----------------------------------------------------------
* 架构函数
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
*/
public function __construct()
{
$this->tagLib = strtolower(substr(get_class($this),6));
$this->tpl = Think::instance('ThinkTemplate');//ThinkTemplate::getInstance();
$this->_initialize();
$this->load();
}
// 初始化标签库的定义文件
public function _initialize() {
$this->xml = dirname(__FILE__).'/Tags/'.$this->tagLib.'.xml';
}
public function load() {
$xml_result = simplexml_load_file($this->xml);
if($xml_result)
{
$array = (array)($xml_result);
}
else
{
header("Content-Type:text/html; charset=utf-8");
echo "Xml编译出错，缓存生成失败，请刷新页面。";exit;
}
if($array !== false) {
$this->parse = $array;
$this->valid = true;
}else{
$this->valid = false;
}
}
/**
+----------------------------------------------------------
* 分析TagLib文件的信息是否有效
* 有效则转换成数组
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
* @param mixed $name 数据
* @param string $value 数据表名
+----------------------------------------------------------
* @return string
+----------------------------------------------------------
*/
public function valid()
{
return $this->valid;
}
/**
+----------------------------------------------------------
* 获取TagLib名称
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
* @return string
+----------------------------------------------------------
*/
public function getTagLib()
{
return $this->tagLib;
}
/**
+----------------------------------------------------------
* 获取Tag列表
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
* @return string
+----------------------------------------------------------
*/
public function getTagList()
{
if(empty($this->tagList)) {
$tags = $this->parse['tag'];
$list = array();
if(is_object($tags)) {
$list[] = array(
'name'=>$tags->name,
'content'=>$tags->bodycontent,
'nested'=>(!empty($tags->nested) && $tags->nested !='false') ?$tags->nested:0,
'attribute'=>isset($tags->attribute)?$tags->attribute:'',
);
if(isset($tags->alias)) {
$alias = explode(',',$tag->alias);
foreach ($alias as $tag){
$list[] = array(
'name'=>$tag,
'content'=>$tags->bodycontent,
'nested'=>(!empty($tags->nested) && $tags->nested != 'false') ?$tags->nested:0,
'attribute'=>isset($tags->attribute)?$tags->attribute:'',
);
}
}
}else{
foreach($tags as $tag) {
$tag = (array)$tag;
$list[] = array(
'name'=>$tag['name'],
'content'=>$tag['bodycontent'],
'nested'=>(!empty($tag['nested']) && $tag['nested'] != 'false' )?$tag['nested']:0,
'attribute'=>isset($tag['attribute'])?$tag['attribute']:'',
);
if(isset($tag['alias'])) {
$alias = explode(',',$tag['alias']);
foreach ($alias as $tag1){
$list[] = array(
'name'=>$tag1,
'content'=>$tag['bodycontent'],
'nested'=>(!empty($tag['nested']) && $tag['nested'] != 'false')?$tag['nested']:0,
'attribute'=>isset($tag['attribute'])?$tag['attribute']:'',
);
}
}
}
}
$this->tagList = $list;
}
return $this->tagList;
}
/**
+----------------------------------------------------------
* 获取某个Tag属性的信息
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
* @return string
+----------------------------------------------------------
*/
public function getTagAttrList($tagName)
{
static $_tagCache = array();
$_tagCacheId = md5($this->tagLib.$tagName);
if(isset($_tagCache[$_tagCacheId])) {
return $_tagCache[$_tagCacheId];
}
$list = array();
$tags = $this->parse['tag'];
foreach($tags as $tag) {
$tag = (array)$tag;
if( strtolower($tag['name']) == strtolower($tagName)) {
if(isset($tag['attribute'])) {
if(is_object($tag['attribute'])) {
// 只有一个属性
$attr = $tag['attribute'];
$list[] = array(
'name'=>$attr->name,
'required'=>$attr->required
);
}else{
// 存在多个属性
foreach($tag['attribute'] as $attr) {
$attr = (array)$attr;
$list[] = array(
'name'=>$attr['name'],
'required'=>$attr['required']
);
}
}
}
}
}
$_tagCache[$_tagCacheId] = $list;
return $list;
}
/**
+----------------------------------------------------------
* TagLib标签属性分析 返回标签属性数组
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
* @param string $tagStr 标签内容
+----------------------------------------------------------
* @return array
+----------------------------------------------------------
*/
public function parseXmlAttr($attr,$tag)
{
//XML解析安全过滤
$attr = str_replace('&','___', $attr);
$xml = '<tpl><tag '.$attr.' /></tpl>';
$xml = simplexml_load_string($xml);
if(!$xml) {
throw_exception(L('_XML_TAG_ERROR_').' : '.$attr);
}
$xml = (array)($xml->tag->attributes());
$array = array_change_key_case($xml['@attributes']);
$attrs = $this->getTagAttrList($tag);
foreach($attrs as $val) {
$name = strtolower($val['name']);
if( !isset($array[$name])) {
$array[$name] = '';
}else{
$array[$name] = str_replace('___','&',$array[$name]);
}
}
return $array;
}
/**
+----------------------------------------------------------
* 解析条件表达式
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
* @param string $condition 表达式标签内容
+----------------------------------------------------------
* @return array
+----------------------------------------------------------
*/
public function parseCondition($condition) {
$condition = str_ireplace(array_keys($this->comparison),array_values($this->comparison),$condition);
$condition = preg_replace('/\$(\w+):(\w+)\s/is','$\\1->\\2 ',$condition);
switch(strtolower(C('TMPL_VAR_IDENTIFY'))) {
case 'array': // 识别为数组
$condition = preg_replace('/\$(\w+)\.(\w+)\s/is','$\\1["\\2"] ',$condition);
break;
case 'obj': // 识别为对象
$condition = preg_replace('/\$(\w+)\.(\w+)\s/is','$\\1->\\2 ',$condition);
break;
default: // 自动判断数组或对象 只支持二维
$condition = preg_replace('/\$(\w+)\.(\w+)\s/is','(is_array($\\1)?$\\1["\\2"]:$\\1->\\2) ',$condition);
}
return $condition;
}
/**
+----------------------------------------------------------
* 自动识别构建变量
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
* @param string $name 变量描述
+----------------------------------------------------------
* @return string
+----------------------------------------------------------
*/
public function autoBuildVar($name) {
if('Think.' == substr($name,0,6)){
// 特殊变量
return $this->parseThinkVar($name);
}elseif(strpos($name,'.')) {
$vars = explode('.',$name);
$var = array_shift($vars);
switch(strtolower(C('TMPL_VAR_IDENTIFY'))) {
case 'array': // 识别为数组
$name = '$'.$var;
foreach ($vars as $key=>$val)
$name .= '["'.$val.'"]';
break;
case 'obj': // 识别为对象
$name = '$'.$var;
foreach ($vars as $key=>$val)
$name .= '->'.$val;
break;
default: // 自动判断数组或对象 只支持二维
$name = 'is_array($'.$var.')?$'.$var.'["'.$vars[0].'"]:$'.$var.'->'.$vars[0];
}
}elseif(strpos($name,':')){
// 额外的对象方式支持
$name = '$'.str_replace(':','->',$name);
}elseif(!defined($name)) {
$name = '$'.$name;
}
return $name;
}
/**
+----------------------------------------------------------
* 用于标签属性里面的特殊模板变量解析
* 格式 以 Think. 打头的变量属于特殊模板变量
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
* @param string $varStr 变量字符串
+----------------------------------------------------------
* @return string
+----------------------------------------------------------
*/
public function parseThinkVar($varStr){
$vars = explode('.',$varStr);
$vars[1] = strtoupper(trim($vars[1]));
$parseStr = '';
if(count($vars)>=3){
$vars[2] = trim($vars[2]);
switch($vars[1]){
case 'SERVER': $parseStr = '$_SERVER[\''.$vars[2].'\']';break;
case 'GET': $parseStr = '$_GET[\''.$vars[2].'\']';break;
case 'POST': $parseStr = '$_POST[\''.$vars[2].'\']';break;
case 'COOKIE': $parseStr = '$_COOKIE[\''.$vars[2].'\']';break;
case 'SESSION': $parseStr = '$_SESSION[\''.$vars[2].'\']';break;
case 'ENV': $parseStr = '$_ENV[\''.$vars[2].'\']';break;
case 'REQUEST': $parseStr = '$_REQUEST[\''.$vars[2].'\']';break;
case 'CONST': $parseStr = strtoupper($vars[2]);break;
case 'LANG': $parseStr = 'L("'.$vars[2].'")';break;
case 'CONFIG': $parseStr = 'C("'.$vars[2].'")';break;
}
}else if(count($vars)==2){
switch($vars[1]){
case 'NOW': $parseStr = "date('Y-m-d g:i a',time())";break;
case 'VERSION': $parseStr = 'THINK_VERSION';break;
case 'TEMPLATE':$parseStr = 'C("TMPL_FILE_NAME")';break;
case 'LDELIM': $parseStr = 'C("TMPL_L_DELIM")';break;
case 'RDELIM': $parseStr = 'C("TMPL_R_DELIM")';break;
default: if(defined($vars[1])) $parseStr = $vars[1];
}
}
return $parseStr;
}
}//类定义结束
?> 最佳答案
