Question

刚刚使用最新的Custom Contact Forms更新了WordPress网站。更新后，网站不再加载，我看到这些错误：

[27-Jun-2015 06:01:05 UTC] PHP Warning:  SimpleXMLElement::__construct(): Entity: line 130: parser error : Opening and ending tag mismatch: wphead line 1 and script in /storage/web/public/sites/www.site.nl/wp-content/themes/site/vihv/control/TControl.php on line 91
[27-Jun-2015 06:01:05 UTC] PHP Warning:  SimpleXMLElement::__construct(): &lt;/script&gt; in /storage/web/public/sites/www.site.nl/wp-content/themes/site/vihv/control/TControl.php on line 91
[27-Jun-2015 06:01:05 UTC] PHP Warning:  SimpleXMLElement::__construct():          ^ in /storage/web/public/sites/www.site.nl/wp-content/themes/site/vihv/control/TControl.php on line 91
[27-Jun-2015 06:01:05 UTC] PHP Warning:  SimpleXMLElement::__construct(): Entity: line 148: parser error : Sequence ']]&gt;' not allowed in content in /storage/web/public/sites/www.site.nl/wp-content/themes/site/vihv/control/TControl.php on line 91

第一个错误是指这个函数：

function GetXml() {
            try {
                $Xml = new SimpleXmlElement(TXml::MakeTree($this->GetData(), get_class($this)));
                return $Xml->asXml();
            } catch(Exception $e) {
                //print_r($this->GetData());
            }
        return "<".get_class($this)."/>";
        }

但这些错误只是PHP警告，而不是致命错误。但无论如何我都会看到死亡的白屏。

我不熟悉XML和XML解析。主题由第三方开发者创建，至今尚未与他联系。自这个主题创建以来已经有一段时间了。我取消了print_r的注释，看看会显示什么，所有内容都打印出来，第一个数组出现了：

Array ( [THeadControl] => Array ( [wphead] => ]]> [template_url] => http://www.site.nl/wp-content/themes/site [title] => ) [TLeftBlockContainer] => Array ( [THeaderControl] => Array ( [siteurl] => http://www.site.nl [siteTitle] => VERLOSKUNDIGENPRAKTIJK site [headpic] => http://www.site.nl/wp-content/uploads/2015/02/siteheader2.jpg [logoPhone] => http://www.site.nl/wp-content/themes/site/img/logo-phone.png ) [TSimpleMenuControl] => Array ( [menu] =>

在第130行，我看到了

<script type='text/javascript' src='http://www.site.nl/wp-includes/js/underscore.min.js?ver=1.6.0'></script>

我怀疑该插件会在标头中添加一些内容，导致html标记错误/创建无效的XML。

更新这里添加了__construct（）方法，如@danbahrami

所示

function __construct() {
        $Manager = TEventManager::getInstance();
        $Manager->AddListener($this);
        $this->SetEvent('OnGet', array($this,'OnGetEvent'));
        $this->SetEvent('OnPost', array($this,'OnPostEvent'));
        $this->SetEvent('OnDisplay', array($this,'OnDisplayEvent'));
        $this->SetEvent('OnBeforeDisplay', array($this,'OnBeforeDisplayEvent'));
        $this->SetEvent('OnEnable', array($this,'OnEnableEvent'));
        $this->SetEvent('OnDisable', array($this,'OnDisableEvent'));
        $this->SetEvent('OnCreate', array($this,'OnCreateEvent'));
        $this->SetEvent('OnRootTemplateLoad', array($this,'OnRootTemplateLoadEvent'));
        $this->SetEvent('OnDefaultPage', array($this,'OnDefaultPageEvent'));
        $this->OnCreate($this);
        }

可以看到整个文件TControl.php here。我该如何调试此错误？是否可以绕过错误？

Answer 1

自定义联系表单在CDATA标记中添加了一个JavaScript，注释掉/* <![CDATA[ */和/* ]]> */。还有一个子弹粘贴为•，这扼杀了XML Parser。似乎解析器不喜欢CDATA以这种方式注释掉。为了调试，我得到了另一位使用

的开发人员的帮助

print("<pre>");
var_dump($this->GetData());
libxml_use_internal_errors(true);
echo 'Caught exception: ', $e->getMessage(), "\n";
print($xml);
die();

但为了测试它，他从输出中复制了xml，保存到文件并通过单独的脚本检查出来：

$xml = file_get_contents("qqq.xml");
$xml = str_replace("", "X", $xml);
$xml = preg_replace("@/\*.*\*/@", "", $xml);
$rr = simplexml_load_string($xml);
var_dump($rr);

如果一切正常，哪些打印错误或XML。使用调整后的TConfig函数

$xml = $TXml->MakeTree($this->GetData(), get_class($this));
#$xml = str_replace("", "-", $xml);
#$xml = preg_replace("@/\*.*\*/@", "", $xml);
$xml = preg_replace("@/\*.*\*/@", "<!-- commented out -->", $xml);
                $Xml = new SimpleXmlElement($xml);
                return $Xml->asXml();
            } catch(Exception $e) {
print("<pre>");
var_dump($this->GetData());
libxml_use_internal_errors(true);
echo 'Caught exception: ',  $e->getMessage(), "\n";
print($xml);
die();

一切都在恢复。 Preg replace用于删除有问题的CDATA代码。稍后会看到它是否可以在没有/**/的情况下停留。

SimpleXmlElement解析错误

1 个答案: