Some WordPress functions outputs character entity references. The most of these are not allowed in XHTML. So if your WordPress installation uses the mime type 'application/xhtml+xml', the generated sites could have invalid xhtml code and the browser would display the syntax error page.
Convertentity converts all entity references into their corresponding characters with the exception of the references for the following characters: '<>&"
These references are the only ones which are allowed in XHTML.
安装:
Upload convertentity.php to the /wp-content/plugins/ directory
Activate the plugin through the 'Plugins' menu in WordPress