Warning: count(): Parameter must be an array or an object that implements Countable in /volume1/web/wikiGrade1/includes/api/ApiQueryBase.php on line 188 MediaWiki API Result
You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <exturlusage>
      <eu pageid="155" ns="0" title="Mediawiki 程式說明" url="http://www.mediawiki.org/wiki/Category:Extensions_by_category" />
      <eu pageid="155" ns="0" title="Mediawiki 程式說明" url="http://www.mediawiki.org/wiki/Extension:LinkedImage" />
      <eu pageid="155" ns="0" title="Mediawiki 程式說明" url="http://www.mediawiki.org/wiki/Extension:VideoFlash" />
      <eu pageid="2" ns="0" title="Mediawiki 安裝後首頁" url="//www.mediawiki.org/wiki/Manual:Configuration_settings" />
      <eu pageid="2" ns="0" title="Mediawiki 安裝後首頁" url="//www.mediawiki.org/wiki/Manual:FAQ" />
    </exturlusage>
  </query>
</api>