title: XSLT - Checking for a substring
body: <p>I have two XSLT variables as given below:</p>
  
  <pre><code>&lt;xsl:variable name="staticBaseUrl" select="'https://www.hello.com/htapi/PrintApp.asmx/getGames?contentId=id_sudoku&amp;uniqueId="123456"&amp;pageformat=a4'" /&gt; 
  
  &lt;xsl:variable name="dynamicUrl" select="'https://www.hello.com/htapi/PrintApp.asmx/getGames'" /&gt; 
  </code></pre>
  
  <p>How to check whether the second string (dynamicUrl) is a substring of the first string (staticBaseUrl) or not?</p>