fatal error call to undefined function svn_log()
<p>How to retrieve commit messages using php. Now i am using this code but it's giving error </p>

<blockquote>
  <p>fatal error call to undefined function svn_log()</p>
</blockquote>

<pre><code>&lt;?php

echo "&lt;pre&gt;";
print_r( svn_log('http://10.1.1.100:8080/svn/repos/php/', svn::HEAD) );

?&gt;
</code></pre>