Call to undefined function svn_auth_set_parameter() in php

While I trying connect svn using php svn package in windows xampp and I got the below error.

Uncaught Error: Call to undefined function svn_auth_set_parameter()

I have followed https://www.php.net/manual/en/svn.installation.php manual and installed svn module in php and enabled extension=php_svn in php.ini file.

Here the sample code I have used

svn_auth_set_parameter(SVN_AUTH_PARAM_DEFAULT_USERNAME, 'my username');
svn_auth_set_parameter(SVN_AUTH_PARAM_DEFAULT_PASSWORD, 'password');