I have added following lines into php.ini
[XDebug] zend_extension = C:\\PROGRA~1\\PHP5\\ext\\php_xdebug-2.1.0-5.3-vc9.dll xdebug.remote_enable=on xdebug.remo
check the top of the output of
php -m
for me it showed an error in php.ini, after solving that xdebug was loaded.