The path where PHP looks for its php.ini file is built into PHP on compile time. To find out that path, use a PHP script that does a phpinfo() call. This will display a

e table of all of PHP's configuration variables. The path to php.ini can be found in the first part of that table, near the start of the page.
Geeklog ships with a phpinfo script in /path/to/geeklog/admin/install/info.php. Or you can simply create a new file (name it "phpinfo.php", for example) that contains the single line
<?php phpinfo(); ?>
Upload that file anywhere on your website and call it up in your browser.
Harish Rawat
CoreItDevelopers
