I use ngnix with php-fpm. On accessing the site, i get

http://images.photohost.in/index.php

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The page you are looking for is temporarily unavailable.
Please try again later.
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phpinfo is working

http://images.photohost.in/phpinfo.php

I found the reason for the error. It is line

$db = mysql_connect("74.86.200.34", $db_username, $db_password);

If i commented out the line, it works. It look like time out issue as
database is on a different server. I increased execution time in
php.ini, do not fixed it.