Wamp Server is Not loading Postgres server Extensions php_pgsql.dll and php_pdo_pgsql.dll

It is not enough to uncomment the  relative lines in the php configuration file on Windows but Also you have to add this line to the Apache Server configuration file :

LoadFile "C:/wamp/bin/pgsql/pgsql9.2.41/bin/libpq.dll"

Change the Path to suite your configuration .