sql command

Could someone explain to me why sql commands work in php with pgsql? I have
a curious situation where the author used sql commands like sqlconnect to
access the database rather than pg-connect as well as other commands that
are either psql or sql - I'm a litle confused here. This is in a .conf file:
sqlconnect(array('server'=>'tester.videotron.ca','user'=>'mu m',
'database'=>'mum','password'=>'123456' ) );
I'm looking for the theory behind all this. :-)
Thanks
Phil Jourdan


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