[Mediawiki-l] Getting started - echo type stuff disabled?

[Hugh Prior]

I downloaded and installed Mediawiki 1.5.5 a few days ago, and have been 
having a look.  I have pretty good experience in PHP, but it's my first look 
at Mediawiki.


One of the biggest things I have noticed is:

a)       echo, doesn't

b)       if I try and create my own "test_wiki.php" file calling wiki 
functions/methods, I get I think errors but all that is displayed on the 
screen is a complete blank


I suppose these things are basically the same thing.  Is "echo" disabled? 
Is there some other global setting I haven't seen which is stopping output 
to the screen?  Is there some magic constant that I have to set to get debug 
output (I have found $wgDebugLogFile, $wgDebugRedirects, $wgDebugRawPage, 
$wgDebugComments, $wgReadOnly, $wgLogQueries, $wgDebugDumpSql but they don't 
seem to help much).


Thanks for any help.





Hugh Prior