On 18 Sep 98, at 10:33, Jack Killpatrick wrote:
> > I think that everyone who uses perl extensivley ought to move to
> > mod_perl or an equivalent. But it is a different piece of cake.
>
> I haven't tried mod_perl yet, but believed the "advertising" stating that I
> could use any "well-written" code. From your first experience, what's
> different (from the code writing point of view)?
This is going to get complicated and expose my superficial
understanding of programming -- so don't anyone hesitate to jump in
with corrections etc.
I don't understand the difference, in perl, of using:
my ($var1,$var2,$var3);
vs.
use vars qw ($var1 $var2 $var3)
other than the obvious. I would assume no difference. But you have
to be very careful about global variables. And the question of
scope. As your script never ENDS those variables might/can hang
around forever.
I was finding that the script would keep an old value. I would enter
a search term, click and search and then enter another search term,
click and lo and behold the old search was returned. I am also
running the Apache::DBI module.
My scripts were written using strict .... and I did some searching
and discovered that I might want to use "require CGI.pm" rather than
"use CGI.pm" owing to .....
Looks like you have to be careful with the other files you require
etc.
I have a lot more to learn about this. I don't think it is as simple
as stated. For one thing all the instructions suggest creating a new
directory for your mod_perl scripts --- if it were so simple why
create the new directory? And if you don't use "use strict" or
localize variables then ..... could be trouble.
But I think this is a must go direction. Anyone else?
Peter
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