#45 use "include_once" instead of "include" to include Scripts

[Thilo Wagner]

Something should be considered for phpCMS 1.2.1:

If php Scripts are included with {SCRIPT..} into a
page, they should be included via include_once instead
of include. Otherwise users will get in trouble, if
they try to use the same script more then once on a page.
There are 4 locations in class.realtime_phpcms.php
which must be modified.

I don't know if this has any impact in backwards
compatibility, but I think it doesn't.

ciao.. Iggi

[Bernhard Grün]

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If we do this than a simple script that only outputs a
'print "hello world";' can't be included more than once. I
think that we shouldn't change this.