At 22:13 13.03.2003, Liam Gibbs said:
--------------------[snip]--------------------
>I know that in a case like this
>
>if((test1) && (test2) && (test3)) {
> ...
>}
>
>if test1 fails, dear PHP won't bother doing test2 and 3. Am I correct? Is
>there a syntax that will make it carry on with test2 and 3 anyway,
>regardless of how test1 came out?
--------------------[snip]--------------------
The rule for AND chains is:
- evaluate the expressions from left to right
- stop AND DON'T RUN THE IF-BLOCK at the first expression evaluating to false
The rule for OR chains is:
- evaluate the expressions from left to right
- stop AND RUN THE IF-BLOCK at the first expression evaluating to true
This feature is inherent to all (well, most at least) languages - so be
aware of side effects (or no side effects occurring) with such constructs.
To allow _all_ expressions to be evaluated you need to run all 3 by
themselves, later comparing the results:
$x1 = test1();
$x2 = test2();
$x3 = test3();
if ($x1 && $x2 && $x3) ...
--
>O Ernest E. Vogelsinger
(\) ICQ #13394035
^ http://www.vogelsinger.at/
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