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Re: terminate a PHP script [message #172594 is a reply to message #172591] Tue, 22 February 2011 02:09 Go to previous messageGo to previous message
Jerry Stuckle is currently offline  Jerry Stuckle
Messages: 2598
Registered: September 2010
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On 2/21/2011 9:04 PM, sheldonlg wrote:
> On 2/21/2011 8:24 PM, The Natural Philosopher wrote:
>> sheldonlg wrote:
>>> On 2/21/2011 1:54 PM, n00m wrote:
>>>>
>>>> > Again, why not if-then-else?
>>>>
>>>> what if it's 10 nested for() stmts?
>>>> And you need to break out of ALL for()'s from the innermost for()?
>>>> Do you like 10 if-then-else conditionals, 1 per each for()?
>>>
>>> && !$exit_all
>>>
>>> in each of the test conditions of the for loop where $exit_all is
>>> initially FALSE outside the outermost loop.
>>>
>>> for ($i1=0, $exit_all=FALSE; $i1 < $i1_end && !$exit_all; $i1++) {
>>> for ($i2=0; $i2 < $i2_end && !$exit_allt; $i2++) {
>>> ..... // and so on
>>> if ($some_condition == TRUE) {
>>> $exit_all = TRUE;
>>> break; // or continue which does one extra check step
>>> }
>>> }
>>> }
>>>
>>>
>>>
>> I didn't understand a word of that. ;-)
>
> I don't understand why? It is clear as a bell.
>
>> AND you used a BREAK. hanging is too good...
>
> A break is not a goto. Far from it. A break says "stop processing _this_
> particular loop/test". Its scope is _clearly defined_. It resumes
> immediately after that loop/test. That is nothing like a goto which is
> an unconditional branch to ANYWHERE in the code. (Also, try writing a
> switch statement without a break.)
>
> But, if you don't like break here, just leave it out. As it turns out,
> in my example the way I wrote it, it is not needed since it is being
> tested in the while condition of the loop. It will exit the loop anyway.
> The only real reason to have the break in the if test is if there were
> some lines of code within that loop after the test.
>

Forget it, Shelly - TNP can't tell the difference between a break (or an
if/then/else, for that matter) and a goto.

--
==================
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Jerry Stuckle
JDS Computer Training Corp.
jstucklex(at)attglobal(dot)net
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