exit() function 1

[thendal]

What is the command to break out of the present if statement or for loop, etc. I've tried 'exit' but it exits the whole program.

 

[vcherubini]

You can use something like a next if statement.

The syntax would be

[tt]next if (some statement) {
# what ever you want to happen

}

[/tt]

So say if you have a for loop that says:

[tt]for ($i=0;$i<40;$i++) {

# do something
# but say that if you need to exit before it gets to 39, then you write:

next if ($i=20) {

&somesub;

}

}

[/tt] so it goes to somesub if $i equals 20.

Hope this helps.

-Vic

 

[MikeLacey]

works like this:
[tt]
while(1){ # loop forever in other words
$i ++;
next if $i < 3; # jumps back to 'while',
last if $i == 3; # jumps out of 'while' loop
}
[/tt]
would work the same without the 'next if' line -- just wanted to show what it does

 

[thendal]

Thank you very much mike and vik.It worked fine.

 

[sojan]

hello vikter,
here is some loop control constructs which will be very useful to u
last - stop the execution of the loop,and continues with
the next statement after the loop (like break in C)
next - Stops the current iteration of the loop , goes back
to the top and starts continues with the next value
of the loop index variable( in for loop).
it is very useful method (like continue in C )
redo - Stops the current execution and goes to the top and
&quot;restart&quot; the loop revaluating the test .