Using IF to check multiple conditions?

[Kenny100]

Hi Folks

I've got a variable in my Perl script called $config. I want to ensure that it's value is equal to either 1, 2, or 3. What I'd really like to do is this:

IF $config IS NOT EQUAL TO 1, 2 OR 3
print "Variable is not valid!";

I can't seem to figure out a way to do this in two lines though. The best I can manage is:

if ($config == 1) {
print "Variable is equal to 1";
} elsif ($config == 2) {
print "Variable is equal to 2";
} elsif ($config == 3) {
print "Variable is equal to 3";
} else {
print "Variable is not valid!";
}

Is there any other way I can do this or is my code above the best solution?

Cheers,
Kenny.

 

[icrf]

You can use the logical 'and' operator && to combine conditionals. Use || for 'or'.

if($config != 1 && $config != 2 && $config != 3)
{
  print "Variable is not valid!";
}

----------------------------------------------------------------------------------
...but I'm just a C man trying to see the light

 

[justice41]

Another way to check is:

if ( $config =~ /^[123]$/ ) {

jaa

 

[Kenny100]

Thanks guys - very helpful