how to compare null string

[happyse27]

Hi all,

I did the null string comparison for below...

But could not work as i keyed some value into the $company field but it did not print out okok, but not ok. I used if ($company != '') also did not help...

Can you kindly advise?


Cheers...
Andrew

if ($company != "" )
{
 
  print "okok \n";
}
else
{
 
  print "Not ok \n";
}
 

[happyse27]

Hi all,

I used eq as it is string.. but still didnt work..

Cheers...
Andrew

if ($company eq "" )
{
 
  print "okok \n";
}
else
{
 
  print "Not ok \n";
}
 

[happyse27]

Hi all,

Any advise..?


Cheers...
Andrew

[KevinADC]

Use "ne" instead of "!=". There are string operators and math operators, use the correct ones depending on what you are trying to compare.

[KevinADC]

see below...

[KevinADC]

@happyse27
Andrew, this is not tech support. You're asking after 5 minutes if anyone can advise after posting your last question. You need to be more patient than that.

[happyse27]

ok. sorry...

can kindly assist Sirs?

[KevinADC]

I already did, I advised you to use "ne" instead of "!=".

[Ganon11]

You can also simply use $company, since the null string is a FALSE value:

if ($company) {
   print "It's not null.\n";
} else {
   print "It's null.\n";
}

[KevinADC]

@Ganon11
Good observation. But thats also true if $company is equal to 0 which perl considers a false value:

$company = 0;

something for the unwary to keep in mind.

[happyse27]

Thanks Sirs... It worked... Cheers...

[happyse27]

Hi Moderator,

Why I am not allow to post new thread? What rules did I violate? And I wasnt intentional... Not even a chance can be given?

Regards,
Andrew

[KevinADC]

This website has been undergoing a lot of changes lately and if you can't post a new thread is probably something to do with the changes. Try again.

[Ganon11]

happyse27,

Just to reiterate what KevinADC said, I don't think you've done anything to warrant any sort of 'posting ban'. It was likely an error due to our changing interface. Please try again.

[happyse27]

Thanks Again. Sirs.. Appreciated...
Really needed help...

Btw, how to get above country / province modules, it is to register username and passwords and also the country, the state(province) for the people who serve, country::locale seemed to be incomplete.


Cheers...
Andrew