×
INTELLIGENT WORK FORUMS
FOR COMPUTER PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

exists error

exists error

exists error

(OP)
i get an error with this code:

if (exists param('name')){
    }else{
}

it says that the condition in exists may be a hash, but it isnt. and this works:

$name=param('name');

so why doesnt the is statement?



~Tony

RE: exists error

'exists' checks to see if a hash's key exists.
 Use 'defined' to check if something else exists.

if (defined param('name')){
    }else{
}

"If you think you're too small to make a difference, try spending a night in a closed tent with a mosquito."

RE: exists error

Unless null and/or 0 and/or '0' are valid values, it's easier just to say:

if ( $param{'name'} )

It the variable has any value other than null, zero or '0' it will be true.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members! Already a Member? Login


Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close