in reply to Re^6: Tweak for my Perl Regex that screens for digits only
in thread Tweak for my Perl Regex that screens for digits only

You wouldn't use substr to generate an err msg. You'd check length of whatever variable shouldn't be too long, and if it exceeded your limit, you'd have the program die or just not call the code that inserts the information into your data store, and generate a page that informs the user that the data they entered was rejected. 
if (length($var) > 30) {
  # Generate rejection message
}
else {
  # Insert data
  # Generate success message
}

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Re^8: check length of field
by hackermike (Novice) on Jan 26, 2006 at 18:56 UTC
    THANKS ROY!
    You've stated what I meant to say in my wish to force the user to enter only up to some char limit with perl and the code you wrote slips in to my existing "format" of error checking and error (page) generation.

    The code you supplied is exactly what I need for ALL of my forms providing customized data input printed to web pages such as listing events and sent by eMail where field lenght needs to be within limits for formatting or spam containment/resistance or to just enforce brevity on users.
    Thanks again!
    Gratefully,
    Mike
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