Beefy Boxes and Bandwidth Generously Provided by pair Networks RobOMonk
No such thing as a small change
 
PerlMonks  

How do I find the length of a string?

( #1971=categorized question: print w/ replies, xml ) Need Help??
Contributed by vroom on Jan 11, 2000 at 23:27 UTC
Q&A  > strings


Answer: How do I find the length of a string?
contributed by vroom

length($string) returns the number of characters in a string.

$foo = "quux"; $foolen = length $foo; # in this case, 4
Answer: How do I find the length of a string?
contributed by w-ber

Since Perl 5.6, Perl has had Unicode support, which manifests itself as UTF-8 encoded strings. If you want to find out how many characters a string has, simply use length($string). It just works.

However, if, for some reason, you need to find out how many bytes a string uses (which may be different from how many UTF-8 characters the string has):

use bytes; my $len = bytes::length($string);

Unless you know what you are doing, better steer clear of the latter. Use the former. (See perlunicode for more information.)

Please (register and) log in if you wish to add an answer



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others musing on the Monastery: (9)
    As of 2014-04-18 22:41 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      April first is:







      Results (472 votes), past polls