Have you read perlretut yet? You've got to get through some of that stuff if you want to move forward.

. is a special metacharacter inside of Perl regular expressions. It means to match anything except for newline.

Character classes match only a single character unless you add a quantifier.

Alternation is constrained to the entire regular expression, or the first enclosing ( ... ) or (?: ... ) construct.

Case insensitivity applies to character classes too.

Combine those issues, and what you have is:

m/
      www     # match literal 'www'
      .       # match any single character except \n.
      [a-z]   # match any single character between a and z.
  |           # OR
      [A-Z]   # match any single character between A and Z.
      .       # match any single character except \n.
      [a-z]   # match any single character between a and z.
/ix           # /i makes everything case-insensitive, so there's
              # no difference between [A-Z] and [a-z].

[download]

If you want to accomplish this without learning regular expressions, install the URI::Find distribution, and use its URI::Find::Schemeless module.


Dave

In reply to Re: how to do match www.jkghfdjbh.org from $li? by davido
in thread how to do match www.jkghfdjbh.org from $li? by virudinesh

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