Beefy Boxes and Bandwidth Generously Provided by pair Networks
good chemistry is complicated,
and a little bit messy -LW

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
As a neophyte it initially looks like the same reference is being sequentially updated with new substitutions and it'll simply end up with the last value.

well sort of. What happens is that all the occurances of the string %HTTP_HOST% will be replaced with whatever is returned from &handleEnvVariable('HTTP_HOST') in $_[0], and THEN all the occurances of the string '%REMOTE_ADDR%' will be replaced with whatever is returned by &handleEnvVariable('REMOTE_ADDR')... and so on. . .

So in each line the string is modified by substitutions if the pattern exists in the line.

It could be shortened down to:

$_[0] =~ s/% (HTTP_HOST| (?:REMOTE_ (?:ADDR|PORT|USER)) %/&handleEnvVariable($1)/gex;
You might want to take a look at perlop(Regexp Quote-Like Operators) and perlre for more info.


In reply to Re: What are multiple $_[0] =~ operations doing? by Enlil
in thread What are multiple $_[0] =~ operations doing? by Plotinus

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • 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
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            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?

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

    How do I use this? | Other CB clients
    Other Users?
    Others romping around the Monastery: (3)
    As of 2021-01-18 01:03 GMT
    Find Nodes?
      Voting Booth?