Looking for advice (perl or just generic approach) to programmatically find duplicated blocks of code across 40 or so php script files, so i can then manually refactor these code chunks that i know do exist. It's not doable manually as we're talking 55k+ lines of code total. The copy/pasted bits of duplicate code are not identified with any function or class structure, i.e. pure procedural code someone else wrote. that's unfortunatelly how the dev on this occured before my work with it starting. author is available but it's also beyond his ability (or anyone's) to now manually unravel the duplication by hand.
the hardest line to type correctly is: stty erase ^H

In reply to general advice finding duplicate code by aquarium

Title:
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, details, 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, summary, 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.