Your Task

Write a program using ASCII characters. Five alphanumeric (0-9, A-Z, a-z) characters will be inserted at random into your program's source code. Your task is to detect and output these characters inserted into your program.


  • Your code cannot use any form of backup file.
  • Your code may produce any unnecessary error messages, provided these are distinguishable from the actual output.
  • The output may be on the screen or into a file.
  • The output may also contain unnecessary characters, but no extra alphanumeric characters (excluding error messages).


The post with the largest vote count wins.


closed as unclear what you're asking by Blue, Mego, intrepidcoder, Alex A. Nov 10 '15 at 20:56

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • 7
    \$\begingroup\$ I'm confused about why the folder is relevant. Is this challenge the same as "Write a string so that when any five character are added in arbitrary positions, and the result is run as code, it prints those characters"? \$\endgroup\$ – xnor Nov 10 '15 at 9:31
  • 2
    \$\begingroup\$ Hahaha. I hope this post doesn't get investigated for unintentional obscene language. I understand the word urbandictionary.com/define.php?term=bugger isn't used much in the USA. It was the line before "conditions" that made me LOL \$\endgroup\$ – Level River St Nov 10 '15 at 10:05
  • \$\begingroup\$ @xnor Yes, it is the same. I just wanted to say that the file cannot access a backup of itself. \$\endgroup\$ – ghosts_in_the_code Nov 10 '15 at 11:09
  • \$\begingroup\$ @steveverrill It was unintentional. I've edited. \$\endgroup\$ – ghosts_in_the_code Nov 10 '15 at 11:09
  • \$\begingroup\$ @wizzwizz4, are you sure that your edit is not an other question? \$\endgroup\$ – Qwertiy Dec 15 '15 at 20:28

PHP, 0 bytes

PHP will simply echo the source until it sees an opening code tag <?.

  • 4
    \$\begingroup\$ Why the downvotes? Are you insulted because this is not a Pyth, CJam whatever answer? Feersum has used one of the right languages for the task in question. (+ it is heavily golfed) +1 \$\endgroup\$ – Stephan Schinkel Nov 10 '15 at 9:58
  • 3
    \$\begingroup\$ I downvoted because this is a popularity contest and while you use a language feature appropriately, I would rather see smart code written by a user than just "hey it works as is with php". \$\endgroup\$ – Aaron Nov 10 '15 at 10:31
  • \$\begingroup\$ lmoa i like this place ! \$\endgroup\$ – Abr001am Nov 10 '15 at 10:44
  • \$\begingroup\$ @Aaron ah ok i see sorry. Thought it was code-golf. \$\endgroup\$ – Stephan Schinkel Nov 10 '15 at 13:44
  • \$\begingroup\$ @StephanSchinkel you don't have to be sorry, popularity-contest are by nature opinion-based and feersum's answer has its merits. They were just not up to my expectations ! \$\endgroup\$ – Aaron Nov 10 '15 at 13:55

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