On 18 May 2010 12:35, Andre Polykanine <an...@oire.org> wrote:
> Hello Peter,
> Hm... I see I need to specify what I'm really doing. Actually, I need
> to change the letters in the text. It's a famous and ancient crypting
> method: you divide the alphabet making two parts, then you change the
> letters of one part with letters for other part (so A becomes N, B
> becomes O, etc., and vice versa). it works fine and slightly with
> strtr or str_replace... but only if the text is not in utf-8 and it
> doesn't contain any non-English letters such as Cyrillic what I need.
> What my regex does is the following: it sees an A, well it changes it
> to N; then it goes through the string and sees an N... what does it
> do? Surely, it changes it back to A! I hoped (in vain) that there
> exists a modifier preventing this behavior... but it seems that it's
> false(
> Thanks!

Hmmm, what comes to mind is using your string as an array and
translating one character after another, building your output string
using a lookup table. Not entirely sure how that will play with utf8
characters, you'd have to try and see.
 I don't think you'll get any of PHPs string functions to do the work
for you - they'll do the job in serial, not parallel.


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