Question

But why?

if ('i' == 'і')
    echo 'good';
else
    echo 'bad';  

echos:

>> bad

You should copy this snippet. If you write it by hand, it will work.
It drives me crazy.

Answer 1

You are sneaky! The second I is not a lower case latin small i. I hexdumped it:

hexdump -C check
00000000  69 66 20 28 27 69 27 20  3d 3d 20 27 d1 96 27 29  |if ('i' == '..')|
00000010  0a 20 20 20 20 65 63 68  6f 20 27 67 6f 6f 64 27  |.    echo 'good'|
00000020  3b 0a 65 6c 73 65 0a 20  20 20 20 65 63 68 6f 20  |;.else.    echo |
00000030  27 62 61 64 27 3b 20 20  0a 0a                    |'bad';  ..|
0000003a

I’ll let you look up D1 96 🙂 Awesome tricksy riddle. +1