Why rawurldecode doesn't works?

Question

I have UTF-8 string(from DB), and when i run:

echo rawurldecode('S = ( a + b ) * ( a + b ) : 4');

as result i see:
'S = ( a + b ) * ( a + b ) : 4'

I can't to get full access to this project. What can be wrong?

Answer 1

Well, (, for example, is HTML entity syntax, and not URL entity syntax. %20% is an example of how space (ascii 32 == 0x20) gets encoded.