Hai cercato la traduzione di power of unity da Coreano a Inglese

power of unity
power of unity

세제곱x to the power of y
third power

x의 y제곱x to the power of 1/ y
x to the power of y

10을 밑으로 하는 로그10 to the power of x
logarithm to base 10

note that if you don't require the power of regular expressions, it is faster to use explode(), which doesn't incur the overhead of the regular expression engine.
for users looking for a way to emulate perl' s @chars = split('', $str) behaviour, please see the examples for preg_split().

the power of regular expressions comes from the ability to include alternatives and repetitions in the pat- tern. these are encoded in the pattern by the use of meta - characters, which do not stand for themselves but instead are interpreted in some special way.
the difference between \z and \z is that \z matches before a newline that is the last character of the string as well as at the end of the string, whereas \z matches only at the end.