wget http://ftp.sunet.se/pub/gnu/gmp/gmp-4.2.2.tar.bz2 tar -xjvf gmp-4.2.2.tar.bz2 cd gmp-4.2.2 ./configure make make check make install vi /var/cpanel/easy/apache/rawopts/all_php5 add --with-gmp to this file and recompile php with default settings /scripts/easyapache save and compile.