I found solution
The problem was due to OS X 10.11 El Capitan's Rootless feature. To be able to install the extension into /usr/lib/php/* I had to temporarily disable the feature (instructions - please remember to re-enable it afterwards).
after do that I need to recompile cassandra driver with following commands:
git clone https://github.com/datastax/php-driver.git
cd php-driver
git submodule update --init
cd ext
./install.sh
phpize
./configure
make install
All dependencies We must install before compiling cassandra php driver:
brew install gmp
brew install libuv
brew install cmake
sudo chown -R $USER /usr/local
brew link cmake
brew unlink openssl && brew link openssl --force
brew install autoconf
brew install icu4c
pecl update-channels
brew link icu4c --force
pecl install intl
brew install pcre