This works for me:
cd /usr/local/lsws
unzip ~/mongo-php-driver-master.zip
cd mongo-php-driver-master
chmod +x /usr/local/lsws/phpbuild/php-5.3.28/scripts/*
/usr/local/lsws/phpbuild/php-5.3.28/scripts/phpize
./configure --with-php-config=/usr/local/lsws/phpbuild/php-5.3.28/scripts/php-config...