&reftitle.install; short installation note: You need at least PHP 4.3. for the compression to work To install on PHP 4.3 and later at the unix command prompt type pear install bcompiler To install on Windows, until the binary package distribution mechanism is finished please search the archives of the pear-general mailing list for pre-built packages. (or send an email to it if you could not find a reference) To install on older versions you need to make some slight changes to the build. untar the bcompiler.tgz archive into php4/ext.(Get it directly from PECL &url.pecl.package.get;bcompiler) If the new directory is now called something like bcompiler-0.x, then you should rename it to bcompiler (except you only want to build it as self-contained php-module). If you are using versions before PHP 4.3, the you will need to copy the Makefile.in.old to Makefile.in and config.m4.old to config.m4. run phpize in ext/bcompiler run ./buildconf in php4 run configure with --enable-bcompiler (and your other options) make; make install that's it.