The three SDO components - the SDO core, the XML DAS and the
Relational DAS - are packaged together with Service Component
Architecture (SCA) into one PECL project, SCA_SDO, so you can
download SCA and all three parts of SDO with the command:
This command will build the SDO shared library as well as
installing the PHP files that make up SCA and the SDO
Relational DAS.
pecl install SCA_SDO-beta