The driver requires PHP 5.5 or higher.
The driver requires » libbson and » libmongoc, and will use bundled versions of both libraries by default.
The driver requires » OpenSSL and will rely on PHP to find its headers (i.e. PHP_SETUP_OPENSSL). If the build process fails to find OpenSSL, check that the OpenSSL development package (e.g. libssl-dev) and » pkg-config are both installed.
Due to potential problems representing 64-bit integers on 32-bit platforms, users are advised to use 64-bit environments. When using a 32-bit platform, be aware that any 64-bit integer read from the database will be returned as a MongoDB\BSON\Int64 instance instead of a PHP integer type.
» Cyrus SASL is an optional dependency and will be used if available.