COM is a technology which allows the reuse of code
written in any language (by any language) using a
standard calling convention and hiding behind APIs the
implementation details such as what machine the
Component is stored on and the executable which houses
it. It can be thought of as a super Remote Procedure
Call (RPC) mechanism with some basic object roots. It
separates implementation from interface.
COM encourages versioning, separation of
implementation from interface and hiding the
implementation details such as executable location and
the language it was written in.
這些函數是PHP核心的一部分,不需要安裝就可使用。
The windows version of PHP
has built in support for this extension. You do not
need to load any additional extension in order to use
these functions.
php.ini中的設定會影響這些函數的行為。
表格 1. Com configuration options
以下的常數由此延伸定義, 只在這個延伸被編譯成PHP或實行時期被動態載入時有效。
For further information on COM read the COM specification or perhaps take a
look at Don Box's Yet Another COM Library (YACL)