# com_load_typelib

(PHP 4 >= 4.1.0, PHP 5, PHP 7)

com_load_typelib — 装载一个 Typelib

### 说明

com_load_typelib ( string `$typelib_name` [, bool `$case_insensitive` = true ] ) : bool

Loads a type-library and registers its constants in the engine, as though they were defined using define().

Note that it is much more efficient to use the configuration setting to pre-load and register the constants, although not so flexible.

If you have turned on , then PHP will attempt to automatically register the constants associated with a COM object when you instantiate it. This depends on the interfaces provided by the COM object itself, and may not always be possible.

### 参数

`typelib_name`

  `typelib_name` can be one of the following:

  - The filename of a .tlb file or the executable module that contains the type library.

  - The type library GUID, followed by its version number, for example {00000200-0000-0010-8000-00AA006D2EA4},2,0.

  - The type library name, e.g. Microsoft OLE DB ActiveX Data Objects 1.0 Library.

  PHP will attempt to resolve the type library in this order, as the process gets more and more expensive as you progress down the list; searching for the type library by name is handled by physically enumerating the registry until we find a match.
`case_insensitive`

  The `case_insensitive` behaves in the same way as the parameter with the same name in the define() function.

### 返回值

成功时返回 `TRUE`， 或者在失败时返回 `FALSE`。