Download the English version of the PHP help file, in Windows CHM format.  There's a section that's missing its component functions, although they appear in the section header page.  Here are the details:

Click on [contents] tab.
Expand the [function reference].
Expand the [shared memory functions].

You'll see that only "shmop_size" appears as a child, even
though the page description (table of contents section) shows open/read/write/size/delete/close.  For some reason,
the other functions have been forgotten.

Thanks, fellas!
Lew Payne