Installation

In order to have these functions available, you
must compile PHP with msql support by using the –with-msql[=DIR] option. DIR is the
mSQL base install directory, defaults to /usr/local/msql3.

Note: Note to Win32
Users

In order for this extension to work, there are
DLL files that must
be available to the Windows system PATH.
For information on how to do this, see the FAQ entitled “How
do I add my PHP directory to the PATH on Windows“. Although
copying DLL files from the PHP folder into the Windows system
directory also works (because the system directory is by default in
the system’s PATH), this is not
recommended. This extension requires the
following files to be in the PATH:
msql.dll