Unable to load dynamic library in httpd-error.log

From the httpd-error.log:

[Wed Mar 19 05:40:16 2008] [warn] Init: Session Cache is not
configured
[hint: SSLSessionCache]

PHP Warning:  PHP Startup: Unable to load dynamic library
'/usr/local/lib/php/20060613/json.so' - Cannot open
"/usr/local/lib/php/20060613/json.so" in
Unknown on line 0

PHP Warning:  PHP Startup: Unable to load dynamic library
'/usr/local/lib/php/20060613/hash.so' - Cannot open
"/usr/local/lib/php/20060613/hash.so" in
Unknown on line 0

PHP Warning:  PHP Startup: Unable to load dynamic library
'/usr/local/lib/php/20060613/filter.so' - Cannot open
"/usr/local/lib/php/20060613/filter.so" in
Unknown on line 0

[Wed Mar 19 05:40:24 2008] [notice] Digest: generating
secret for
digest authentication ...

[Wed Mar 19 05:40:24 2008] [notice] Digest: done

[Wed Mar 19 05:40:25 2008] [notice] Apache/2.2.8 (FreeBSD)
mod_ssl/2.2.8 OpenSSL/0.9.7e-p1 DAV/2 PHP/5.2.5 with
Suhosin-Patch
configured -- resuming normal operations


The three files mentioned above are all available in the
'/usr/local/lib/php/20060613-debug' directory. Should I be
modifying a
config file or something, or is this just a harmless error
message?


-- 
Gerard
gerardseibercom.net

An adequate bootstrap is a contradiction in terms.