After installing WAMP the PC was still running at normal speed with WAMP running but whenever we tried to access a simple website we had set up there was a 4 or 5 second lag before the page was displayed.

We were using a simple html file to test it with so that ruled out there being a problem with PHP or MySQL in WAMP so it was just Apache that were were finding slow to access – either locally or through the other Windows 7 PC.

I thought it may be Windows firewall and when I shut the firewall down then requests to Apache speeded up to normal speed. Obviously running with the firewall down isn’t ideal so I thought it might be related to a problem I had using localhost on Vista.

Eventually I found disabling IPv6 on the WAMP PC’s network adapter fixed the problems. We don’t need to run IPv6 and running both IPv4 and IPv6 along with Windows firewall and Apache must cause a bottleneck somewhere.

We had a PHP/MySQL website which worked fine on the production server but on the testing server running WAMP (Windows-Apache-MySQL-PHP) certain dynamic pages gave us this error:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ” at line 1

We double checked the code and everything looked fine so figured it must be a PHP/MySQL setting on the WAMP server.

Solution:

Seems that register_long_arrays was not enabled in the PHP settings on the WAMP server. As soon as we enabled them it worked perfectly.