My webhost runs on PHP4 and does not understand files with the «.php3» extensions

In most cases, to ensure backward compatibility, servers running PHP4 are configured to also process files with «.php3» extensions. However, if that is not the case (eg: your browser displaying the source code or not recognising the file format), please ask your service provider to remedy the situation.

Karl recommends this for those running their own servers: If you have access to httpd.conf and have compiled PHP4, modify your httpd.conf as follows: