apache server reference (1)_PHP tutorial

Preface
This manual is a document for version 1.0 of the Apache HTTP server. This
server is a product of the Apache Project, which attempted to respond to some concerns about actively developing a set of HTTP servers that were
available for free. The goal of this project is to provide a secure,
efficient and scalable server that provides HTTP services and conforms to
the current HTTP standard.
This Apache httpd server is designed to be compatible with NCSA httpd 1.3 and
provide frequently requested features such as
. DBM database
for authentication purposes. Customized error and problem response methods
. Multiple directoryindex directives
. Unlimited Alias ​​and Redirect commands
. Content-based file negotiation
. Virtual Server
Apache Authorization Letter
Copyright 1995 The Apache Group. All rights reserved.
If the following conditions are met, whether it has been modified or not, it will be distributed and used in the form of the original program and executable program
All are permitted:
1. Distribution of source code must retain the above copyright notice, this list of conditions and the following
statement.
2. Distribution in the form of executable code must reproduce the above copyright notice, this list of conditions and the following statement in the documentation and/or information accompanying the distribution.
3. All advertisements that mention or use the features of this software must display the following message:
`This product includes software developed by the Apache Group
for use in the Apache HTTP server project (http:/ /www.apache.org/).'
4. `Apache Server' and `Apache Group' These names are not accompanied by the aforementioned
license and may not be used to endorse or encourage the adoption of derivative products of this software. .
5. The following information must be retained in any form of dissemination:
`This product includes software developed by the Apache Group
for use in the Apache HTTP server project (http://www.apache.org/ ).'
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following condictions
are met:
1. Redistribution of source code must retain the above copyright
notice, this list of condictions and the following disclaimer.
2. Redistribution in binary form must reproduce the above copyright
notice, this list of condictions and the following disclaimer in
the documentation and/or other materials provided with the