Apache Today [Your Apache News Source]
Your Daily Source for Apache News and Information  
Breaking News Preferences Contribute Triggers Link Us Search About
To internet.com

Apache HTTPD Links
The Apache Software Foundation
Apache Module Registry
PHP Server Side Scripting
The Apache FAQ
Apache Project
Apache XML Project
The Java Apache Project
Apache-Perl Integration Project
The Jakarta Project
Apache-Related Projects


Internet News
Internet Investing
Internet Technology
Windows Internet Tech.
Linux/Open Source
Web Developer
ISP Resources
ASP Resources
Wireless Internet
Internet Resources
Internet Lists
Career Resources

Search internet.com
Advertising Info
Corporate Info
Zend: Keeping your dynamic pages dynamic
Mar 8, 2001, 18 :38 UTC (0 Talkback[s]) (623 reads) (Other stories by John Coggeshall)

"As Web pages become more database-driven and dynamic, it is important that Web browsers display the most up-to-date information available from your site. For those who have been in the PHP field for some time, dealing with this issue is nothing new. The problem itself has nothing to do with PHP at all. Rather, it is the client's browser that is the source."

"... In order to ensure that the Web browser will always download new content, rather than simply relying on its cache, the proper HTTP Headers must be sent before any content. These headers -- "Expires", "Last-Modified", "Cache-Control", and "ETag" -- are used to implement a cache negotiation with the browser in such a way that allows the content to be updated if the document has truly been modified. It still allows the use of the cache if it has not (saving on transfer times). We'll look at these header commands and how they work, to guarantee that content that is updated is refreshed as expected."

Complete Story

Related Stories:
DevShed: Using Variable Variables in PHP(Feb 27, 2001)
PHP Builder: Building dynamic WML sites(Feb 23, 2001)
SysAdmin: Getting Your Message Across with Apache(Feb 17, 2001)
Apache Module Registration: Apache DSSI(Feb 15, 2001)
SysAdmin: Safer CGI Scripting(Feb 09, 2001)
Network World: Getting in PHP(Feb 01, 2001)
WebTechniques: A Database-Independent API for PHP(Jan 23, 2001)

  Current Newswire:
Apache Software Foundation and Camelot Communications take ApacheCon to Dublin, Ireland

Intelligent Enterprise: Untangling the Web

SecurityPortal: Ask Buffy - Apache Proxy Request

SECURITY: Apache 1.3 Security Fix Available for Win32/OS2 users

Covalent Technologies Named to Upside Magazine's Hot 100

PR: New Max Server Pages Is Free Server-Side Web Scripting Xbase Option for Apache

Using Macromedia UltraDev with PostgreSQL, Tomcat and Apache

NewbieNetwork: Using Aggregate Functions and Operators in PostgreSQL

ZDNet: PHP and Zend

PHP DevCenter: Common PHP Installation Problems

No talkbacks posted.
Enter your comments below.
Your Name: Your Email Address:

Subject: CC: [will also send this talkback to an E-Mail address]

See our talkback-policy for or guidelines on talkback content.

About Triggers Newsletters Media Kit Security Triggers Login

Privacy Policy
All times are recorded in UTC.
Linux is a trademark of Linus Torvalds.
Powered by Linux 2.2.12, Apache 1.3.9. and PHP 3.14
© Copyright 2000, internet.com Corp. All Rights Reserved.Legal Notices.