Mod_rewrite. Available Languages: en | fr Summary The mod_rewrite module uses a rule-based rewriting engine, based on a PCRE regular-expression parser, to rewrite requested URLs on the fly. By default, mod_rewrite maps a URL to a filesystem path. However, it can also be used to redirect one URL to another URL, or to invoke an internal proxy fetch. mod_rewrite provides a flexible and powerful way to manipulate URLs using an unlimited number of rules. Each rule can have an unlimited number of attached rule conditions, to allow you to rewrite URL based on server variables, environment variables, HTTP headers, or time stamps. mod_rewrite operates on the full URL path, including the path-info section. Further details, discussion, and examples, are provided in the detailed mod_rewrite documentation. Logging mod_rewrite offers detailed logging of its actions at the trace1 to trace8 log levels.
Using a high trace log level for mod_rewrite will slow down your Apache HTTP Server dramatically! Example RewriteLog. Learn Apache mod_rewrite: 13 Real-world Examples. This article was written in 2007 and remains one of our most popular posts. If you’re keen to learn more about Apache, you may find this recent article on Apache CloudStack of great interest. Apache’s low-cost, powerful set of features make it the server of choice for organizations around the world. One of its most valuable treasures is the mod_rewrite module, the purpose of which is to rewrite a visitor’s request URI in the manner specified by a set of rules. This article will lead you through rewrite rules, regular expressions, and rewrite conditions, and provide a great list of examples. First off, I’m going to assume that you understand the common reasons for wanting a URI rewriting feature for your web site. Testing Your Server Setup Some hosts do not have mod_rewrite enabled (by default it is not enabled).
Phpinfo(); If you load the script with a browser, look in the Apache Modules section. The Magic of mod_rewrite In the test.html file, enter the following: <h1>This is the HTML file. Mod_rewrite: A Beginner's Guide to URL Rewriting. This article was written in 2002 and remains one of our most popular posts. If you’re keen to learn more about URLs, you may find this recent article on the “www” prefix, by Craig Buckler, of great interest. So you’re a web developer who has all the bells and whistles on your site, creates Web-based applications that are both beautiful and work well. But what about these issues? Applications Must Be Safe A user must not be able to harm your site in any way by modifying a URL that points to your applications. In order to ensure your site’s safe, check all the GET variables coming from your visitors (I think it’s trivial to mention that the POST variables are a must to examine). For example, imagine we have a simple script that shows all the products in a category.
Generally, it’s called like this: myapp.php? But what will this application do if ScriptKiddie(tm) comes and types this in his browser: myapp.php? Applications Must Be Search-Engine Friendly myapp.php? Myapp.php And what about you? Easy Mod Rewrite : mod_rewrite tutorial. URL Rewriting for Beginners - Added Bytes. A beginner's guide to URL rewriting, with plenty of examples.
Introduction URL rewriting can be one of the best and quickest ways to improve the usability and search friendliness of your site. It can also be the source of near-unending misery and suffering. Definitely worth playing carefully with it - lots of testing is recommended. With great power comes great responsibility, and all that. There are several other guides on the web already, that may suit your needs better than this one.
Apache URL Rewriting Guide - The best guide around Before reading on, you may find it helpful to have the mod_rewrite cheat sheet and/or the regular expressions cheat sheet handy. What is "URL Rewriting"? Most dynamic sites include variables in their URLs that tell the site what information to show the user. The problems with this kind of URL structure are that the URL is not at all memorable. Clearly a much cleaner and shorter URL. . Flags. URL Rewriting | redirecting URLs with Apache’s mod_rewrite. Path // → → URL REWRITING The Apache server’s mod_rewrite module gives you the ability to transparently redirect one URL to another, without the user’s knowledge. This opens up all sorts of possibilities, from simply redirecting old URLs to new addresses, to cleaning up the ‘dirty’ URLs coming from a poor publishing system — giving you URLs that are friendlier to both readers and search engines.
This page was last updated on 2012-08-21 An Introduction to Rewriting Readable URLs are nice. A well designed website will have a logical file system layout, with smart folder and file names, and as many implementation details left out as possible. However, there are some cases when the best possible information design can’t stop your site’s URLs from being nigh-on impossible to use. This is a horrible URL, but it and its brethren are becoming increasingly prevalent in these days of dynamically-generated pages. .htaccess tricks and tips.. part two: url rewriting with mod rewrite. Corz.org uses cookies to remember that you've seen this notice explaining that corz.org uses cookies, okay! <ifModule> more clever stuff here </ifModule> redirecting and rewriting "The great thing about mod_rewrite is it gives you all the configurability and flexibility of Sendmail.
The downside to mod_rewrite is that it gives you all the configurability and flexibility of Sendmail. " - Brian Behlendorf, Apache Group One of the more powerful tricks of the .htaccess hacker is the ability to rewrite URLs. Make no mistake, mod_rewrite is complex. The way that rules can work one minute and then seem not to the next, how browser and other in-between network caches interact with rules and testing rules is often baffling, maddening. After all this, it does work, and while I'm not planning on taking that week-end crash-course any time soon, I have picked up a few wee tricks myself, messing around with web servers and web sites, this place..
Very little here is my own invention. Beginning rewriting..