Groups several characters into a single unit, and captures a match for use in a backreference. For more on backreferences see below. This is, a string will be considered to have matched only if it does not match the rest of the expression.
This article was written in and remains one of our most popular posts. This article will lead you through rewrite rules, regular expressions, and rewrite conditions, and provide a great list of examples.
In the test. In order for the display. A very common approach is to use the expression. This expression combines two metacharacters: the dot character, which means ANY character, and the asterisk character, which specifies zero or more of the preceding character.
Wrapping the expression in brackets stores it in an "atom," which is a variable that allows the matched characters to be reused within the rule. To begin with, we can add the start and end anchor characters.
However, this approach still allows too many matches. Matching anything with. We specify a set using square brackets, and a range using the - character.
Apache changed regex engines when it changed versions, so Apache version 1 requires the leading slash while Apache 2 forbids it! We're almost there! Create a new. The rewrite rule must go on one line with one space between the RewriteRule statement, the regex, and the redirection and before any optional flags.
Our rewrite rule is now complete! The atom values are being extracted from the request string and added to the query string of our rewritten URI. The display. If, however, you have only a short list of allowable countries, it might be best to avoid potential database problems by specifying the acceptable values within the regex.
The RewriteCond statement is used to specify the conditions under which a RewriteRule statement should be applied. RewriteCond is similar in format to RewriteRule in that you have the command name, RewriteCond, a variable to be matched, the regex, and flags.
You can test many server variables with a RewriteCond statement. You can find a list in the SitePoint article I mentioned previously, but this is the best list of server variables I've found. As an example, let's assume that we want to force the www in your domain name. The regex begins with the!
We also have to escape the dot character so that it matches a literal dot and not any character, as is the case with the dot metacharacter.May 30, · Importing Apache mod_rewrite Rules. 05/30/; 3 minutes to read; In this article. by Ruslan Yakushev. Introduction. The URL Rewrite Module in IIS 7 and above provides an import feature that greatly simplifies the process of converting Apache mod_rewrite rules to IIS URL rewrite rules.
For SEO reasons, I need to rewrite all website traffic to the primary new domain name (e.g. ashio-midori.com). Unfortunately, I don't know how to add multiple OR type rewrite conditions. It seems that with all the conditions, sample code below, I get an AND condition.
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.
Introduction. The Apache module mod_rewrite is a very powerful and sophisticated module which provides a way to do URL manipulations. With it, you can do nearly all types of URL rewriting that you may need. It is, however, somewhat complex, and may be intimidating to the beginner.
Feb 20, · Apache’s mod_rewrite makes it easy to require SSL to be used on your site and to gently redirect users who forget to add the https when typing the URL.
Using Apache to redirect http to https will make sure that your site (or a part of it) will only be accessed by your customers using SSL. Introduction.
The RewriteMap directive defines an external function which can be called in the context of RewriteRule or RewriteCond directives to perform rewriting that is too complicated, or too specialized to be performed just by regular expressions.
The source of this lookup can be any of the types listed in the sections below, and enumerated in the RewriteMap reference documentation.