Apache Module mod_version
Description: | Version dependent configuration |
---|---|
Status: | Extension |
ModuleIdentifier: | version_module |
SourceFile: | mod_version.c |
Summary
This module is designed for the use in test suites and large networks which have to deal with different httpd versions and different configurations. It provides a new container -- <IfVersion>
, which allows a flexible version checking including numeric comparisons and regular expressions.
Examples
<IfVersion 2.4.2> # current httpd version is exactly 2.4.2 </IfVersion> <IfVersion >= 2.5> # use really new features :-) </IfVersion>
See below for further possibilities.
<IfVersion> Directive
Description: | contains version dependent configuration |
---|---|
Syntax: | <IfVersion [[!]operator] version> ... </IfVersion> |
Context: | server config, virtual host, directory, .htaccess |
Override: | All |
Status: | Extension |
Module: | mod_version |
The <IfVersion>
section encloses configuration directives which are executed only if the httpd
version matches the desired criteria. For normal (numeric) comparisons the version argument has the format major[.minor[.patch]]
, e.g. 2.1.0
or 2.2
. minor and patch are optional. If these numbers are omitted, they are assumed to be zero. The following numerical operators are possible:
operator | description |
---|---|
= or ==
| httpd version is equal |
> | httpd version is greater than |
>= | httpd version is greater or equal |
< | httpd version is less than |
<= | httpd version is less or equal |
Example
<IfVersion >= 2.3> # this happens only in versions greater or # equal 2.3.0. </IfVersion>
Besides the numerical comparison it is possible to match a regular expression against the httpd version. There are two ways to write it:
operator | description |
---|---|
= or ==
|
version has the form /regex/
|
~ |
version has the form regex
|
Example
<IfVersion = /^2.4.[01234]$/> # e.g. workaround for buggy versions </IfVersion>
In order to reverse the meaning, all operators can be preceded by an exclamation mark (!
):
<IfVersion !~ ^2.4.[01234]$> # not for those versions </IfVersion>
If the operator is omitted, it is assumed to be =
.
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