| Features |
Supported |
Comments |
| Perl Compatible Regular Expressions |
Yes |
|
| Server Variable expansion %{VAR_NAME} |
Yes |
|
| RewriteMap expansion ${map_name:key|default} |
Yes |
|
| RewriteRule backreferences $N |
Yes |
|
| RewriteCond backreferences %N |
Yes |
|
| Per-Server configuration |
Yes |
|
| Per-Virtual Site configuration |
Yes |
|
| Per-Directory configuration |
Yes |
Supported only by IIS Mod-Rewrite Pro |
| Override (.htaccess) configuration |
Yes |
Supported only by IIS Mod-Rewrite Pro |
| Rewrite directives |
Supported |
Comments |
| RewriteEngine |
Yes |
|
| "!" negation |
Yes |
|
| [NC] No case text comparison flag |
Yes |
|
| [OR] Or next condition flag |
Yes |
|
| "<" less than text comparison |
Yes |
|
| ">" greater than text comparison |
Yes |
|
| "=" equal to text comparison |
Yes |
|
| "-f" Is regular file |
Yes |
|
| "-d" Is directory |
Yes |
|
| "-s" Is regular file with size |
Yes |
|
| "-x" Is file with executable permissions |
Yes |
|
| "-l" Is symbolic link |
Yes |
|
| "-F" File exists, via subrequest |
No |
Look-aheads are not available on IIS |
| "-U" URL exists, via subrequest |
No |
Look-aheads are not available on IIS |
| RewriteRule |
Yes |
|
| [NC] No case text comparison flag |
Yes |
|
| [R=code] Force redirection flag |
Yes |
|
| [G] Force URL as Gone |
Yes |
|
| [F] Force URL as Forbidden |
Yes |
|
| [N] Run ruleset from the beginning |
Yes |
|
| [S=num] Skip next num rules |
Yes |
|
| [C] Current rule is chained with next rule |
Yes |
|
| [L] This rule is the last |
Yes |
|
| [CO=name:value:domain:expire:path] Set cookie |
Yes |
|
| [QSA] Append querystring |
Yes |
|
| [NE] Do not escape URL |
Yes |
|
| [PT] Pass through to next handler |
Yes |
|
| [P] Force proxy |
Yes |
|
| [NS] Do not allow internal subrequests |
Yes |
ISAPI does not support subrequests. Therefore [NS] always allows execution of rule |
| [E=var:val] Set environment variable |
Yes |
Used for locally setting variables for later retrieval using %{ENV:XXX}. IIS does not provide any API for setting environment variables for CGIs |
| [T=mimetype] Force MIME-type |
Yes |
|
| [H] Force content handler |
Yes |
Available only on IIS 7 |
| RewriteMap |
Yes |
|
int: Internal functions
toupper, tolower, escape, unescape |
Yes |
|
| txt: simple text mapping |
Yes |
|
| rnd: random text mapping |
Yes |
|
| dbm: hash database mapping |
Yes |
|
| prg: program mapping |
Yes |
|
| RewriteBase |
Yes |
Supported only by IIS Mod-Rewrite Pro |
| RewriteLog |
Yes |
|
| RewriteLogLevel |
Yes |
|
| RewriteOptions |
Yes |
|
| RewriteLock |
Yes |
|
| Support directives |
Supported |
Comments |
| AccessFilename |
Yes |
Supported only by IIS Mod-Rewrite Pro |
| AllowOverride |
Yes |
Supported only by IIS Mod-Rewrite Pro |
| ErrorLog |
Yes |
|
| DocumentRoot |
Yes |
|
| ProxyPassReverse |
Yes |
|
| ProxyPassReverseCookieDomain |
Yes |
|
| ProxyPassReverseCookiePath |
Yes |
|
| ServerAdmin |
Yes |
|
| Server variables |
Supported |
Comments |
| HTTP_XXXXX (HTTP headers) |
Yes |
|
| REMOTE_ADDR |
Yes |
|
| REMOTE_HOST |
Yes |
|
| REMOTE_PORT |
Yes |
|
| REMOTE_USER |
Yes |
|
| REMOTE_IDENT |
Yes |
|
| REQUEST_METHOD |
Yes |
|
| SCRIPT_FILENAME |
Yes |
|
| PATH_INFO |
Yes |
Warning: PATH_INFO on IIS may significantly differ from PATH_INFO on Apache |
| QUERY_STRING |
Yes |
|
| AUTH_TYPE |
Yes |
|
| SERVER_NAME |
Yes |
|
| SERVER_ADDR |
Yes |
|
| SERVER_PORT |
Yes |
|
| SERVER_PROTOCOL |
Yes |
|
| SERVER_SOFTWARE |
Yes |
|
| API_VERSION |
Yes |
Returns the emulated Apache API version |
| THE_REQUEST |
Yes |
|
| REQUEST_URI |
Yes |
|
| REQUEST_FILENAME |
Yes |
|
| HTTPS |
Yes |
|
| TIME_YEAR |
Yes |
|
| TIME_MON |
Yes |
|
| TIME_DAY |
Yes |
|
| TIME_HOUR |
Yes |
|
| TIME_MIN |
Yes |
|
| TIME_SEC |
Yes |
|
| TIME_WDAY |
Yes |
|
| TIME |
Yes |
|
| DOCUMENT_ROOT |
Yes |
|
| SERVER_ADMIN |
Yes |
|
| IS_SUBREQ |
Yes |
ISAPI does not support subrequests. Therefore IS_SUBREQ always returns "false" |
| Additionally, IIS Mod-Rewrite supports all IIS specific server variables |
|
|
