.htaccess - How do I capture the incoming request`s HTTP Status Code?

Question

You know how Apache has many server variables like %{REQUEST_URI}, and %{ENV:REDIRECT_STATUS}

What is the variable name for the current request's HTTP status code?

I ask this because I want to write a RewriteCond that says 'if the HTTP status code is 302, then...'. But I cannot figure out what the server variable for this would be.

Your help would be greatly appreciated!

httpd.apache.org/docs/current/mod/mod_rewrite.html#rewritecond — Marc B
– Marc B, Commented Aug 26, 2016 at 20:59
The code probably is NOT available, since it can't be determined until request processing is completed. e.g. there's no point in testing for a 200 code if you're doing "pretty" urls, because the pretty url almost NEVER exists as an actual file on the server. so by definition all pretty urls themselves are 404s. Only what they get rewritten TO would be a 200. — Marc B
– Marc B, Commented Aug 26, 2016 at 21:01

Olaf Dietsche · Accepted Answer · 2022-01-08 16:41:12Z

2

There is no such thing as a request status code. Only the response, sent back from the server to the client, has an HTTP status code.

The closest you can do is setting a Custom Error Responses via an ErrorDocument directive. This means, based on some status code e.g. 404, you can call some server side script, which acts appropriately.

ErrorDocument 404 /var/www/html/errors/handle_404.php

This works for status codes starting with 400 and 500, but not for response codes in the range of 200 or 300. See again Custom Error Responses

Customized error responses can be defined for any HTTP status code designated as an error condition - that is, any 4xx or 5xx status.

Addressing comments, the syntax of ErrorDocument is defined as

Syntax: ErrorDocument error-code document

So there is just the error-code (4xx-5xx) to handle, and some document to show or execute, no way to define any additional flags.

edited Jan 8, 2022 at 16:41

answered Aug 26, 2016 at 21:28

Olaf Dietsche

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6 Comments

MustafaG Over a year ago

Thanks Olaf. I appreciate your concise answer. The error document will not help me, but now I know I need to find another solution to my problem.

Olaf Dietsche Over a year ago

Maybe filters is another option, though I have no experience using those. You must look through the manual and see, if there's something appropriate.

MustafaG Over a year ago

Hey Olaf - thanks. Here is is what I want to achieve now: I have a php script and a apache rewriteRule that are creating an infinite loop... I want apache to only redirect to xwz.php IF xyz.php is not the one that just redirected to this current resource. I just don't know how to say that. Maybe you have some pointers on how this can be achieved?

Rajeev Ranjan Sharma Over a year ago

ErrorDocument 404 /var/www/html/errors/handle_404.php [R=200, L] this the correct, if i want to pass 200 OK response code for all 404 pages?

Olaf Dietsche Over a year ago

@RajeevRanjanSharma If this is a question, ask a new question! Apart from that, the "Syntax" part of ErrorDocument is pretty clear: Syntax: ErrorDocument error-code document. So no status code or flags anywhere.

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