How to Fix Authorization Header Issues When Using Apache 2.4 PHP-FPM?

Apache 2.4 PHP-FPM and Authorization Headers

When using Apache 2.4's mod_proxy to proxy requests to PHP-FPM, the Authorization header may not be passed to the FPM process. This can cause issues with functionality that requires it, such as user authentication.

Solution

To fix this issue, there are several possible approaches:

1. Tweak Module Settings: Determine which Apache module is stripping the Authorization header and override its behavior by modifying its configuration settings. This can be a complex and module-specific process.
2. Pass Header via env: Pass the Authorization header directly to PHP via the environment variable using SetEnvIf directive:

SetEnvIf Authorization "(.*)" HTTP_AUTHORIZATION=

3. Access REDIRECT_HTTP_AUTHORIZATION: In some cases, you may need to access $_SERVER['REDIRECT_HTTP_AUTHORIZATION'] instead of $_SERVER['HTTP_AUTHORIZATION'] in your PHP code.

Note: For a comprehensive solution, it may be necessary to combine these techniques. Please refer to the provided resources for further details and troubleshooting tips.

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