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Example code of cloudflare/cf-ip-rewrite

Informations about the package cf-ip-rewrite

Cloudflare PHP IP Rewriting

This module makes it easy for developers to add rewrite Cloudflare IP Addresses for actual end-user IP Addresses at the application layer. It is recommended to either install mod_cloudflare for Apache or use nginx rewrite rules (https://support.cloudflare.com/hc/en-us/articles/200170706-Does-CloudFlare-have-an-IP-module-for-Nginx-) if possible.

For those cases, where the IP can not be guaranteed to be rewritten by one of these alternate means, this module can be used to rewrite the IP address.

How it works

The class exposes three methods for interaction and a constructor.

Initializing IpRewrite() object will try to rewrite the IP. If the IP is rewritten, $_SERVER["REMOTE_ADDR"] will be updated to reflect the end-user's IP address.

isCloudFlare(); returns true if the CF_CONNECTING_IP header is present in the request and the request originates from a Cloudflare IP.

getRewrittenIP() Returns the rewritten ip address if a rewrite occurs, otherwise it will return null.

getOriginalIP() returns the saved original ip address from $_SERVER["REMOTE_ADDR"].

Best Pratice

Caution

Rewrite action is triggered only once in constructor. If getRewrittenIP() or getOriginalIP() is called multiple times it'll return the first result regardless if a change happened after the first call. Since rewrite action was not triggered.

To get the newest changes a new IpRewrite object should be used.

Testing this module

This module comes with a set of tests that can be run using phpunit. To run the tests, run composer install on the package and then one of the following commands:

Basic Tests

composer test

With code coverage report in coverage folder

vendor/bin/phpunit -c phpunit.xml.dist --coverage-html coverage

All versions of cf-ip-rewrite with dependencies

PHP Build Version
Package Version
Requires php Version >=5.3.0
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