Releases · futureweb/google-ip-prefix-diff-php

Released on: 2024-11-20

Changes Introduced:

IPv6 Integration: Extended the script to handle both IPv4 and IPv6 prefixes, allowing for comprehensive IP range processing.
Separate Processing Pipelines: Implemented distinct processing logic for IPv4 and IPv6 ranges to optimize performance and maintain clarity.
Range Merging and Sorting: Added functionality to merge and sort cloud IP ranges upfront, reducing redundancy and enhancing subtraction efficiency.
Optimized Bitwise Operations: Improved bitwise operations, especially for BCMath, to minimize computational overhead and speed up processing.
Enhanced Functionality:
- Updated IP conversion functions to support IPv6 addresses using inet_pton and inet_ntop.
- Refactored CIDR to range and range to CIDR conversion functions to accommodate IPv6 addressing.
Performance Optimizations: Streamlined loops and minimized redundant calculations to achieve faster execution times without altering output.
Comprehensive Documentation: Updated script comments and documentation to reflect IPv6 support and the associated changes in functionality.
Composer Dependencies: Updated composer.json to include dependencies for PHP extensions GMP and BCMath, along with scripts to enforce their presence.

Impact:

Extended Compatibility: Users can now utilize the script for environments requiring IPv6 alongside IPv4, ensuring broader applicability.
Improved Efficiency: Performance optimizations lead to quicker processing times, especially when dealing with large sets of IP ranges.
Maintainability: Clear separation of IPv4 and IPv6 logic enhances code readability and ease of future maintenance.

Performance Improvements:

Execution Speed: The script now executes in under 500ms with GMP Ext installed on our test server, a significant improvement from the original Python script's 1.5 seconds for the same task. This enhancement ensures faster IP range calculations, making the script more efficient and responsive.

Prerequisites:

PHP Extensions: Continues to require either the PHP GMP or BCMath extension, with GMP being preferred for optimal performance.

Full Changelog: https://github.com/futureweb/google-ip-prefix-diff-php/blob/main/CHANGELOG.md

This release introduces the ability for the script to output the calculated IP prefixes directly to the CLI when executed from the command line.

When the script is run via CLI (php google_ip_prefix_diff.php), it now outputs the resulting IP prefixes (CIDR blocks) line by line.
This makes it easier to redirect the output to a file for caching or further processing:
```
php google_ip_prefix_diff.php > cached_ip_ranges.txt
```

Automation-Friendly: Enables easy integration with cron jobs or other automation tools.
Improved Usability: Users no longer need to manually handle the returned array when running the script via CLI.

php google_ip_prefix_diff.php

Output:

8.8.8.0/24
8.8.4.0/24
203.0.113.0/25

php google_ip_prefix_diff.php > cached_ip_ranges.txt

This saves the output to cached_ip_ranges.txt, which can be reused in your application.

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