Question 1

How does darsyn/ip compare to using filter_var for IP validation?

Accepted Answer

darsyn/ip offers more robust features like immutability, RFC-based type checking, and subnet operations, whereas filter_var is lighter and faster for basic validation but lacks advanced functionality. Choose darsyn/ip for complex network logic, and filter_var for simple checks.

Question 2

How to check if an IP is within a subnet using darsyn/ip?

Accepted Answer

Use the inRange method on an IP object, as shown in the brief example with IPv4::factory. For instance, call $ip->inRange($networkIp, $prefixLength) to determine membership, handling both IPv4 and IPv6 subnets seamlessly.

Question 3

Can darsyn/ip handle compressed IPv6 addresses like ::1?

Accepted Answer

Yes, the library supports standard IPv6 notations including compressed forms, as it uses factory methods for parsing. Ensure you use the Multi or IPv6 class appropriately, and validation follows RFC standards.

Question 4

What's the performance impact of darsyn/ip vs native PHP functions?

Accepted Answer

darsyn/ip adds overhead due to immutable object creation and factory methods, which can be slower than direct string operations or functions like inet_pton. However, it provides better type safety and features, making it suitable for applications where correctness outweighs micro-optimizations.

Question 5

How to integrate darsyn/ip with a Symfony or Laravel project?

Accepted Answer

Install via Composer and use the classes directly in your code; for Doctrine, add the separate darsyn/ip-doctrine package. There's no built-in framework integration, so manual setup is required for services or entities.

Question 6

Does darsyn/ip support IP address arithmetic or incremental changes?

Accepted Answer

No, the library focuses on immutability and validation, so it doesn't provide methods for arithmetic operations like incrementing addresses. You'd need to convert to binary or use other libraries for such dynamic manipulations.

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