[3.9] Add Argon2id Password Support

[zero-24]

Pull Request for Issue #20826

Summary of Changes

Per https://wiki.php.net/rfc/argon2_password_hash_enhancements Argon2id password hashes will be supported in PHP 7.3. We should add support for this alongside our existing Argon2i logic.

Testing Instructions

review

Expected result

Argon2id PW supported

Actual result

Argon2id PW NOT supported

Documentation Changes Required

@mbabker can you tell me where you documented the Argon2i support?

[HLeithner]

I think this will not work.
You have to check for "$argon2id" before checking for "$argon2i" in the if Statement because strpos "$argon2i" will already be true for "$argon2id"

[zero-24]

fixed by the last commit thanks @HLeithner

[mbabker]

can you tell me where you documented the Argon2i support?

It's not really documented anywhere. We don't have a place covering this part of the API AFAIK.

[HLeithner]

J4i the rfc has been accepted and is already implemented in php 7.3.

[HLeithner]

I have tested this item ✅ successfully on c09b09d

Successfully on PHP 7.3.0alpha4

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