PHP7.2 new features

The content of this article is about the new features of PHP7.2, which has certain reference value. Now I share it with everyone. Friends in need can refer to it

1. Parameter type declaration

2. Return type declaration

3. Parameter type generalization

4. Trailing commas in list syntax

5. Argon2 algorithm in password hashing
   Argon2 is a powerful hashing algorithm that won the championship in the 2015 Password Hash Algorithm Competition. PHP7.2 uses it as Bcrypt As a replacement for the algorithm, the new version of PHP introduces the PASSWORD_ARGON2I constant, which can be used in the password_* series of functions.
   

6. Libsodium becomes a core component of PHP
   Libsodium is a cross-platform and cross-language library for encryption, decryption, signing, password hashing, etc.

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