How to install php 7.4 on ubuntu 20.04

What’s New in PHP with PHP 7.4?

In this post we’re covering several changes and features that should be added to the language with the final release of PHP 7.4:

• Forget array_merge: PHP 7.4 Brings Spread Operator in Array Expression
• Arrow Functions 2.0 (Short Closures)
• Null Coalescing Assignment Operator
• Typed Properties 2.0
• Weak References
• Covariant Returns and Contravariant Parameters
• Preloading
• New Custom Object Serialization Mechanism
• Deprecations

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