The new version continues the transition to stricter class design by removing dynamic properties. These properties, created at runtime without prior declaration, are a common source of bugs and vulnerabilities. PHP 8.4 requires properties to be explicitly declared in classes, which improves security and makes debugging easier.
3. Property hooks
One of the most anticipated new features in PHP 8.4 is crypto email list the addition of Property Hooks , a proposal that redefines how we interact with object properties. This functionality allows us to intercept access, writing, and deletion of properties using specific magic methods such as __get(), __set(), and __unset().
What does this improvement bring?
Allows greater control over how an object's properties are managed.
Facilitates dynamic validation and logging of events related to property handling.
Improves encapsulation by allowing manipulation of internal logic without directly exposing it.
With this feature, PHP takes an important step towards implementing more advanced object-oriented design patterns.
4. Improved random value generation
The introduction of the randomized class improves the generation of random values, providing specific engines such as Secure (ideal for production environments) and Mt19937 (perfect for testing). This improvement allows for more granular and secure control over the generated random values, complying with modern cryptography standards.
5. New data types: null, true and false
PHP 8.4 extends the type system by allowing null, true, and false to be used as independent types. This feature is especially useful for writing clearer, more self-descriptive code, while reducing errors in type handling.
6. Types in disjunctive normal form (DNF)
It is now possible to combine intersection and union types in a more expressive way. For example, (A&B)|C allows you to specify that the parameter can be an instance that implements both A and B, or an instance of C. This provides greater flexibility for defining type validation rules in complex projects.