cakephp: __isset() Inconsistency

Description

According to the Entity Class documentation, __isset() “Returns whether this entity contains a field named $field regardless of if it is empty” (emphasis added). However, the actual implementation in EntityTrait calls $this->has() and the comment for __isset() says “Returns whether this entity contains a field named $field and is not set to null” (which is consistent for the behavior of has()).

Minimally, the documentation should be made consistent with the implementation, but better would be for __isset() to implement the functionality described in the API documentation. Otherwise, in order to tell if a null key is set it is necessary to jump through some hoops, such as first calling extract() or jsonSerialize().

CakePHP Version

4.2.9 and later

PHP Version

7.4.27