What is the nature of PHP object-oriented self and parent

What is the nature of self and parent in PHP object-oriented? For the moment, I think self is a constant representing the class name.

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What is the nature of self and parent in PHP object-oriented? For the moment, I think self is a constant representing the class name.

Self is a pointer to the current class and does not point to any object that has already been instantiated, and general self uses it to point to a static variable in the class.

Parent is a pointer to the parent class, which is typically called by the parent to invoke the constructor of the parental class.

There's a similar question on StackOverflow: Php:self:: vs Parent:: With extends

Self points to this class, and parent points to the parents class

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