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php parent represents "parent class" in object-oriented syntax. In essence, it represents the "class" of the parent class, not the "object" of the parent class. Its usage is "parent::property or method" ;".
The operating environment of this tutorial: Windows 7 system, PHP 8 version, Dell G3 computer.
The parent keyword in PHP
parent means "parent". In object-oriented syntax, it represents "parent class"
——Essentially, it represents the "class" of the parent class, not the "object" of the parent class;
The usage method is:
parent::Attribute Or method; // Usually a static property or static method, but sometimes it may be an instance property or instance method;
Compare related 2 words:
Keywords |
Meaning |
Usage location: |
Usage example |
parent: |
represents the parent class (this class) |
must be in a method |
parent：：Property or method; |
| ##self ： |
Represents the current class it is in | must be in a method | self :: Static property or method; |
| $this ： | # #Represents the object that calls the current methodmust be in a method | $this-> | Instance attribute or method;
|
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