How to call parent class method in php subclass

php The method for a subclass to call the parent class method: [$this->Method name ()]. ​​If there is this method in the subclass, the method in the subclass is called. If not, then The method in the parent class is called.

Method call:

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$this->方法名();

If there is this method in the subclass, the method in the subclass is called, if not, the method in the parent class is called.

parent::

Always call the method in the parent class.

Variable calling:

$this->变量名;

If there is this variable in the subclass, the variable in the subclass will be called. If not, the variable in the parent class will be called.

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