Course Content

  • 1. constructor
  • 2. destructor

Course Content


When an object is formed, the function Object() { [native code] } is automatically invoked. When an item is destroyed, Destructor is automatically invoked. This method is used to create a new instance of a class. Used to de-initialize existing objects in order to free up memory for new ones. Used to set up the class's data members.

When an object is destroyed or the script is halted or terminated, a destructor is called. If you construct a __destruct() method, PHP will call it at the conclusion of the script automatically.

When a class object and its members are destroyed, destructors are typically used to deallocate memory and perform other cleanup operations. When a class object goes out of scope or is expressly deleted, the destructor is called.

To prevent it from being invoked from the outside, the function Object() { [native code] } can be made private or protected. If this is the case, the class can only be instantiated using a static method. They have access to private methods since they are in the same class definition, even if they are not of the same object instance.

Explanation: Constructors and destructors both have the same function name and don't have a return type, but constructors accept function parameters while destructors don't.

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