How to clone an object in PHP

1. How do you clone an object in PHP?
2. How do I clone a variable in PHP?
3. How do you copy one object to another?
4. Which one of the following is the right way to clone an object in PHP?
5. When an object is cloned PHP will perform copy of all subject properties?
6. How clone method is different from assignment operator in PHP?
7. What is the correct statement for using clone an object?
8. What is copy constructor PHP?
9. What is shallow copy in PHP?
10. What is a deep copy of an object?
11. Is Java clone a deep copy?
12. Is object assign deep copy?

How do you clone an object in PHP?

PHP clone Keyword

1. Create a copy of an object: class MyClass public $color; public $amount; ...
2. Create a copy of an object which has a reference: class MyClass public $amount; // Create an object with a reference. ...
3. Use a __clone() method to break references in a copied object: class MyClass public $amount; public function __clone()

How do I clone a variable in PHP?

Use the clone keyword. $copy = clone $object; important to note: When an object is cloned, PHP 5 will perform a shallow copy of all of the object's properties.

How do you copy one object to another?

There are several approaches to copy an object, as discussed below:

1. Using Copy Constructor or Factory. With the help of Copy Constructor, we can define the actions performed by the compiler when copying a class object. ...
2. Using clone() method. ⮚ Using Object.clone() method. ...
3. Using Serialization. ...
4. Converting to JSON.

Which one of the following is the right way to clone an object in PHP?

You can clone an object by prefacing it with the clone keyword.

When an object is cloned PHP will perform copy of all subject properties?

When an object is cloned, PHP will perform a shallow copy of all of the object's properties. Any properties that are references to other variables will remain references.

How clone method is different from assignment operator in PHP?

Assigning this reference to other variables by reference or normally works the same as with any other values. ... clone explicitly creates a copy of the object itself, not just of the reference that points to the object.

What is the correct statement for using clone an object?

An object copy is created by using the clone keyword (which calls the object's __clone() method if possible). $copy_of_object = clone $object; When an object is cloned, PHP will perform a shallow copy of all of the object's properties. Any properties that are references to other variables will remain references.

What is copy constructor PHP?

If you want to implement a copy constructor in PHP, then you can use the clone method to implement the copy constructor in PHP. In simple words, cloning creates a genuine copy of an object. Assigning an object to another variable does not create a copy, it creates a reference to the same memory location as the object.

What is shallow copy in PHP?

A Shallow Copy copies duplicates as little as possible. A Shallow Copy copies all the values and references into a new instance. In a Shallow Copy any change of a reference member affects both the methods. Example.

What is a deep copy of an object?

Deep copy is a process in which the copying process occurs recursively. It means first constructing a new collection object and then recursively populating it with copies of the child objects found in the original. In case of deep copy, a copy of object is copied in other object.

Is Java clone a deep copy?

clone() creates copy of all fields. Java have primitive types and refences - when you clone your object you get a new object with copies of all primitive field (it is like deep copy) but also you have copy of all refernce fields. ... clone() is a shallow copy.

Is object assign deep copy?

Object. assign does not copy prototype properties and methods. This method does not create a deep copy of Source Object, it makes a shallow copy of the data. For the properties containing reference or complex data, the reference is copied to the destination object, instead of creating a separate object.