shallow-copy - w3toppers.com

How do I create a copy of an object in PHP?

In PHP 5+ objects are passed by reference. In PHP 4 they are passed by value (that’s why it had runtime pass by reference, which became deprecated). You can use the ‘clone’ operator in PHP5 to copy objects: $objectB = clone $objectA; Also, it’s just objects that are passed by reference, not everything as you’ve … Read more

In Java, what is a shallow copy?

A shallow copy just copies the values of the references in the class. A deep copy copies the values. given: class Foo { private Bar myBar; … public Foo shallowCopy() { Foo newFoo = new Foo(); newFoo.myBar = myBar; return newFoo; } public Foo deepCopy() { Foo newFoo = new Foo(); newFoo.myBar = myBar.clone(); //or … Read more