The null coalescing assignment operator is a shorthand for null coalescing operations. Let’s take a example code So, instead of writing the previous code, we could write the following: If the value of the left-hand parameter is null, then the value of the right-hand parameter is used.
Arrow functions also called “short closures”. We can always access the parent scope, there’s no need for the use keyword. Here is a simple example with an arrow function. Above code we can write as show below without arrow function
PHP 7.4 allows for underscores to be used to visually separate numeric values. It looks like this: The underscores are simply ignored by the engine. i.e both are equal.