In PHP, can you instantiate an object and call a method on the same line?

Question

What I would like to do is something like this:

$method_result = new Obj()->method();

Instead of having to do:

$obj = ne         


        

Answer 1

No, this is not possible.
You need to assign the instance to a variable before you can call any of it's methods.

If you really wan't to do this you could use a factory as ropstah suggests:

class ObjFactory{
  public static function newObj(){
      return new Obj();
  }
}
ObjFactory::newObj()->method();

Answer 2

I, too, was looking for a one-liner to accomplish this as part of a single expression for converting dates from one format to another. I like doing this in a single line of code because it is a single logical operation. So, this is a little cryptic, but it lets you instantiate and use a date object within a single line:

$newDateString = ($d = new DateTime('2011-08-30') ? $d->format('F d, Y') : '');

Another way to one-line the conversion of date strings from one format to another is to use a helper function to manage the OO parts of the code:

function convertDate($oldDateString,$newDateFormatString) {
    $d = new DateTime($oldDateString);
    return $d->format($newDateFormatString);
}

$myNewDate = convertDate($myOldDate,'F d, Y');

I think the object oriented approach is cool and necessary, but it can sometimes be tedious, requiring too many steps to accomplish simple operations.

Answer 3

Simply we can do this

$method_result = (new Obj())->method();