Call function of just created object

Question

How to call function of just created object without temporary variable?

Code

(new \Foo())->woof();

is not valid in php.

What is right?

Answer 1

It can work if the object has singleton

Foo::getInstance()->woof();

BTW: it doesn't have to be even singleton but also static method which returns the instance

class Foo {
      public static function & getInstance()
      {
         return new self();
      }
}

Answer 2

$obj = new Foo();
$obj->woof();

Sorry, no chaining allowed here.

Answer 3

This is, sadly, impossible.

Answer 4

You need some form of a temporary variable. This work, but it's kinda hackish:

(${''} = new Foo())&&${''}->woof();

I like this solution because ${''} is the only way you can access this variable, so it's ok for temporary ones.

Answer 5

You can do it like this, but it's not very clean:

<?php

class Foo
{
  public function __construct()
  {
  }

  public function bar()
  {
    echo 'hello!';
  }
}

function Foo()
{
  return new Foo();
}

Foo()->bar();

You could also change it to something like

function newClass($className)
{
  return new $className();
}

newClass('Foo')->bar();

But the static method way is preferred.