PHP Scope Resolution Operator Yields Undefined Class Constant

Question

I'm trying to use PHP's scope resolution operator to access the bar() method without instantiating the Foo class:

<?php
class Foo
{
    public function bar()
    {
      return 'bar';
    }
}

echo Foo::bar;

But I'm getting:

PHP Fatal error:  Uncaught Error: Undefined class constant 'bar'

What am I doing wrong?

question from:https://stackoverflow.com/questions/65517929/php-scope-resolution-operator-yields-undefined-class-constant

Answer 1

You can't 'access' methods, you can only call them. Also, the method should be marked static:

<?php
class Foo {

    static function bar() {
      return 'bar';
    }

}

echo Foo::bar();