Online PHP editor | output for O8Y1I

@ 2014-08-22T09:32:14Z

<?php

interface GoAlgorithm
{
    public function go();
}

class GoByDrivingAlgorithm implements GoAlgorithm
{
    public function go()
    {
        echo("Now I'm driving.");
    }
}

class GoByFlying implements GoAlgorithm
{
    public function go()
    {
        echo("Now I'm flying.");

    }
}

class GoByFlyingFast implements GoAlgorithm
{
    public function go()
    {
        echo("Now I'm flying fast");

    }
}

class Vehicle
{
    private $goAlgorithm;

    public function setModeOfTransportation(GoAlgorithm $goType)
    {
        $this->goAlgorithm = $goType;
    }

    public function drive()
    {
        return $this->goAlgorithm->go();
    }
}

$streetRacer = new Vehicle();
$formulaone = new Vehicle();
$helicopter = new Vehicle();
$jets = new Vehicle();

$streetRacer->drive();
$formulaone->drive();
$helicopter->drive();
$jets->drive();

Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Fatal error: Uncaught Error: Call to a member function go() on null in /in/O8Y1I:45 Stack trace: #0 /in/O8Y1I(54): Vehicle->drive() #1 {main} thrown in /in/O8Y1I on line 45
Process exited with code 255.
Output for 5.6.0 - 5.6.28: Fatal error: Call to a member function go() on null in /in/O8Y1I on line 45
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38: Fatal error: Call to a member function go() on a non-object in /in/O8Y1I on line 45
Process exited with code 255.
Output for 4.4.2 - 4.4.9: Parse error: syntax error, unexpected T_STRING in /in/O8Y1I on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1: Parse error: parse error, unexpected T_STRING in /in/O8Y1I on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/O8Y1I on line 3
Process exited with code 255.

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