Fatal error: Uncaught ArgumentCountError: Too few arguments to function Class::__construct(), 0 passed in and at least 1 expected in PHP7.1

Question

I am learning PHP but I encountered a new problem. I would appreciate if you help.

My code:

$idTrack = (new Track_Obj)->getIdtCommon($a,$b);

---

Class Track_Obj{
function __construct( $idtakip, $env = false ) {...}

function getIdtCommon( $idref, $idstudent, $env = false) {...}
}

Error:

Uncaught ArgumentCountError: Too few arguments to function Track_Obj::__construct(), 0 passed in and at least 1 expected in PHP7.1

Answer 1

Solve:

New code:

    $idTrack = (new Track_Obj($idtakip))->getIdtCommon($a,$b);
 or
    $class=new Track_Obj($idtakip);
    $idTrack = $class->getIdtCommon($a,$b);

Thank you for help and explanation @Phil