<?php
function getToDaChoppa($that = false) {
    $class = $that ? get_class($that) : '';
    if($class == "Choppa") {
        $foo = "We're inside";
    } else {
        $foo = "We're outside";
    }
    echo $foo;
}

class Choppa {
    public function getStatus() {
        getToDaChoppa($this);
    }
}


getToDaChoppa(); // Would return "We're outside" 
( new Choppa )->getStatus(); // Would return "We're inside"