setEnvironment-Test.php

<?php

class test{

protected $envi = null;

function setEnvironment($environment)
    {
        $this->envi = environment;
        if ($this->envi) {
            @trigger_error(sprintf('The "%s()" method is deprecated since version 3.3 and will be removed in 4.0. Pass the Twig Environment as second argument of the constructor instead.', __METHOD__), E_USER_DEPRECATED);
            echo "trigger error" ;
        }
        echo " go on" ;
    }
}

$test = new test();
$test->setEnvironment("my-test-env");

?>