PHP code - 11 lines

Link:

PHP, pasted on May 4:

<?php
error_reporting(E_ALL);
class c
{
 public static $v = 2;
 
}
$f = new c();
echo $f->v;
echo c::$v;
?>

Output:

1
2
3


Notice: Undefined property:  c::$v in /t.php on line 9
2