}
static function getInstance()
{
if (self::$con instanceof self) {
return self::$con;
} else {
self::$con = new self();
return self::$con;
}
}
}
class t extends M
{
}
$t1 = t::getInstance();
$t2 = t::getInstance();
$t3 = clone $t2;
var_dump($t1);
var_dump($t2);
var_dump($t3);
if ($t1 === $t2) {
echo 't1 === t2<br/>';
} else {
echo 't1!==t2<br/>';
}
if ($t2 === $t3) {
echo 't2 === t3<br/>';
} else {
echo 't2!== t3<br/>';
}
/*
