public function update(SplSubject $subject)
{
echo 'The new value is' . $subject->getValue();
}
public function update(SplSubject $subject)
{
if ($subject->getValue() > 20) {
echo "Value is greater than 20!";
}
}
public function update(SplSubject $subject)
{
echo '<b>对象：</b>' . get_class() . ' <b>内容：</b>' . $subject->getValue() . '<br />';
}
public function update(SplSubject $subject)
{
$value = var_export($subject->getValue(), true);
echo "<pre>主题有数据更新了，赶紧来看呀，数据是：\n" . $value . "</pre>\n";
}
public function update(SplSubject $subject)
{
echo '<p>Новое значение равно: ' . $subject->getValue() . '</p>';
}
