用PHP代码试写出几个输出一段 HTML 代码的方法。

 嗯，你可以使用 PHP 中任何一种输出语句，包括 echo、print、printf，大部分人都使用如下例的 echo：
echo "My string $variable";你也可以使用这种方法：
echo <<<ENDThis text is written to the screen as output and this $variable is parsed too. If you wanted you can have

<span> HTML tags in here as well.</span> The END; remarks must be on a line of its own, and can't contain any extra white space.END;