这是 H1 #

这是 H2 ##

这是 H3 ###

区块

1. 这是第一行列表项。
2. 这是第二行列表项。

给出一些例子代码：

return shell_exec("echo $input | $markdown_script");

列表

• Red
• Green
• Blue

1. Bird
2. McHale
3. Parish

• This is a list item with two paragraphs.

  This is the second paragraph in the list item. You're
  only required to indent the first line. Lorem ipsum dolor
  sit amet, consectetuer adipiscing elit.

• Another item in the same list.

1986. What a great season.

这是一个普通段落：

这是一个代码区块。

© 2004 Foo Corporation

---

This is an example inline link.

This link has no title attribute.

Google

I get 10 times more traffic from Google than from
Yahoo or MSN.

I get 10 times more traffic from Google
than from Yahoo or
MSN.

single asterisks

single underscores

double asterisks

double underscores

Use the printf() function.

http://example.com/

Tables	Are	Cool
col 3 is	right-aligned	$1600
col 2 is	centered	$12
zebra stripes	are neat	$1