form表单内的内容用post上传后在php界面怎么接受自

一个标题输入，一个textarea输入，在该页面点击提交在php界面要怎么接收？然后自动转化为h1和p，要保留textarea中的换行。这是我写的html提交页面的内容。

 
     
            标题            
     
        正文        <textarea></br>        <input type="submit" value="提交"></code></pre>        </dd>      </dl></p>
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