array (size=3)
'pid' => int 1
'name' => string '' (length=0)
'water' => int 0
$data['pid'] = I('post.pid',0,'int');
//这里如何获取到上面输出的地址
$data['name'] = I('post.name');
$data['water'] = I('post.water',0,'int');
<input type="hidden" name="name" value="2015-03-12/550146d0a1e0e.png/">