当我点击短信中的链接使用PHP发送短信到另一个号码？

Is that possible to respond to the android application through SMS? I mean, will send SMS to the particular phone number with link and number inside the body. When user click on the link, message to be sent to the number present inside the message.

You could do something like this:

if(isset($_GET['number']))
    // send SMS to number ($_GET['number'])....

SMS e.g.:

yourwebsite.com?number=0157388764