php 后退按钮的代码

声明:本页面是StackOverFlow热门问题的中英对照翻译,遵循CC BY-SA 4.0协议,如果您需要使用它,必须同样遵循CC BY-SA许可,注明原文地址和作者信息,同时你必须将它归于原作者(不是我):StackOverFlow 原文地址: http://stackoverflow.com/questions/3659782/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me): StackOverFlow

提示:将鼠标放在中文语句上可以显示对应的英文。显示中英文
时间:2020-08-25 10:36:15  来源:igfitidea点击:

code for back button

phpbuttonhref

提问by tintincutes

I have a php code here and I would like to create a "back" href to get me back to where I was before. Here's what I have:

我这里有一个 php 代码,我想创建一个“返回”href,让我回到以前的位置。这是我所拥有的:

<input type="submit" <a href="#" onclick="history.back();">"Back"</a>

     <html>
     <head></head>
     <body>

     <?php
     // get form selection
     $day = $_GET['day'];
     // check value and select appropriate item
      if ($day == 1) {
      $special = 'Chicken in oyster sauce';
         }
      elseif ($day == 2) {
      $special = 'French onion soup';
       }
      elseif ($day == 3) {
       $special = 'Pork chops with mashed potatoes and green salad';
        }
      else {
      $special = 'Fish and chips';
      }
      ?>

      <h2>Today's special is:</h2>
       <?php echo $special; ?>
       <input type="submit" <a href="#" onclick="history.back();">"Back"</a>
       </body>
       </html> 

Please help. Thanks in advance!

请帮忙。提前致谢!

回答by GSto

<button onclick="history.go(-1);">Back </button>

回答by davehauser

If you want to do it (what I think you are trying right now) then replace this line

如果你想这样做(我认为你现在正在尝试)然后替换这条线

<input type="submit" <a href="#" onclick="history.back();">"Back"</a>

with this

有了这个

<button type="button" onclick="history.back();">Back</button>

If you don't want to rely on JavaScript then you could get the HTTP_REFERERvariable an then provide it in a link like this:

如果您不想依赖 JavaScript,那么您可以获取该HTTP_REFERER变量,然后在这样的链接中提供它:

<a href="<?php echo $_SERVER['HTTP_REFERER'] ?>">Back</a>

回答by Waqar

<a href="javascript:history.back(1)">Back</a>

this one (by Eiko) is perfect, use css to make a button of <a>... eg you can use this css class in <a>as `

这个(由 Eiko 提供)是完美的,使用 css 制作一个按钮<a>……例如,您可以将这个 css 类<a>用作`

<a class=".back_button" href="javascript:history.back(1)">Back</a>`

.back_button {
display:block;
width:100px;
height:30px;
text-align:center;
background-color:yellow;
border:1px solid #000000;
}

回答by Eiko

You need to tell the browser you are using javascript:

您需要告诉浏览器您正在使用 javascript:

<a href="javascript:history.back(1)">Back</a> 

Also, your input element seems out of place in your code.

此外,您的输入元素在您的代码中似乎不合适。

回答by Chris

<input type="submit" <a href="#" onclick="history.back();">"Back"</a>

Is invalid HTML due to the unclosed inputelement.

由于未关闭的input元素,是无效的 HTML 。

<a href="#" onclick="history.back(1);">"Back"</a>

is enough

足够

回答by pranav shinde

In my application,above javascript function didnt work,because i had many procrosses inside one page.so following code worked for me hope it helps you guys.

在我的应用程序中,上面的 javascript 函数不起作用,因为我在一页中有很多 procrosses。所以下面的代码对我有用,希望对你们有帮助。

  function redirection()
        {
           <?php $send=$_SERVER['HTTP_REFERER'];?> 
            var redirect_to="<?php echo $send;?>";             
            window.location = redirect_to;

        }

回答by James Baloyi

Basically my code sends data to the next page like so:

基本上我的代码将数据发送到下一页,如下所示:

**Referring Page**
$this = $_SERVER['PHP_SELF'];
echo "<a href='next_page.php?prev=$this'>Next Page</a>";

**Page with button**
$prev = $_GET['prev'];
echo "<a href='$prev'><button id='back'>Back</button></a>";