PHP output to be shown for a second

Question

I've got an url http://www.example.com/?req=welcome.

To get the parameter req I use PHP like this:

      echo $_GET['req'];

This will show the message in the body but this output should vanish after a second.

How do i do that?

That's a XSS security hole, see: http://stackoverflow.com/questions/71328/what-are-the-best-practices-for-avoiding-xss-attacks-in-a-php-site. — Johan, Nov 10 '11 at 07:12

score 6 · Answer 1 · answered Nov 10 '11 at 06:58

6

<div id='req'><? echo $_GET['req']; ?></div>

Then use JavaScript:

window.addEventListener('load', function (){
      setTimeout(function (){
         document.getElementById('req').textContent = '';
      }, 1000); // 1000 is 1s. Set this to how many seconds you want to allow the request to be displayed for.
});

answered Nov 10 '11 at 06:58

Some Guy

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I posted my answer *only* because everyone else was suggesting jQuery. – Some Guy Nov 10 '11 at 07:06

Steve Adams · Accepted Answer · 2011-11-10T08:41:20.567

0

You would use javascript.

You can see an example of that here, using jquery. It's possible to do it without that framework (or any framework). .delay would be replaced by setTimeout() which would enclose your fade out function.

edited Nov 10 '11 at 08:41

answered Nov 10 '11 at 06:48

Steve Adams

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:That req is in URL.How to get that through js. – Nov 10 '11 at 06:50
:Is this statement necessary $('#wow').delay(3000).fadeOut(500); – Nov 10 '11 at 06:55
@tereško Understood. I should have outlined the javascript method as well, or to start with. – Steve Adams Nov 10 '11 at 07:43
3

`setInterval()`? Are you sure you didn't mean `setTimeout()`? – Piskvor left the building Nov 10 '11 at 08:05
Wow, this is by fast my worst contribution to stack overflow. That is what I meant. – Steve Adams Nov 10 '11 at 08:40

score 0 · Answer 3 · answered Nov 10 '11 at 06:52

0

You can't - PHP is a server-side language, it has no control over the browser after it finishes sending the output.

Note that you could put your echoed code into a HTML element like a div, and hide it with JavaScript some time after the page loads. Example using jQuery for simplicity:

<div id="hidethisafterawhile"><?php  echo $_GET['req']; ?></div>
<script type="text/javascript">
    $(document).ready(function() {
       window.setTimeout(function(){
         $("#hidethisafterawhile").hide();
       },1000);
    });
</script>

answered Nov 10 '11 at 06:52

Piskvor left the building

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@tereško: Did you not understand "example" and "for simplicity"? jQuery is good for showing the relevant parts of the example, as you don't need to worry about `addEventListener` not working in IE6, or the various browser quirks in `textContent`. Nowhere did I say that it's the One True Way of using JS - just that making this example cross-browser without jQuery would detract from its intent. – Piskvor left the building Nov 10 '11 at 08:07

PHP output to be shown for a second

3 Answers3