Disable reload and f5 on my php page

Question

i am using a timer on my php page but when some refresh the page the timer start from begin. i want to disable f5 or reload option on my php page.

Thanks in advance

so how can i prevent my timer to start from begining when my page is reload — Ankit Agrawal, Mar 31 '13 at 19:14
Save the timer's state in `onbeforeunload` and restore it in `onload`. — Maerlyn, Mar 31 '13 at 19:17
at best you could maybe store the timer's current value in a cookie and check on each timer tick. but you can **NOT** prevent a user from reloading/refreshing a page in THEIR browser. — Marc B, Mar 31 '13 at 19:42

score 9 · Accepted Answer · answered Sep 23 '13 at 14:30

9

I test it and it works.

function disable_f5(e)
{
  if ((e.which || e.keyCode) == 116)
  {
      e.preventDefault();
  }
}

$(document).ready(function(){
    $(document).bind("keydown", disable_f5);    
});

answered Sep 23 '13 at 14:30

Ankit Agrawal

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Yeah, it's work but it's only disable F5. How about CTRL + R, and right click -> click reload icon? – Blackjack Feb 10 '17 at 09:10

score 3 · Answer 2 · edited May 23 '17 at 12:22

3

Can't be done – that behaviour is controlled by the end user, and rightly so!

The nearest thing you can do is to display a warning when the window is closed or refreshed, which the user can either decide to heed your warning and stick with the current page, or ignore your request and close/refresh anyway.

See here: Alert when browser window closed accidentally

edited May 23 '17 at 12:22

Community

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answered Mar 31 '13 at 19:07

JoLoCo

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Also, the fact that your page was generated with PHP is irrelevant. PHP (a server-side scripting language) generates text output from the server, usually outputting client-side languages such as HTML and Javascript. It's the output from the server that's important here, not how it's generated. I hope that helps! – JoLoCo Mar 31 '13 at 19:09
1

so any other option to prevent my time to start with begining when page reload – Ankit Agrawal Mar 31 '13 at 19:12
2

You could store the timer info in a session cookie so that if the user refreshes the page (or even leaves then comes back) then the timer remains. But that's another question altogether! – JoLoCo Mar 31 '13 at 19:13

score 2 · Answer 3 · answered Mar 31 '13 at 19:07

2

It is impossible to disable such browser functionality. Would you like it if a page disabled your F5 key? I doubt it. If you are trying to implement some kind of security here, I suggest looking at proper server-side verification approaches.

answered Mar 31 '13 at 19:07

jwueller

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Disable reload and f5 on my php page

3 Answers3