Screen resolution

[NeedHelp]

How do I get the screen resolution using PHP?

[John]

The screen resolution of the server or the client?
To get the resolution of the server you would have to use the exec() function and execute the unix/dos command to get the resolution (are there any?)

But you probably mean the client, which you would use JavaScript

<script type="text/javascript"> 
  document.write(window.screen.width + ' x ' + window.screen.height); 
</script>

You can write the resolution to a cookie and use the php cookie functions to grab the resolution from the cookie file.

[Jordan]

To get the client records you will need to use Javascript and there is no way that PHP can receive this value since it is server side.

[NeedHelp]

Hmm, I really just need to make an if statement and if their resolution is lower than a certain value display an error message. Do I need to do a cookie and everything for that?

[John]

How would you compare the value?

if(<script type="text/javascript"> 
  document.write(window.screen.width + ' x ' + window.screen.height); 
</script> < 1024)
echo "Error"; 

Im pretty sure if you want to use php to display the error message you have to use cookies, unless there is another way to store the width/height. You could always of course display the error in JavaScript. Im no JS expert but maybe something like this

<script type="text/javascript">
if(window.screen.width < 1024)
allert("Your screen is too small");
</script>

[Jordan]

What Sidewinder suggested would work well. You could also create a dynamic page using JavaScript or simply forward the user to an error page (like res.html) with the same logic above.

[NeedHelp]

That works. I'll figure out something. Thank you.