当前位置：文江博客话题详情

php可以检测客户端浏览器显示器的大小/分辨率吗？

发布于 2024-07-22 03:38:23 字数 53 浏览 9 评论 0原文

PHP可以检测IP、主机名、客户端代理等。PHP可以检测客户端浏览器监视器的大小/分辨率吗？

原文

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

情丝乱 2024-07-29 03:38:23

不，不能。 PHP 在服务器上运行，因此它无法检测客户端设置，除非您采取特定的客户端步骤将信息传递到服务器上的 PHP 脚本。

回复收藏 0 原文

喜你已久 2024-07-29 03:38:23

请注意，我们中的一些人喜欢我们的浏览器不最大化。也许您最好尝试检测浏览器大小而不是屏幕分辨率。我认为执行任一操作的 JS 都非常相似，但我实际上并不知道情况是这样。

另外，盲人屏幕阅读器的分辨率是多少？

回复收藏 0 原文

毅然前行 2024-07-29 03:38:23

您必须将 PHP 与 JavaScript 一起使用，例如这个例子：

$url = $_SERVER['PHP_SELF'];

if( isset($HTTP_COOKIE_VARS["res"]) )
    $res = $HTTP_COOKIE_VARS["res"];

else {
    ?>
    <script language="javascript">
    <!--
    go();

    function go() 
    {
        var today = new Date();
        var the_date = new Date("August 31, 2020");
        var the_cookie_date = the_date.toGMTString();
        var the_cookie = "res="+ screen.width +"x"+ screen.height;
        var the_cookie = the_cookie + ";expires=" + the_cookie_date;
        document.cookie=the_cookie
            location = '<?echo "$url";?>';
    }
    //-->
    </script>
    <?php
}

//Let's "split" the resolution results into two variables
list($width, $height) = split('[x]', $res);

//Take the width and height minus 300
$tb_width = $width-300;
$tb_height = $height-300;

//Make the table
print("<table align=center border=1 width=" .$tb_width . " height=" . $tb_height . " >
    <tr><td align=center>Your screen resolution is " . $width . " by " . $height . ".<br>
    The width/height of this table is " . $tb_width . " by " . $tb_height . ".</td></tr>
    </table>");

You'll have to use PHP together with JavaScript, like in this example:

$url = $_SERVER['PHP_SELF'];

if( isset($HTTP_COOKIE_VARS["res"]) )
    $res = $HTTP_COOKIE_VARS["res"];

else {
    ?>
    <script language="javascript">
    <!--
    go();

    function go() 
    {
        var today = new Date();
        var the_date = new Date("August 31, 2020");
        var the_cookie_date = the_date.toGMTString();
        var the_cookie = "res="+ screen.width +"x"+ screen.height;
        var the_cookie = the_cookie + ";expires=" + the_cookie_date;
        document.cookie=the_cookie
            location = '<?echo "$url";?>';
    }
    //-->
    </script>
    <?php
}

//Let's "split" the resolution results into two variables
list($width, $height) = split('[x]', $res);

//Take the width and height minus 300
$tb_width = $width-300;
$tb_height = $height-300;

//Make the table
print("<table align=center border=1 width=" .$tb_width . " height=" . $tb_height . " >
    <tr><td align=center>Your screen resolution is " . $width . " by " . $height . ".<br>
    The width/height of this table is " . $tb_width . " by " . $tb_height . ".</td></tr>
    </table>");

回复收藏 0 原文

心是晴朗的。 2024-07-29 03:38:23

我也在寻找这个，但发现这些答案都没有真正回答问题！事实上，PHP 无法知道屏幕分辨率，因为它运行在服务器端。由于该信息未在 HTTP 环境变量中传递，因此我们需要另一个路由。 JavaScript 是一种替代方案。

下面的示例是一个 PHP 页面，用于检查 HTTP 请求中传递的 resolution 变量。如果它没有找到该分辨率变量，则会在页面上创建一段简短的 JavaScript，将该变量以及高度和宽度以重定向的方式传递回自身。当然，当页面在重定向后再次加载时，所有变量都将被设置，PHP 将知道解析结果。

<?php
    if(!isset($_GET['resolution'])) {     
        echo "<script language=\"JavaScript\">     
<!--      
    document.location=\"$PHP_SELF?resolution=1&width=\"+screen.width+\"&height=\"+screen.height;     
//-->     
</script>";     
    } else {
        // Code to be displayed if resolution is detected     
        if(isset($_GET['width']) && isset($_GET['height'])) {     
            echo "Width: " . $_GET['width'] . " and Height: " . $_GET['height'] . "<br />";
        } else {     
            echo "Resolution not detected.";
        }     
    }
?>

最后我发现这是一个非常不令人满意的解决方案。它可以工作，但是很丑陋，给 URL 增加了麻烦并且需要重定向。尽管如此，它可能会激励某人发布更好的答案。仅供参考，应得的信用，这个答案的灵感来自这篇文章。

I was looking for this as well, but found none of these answers really answered the question! Indeed, there is no way for PHP to know the screen resolution since it is running on the server side. Since that information is not passed along in HTTP environment variables, we need another route. Javascript is one alternative.

The example below is a PHP page that checks for a resolution variable being passed in the HTTP request. If it does not find that resolution variable, then it creates a brief bit of JavaScript on the page that passes that variable and the height and width along in a redirect back to itself. Of course, when the page is loaded again after the redirect all the variables will be set and PHP will know the resolution.

<?php
    if(!isset($_GET['resolution'])) {     
        echo "<script language=\"JavaScript\">     
<!--      
    document.location=\"$PHP_SELF?resolution=1&width=\"+screen.width+\"&height=\"+screen.height;     
//-->     
</script>";     
    } else {
        // Code to be displayed if resolution is detected     
        if(isset($_GET['width']) && isset($_GET['height'])) {     
            echo "Width: " . $_GET['width'] . " and Height: " . $_GET['height'] . "<br />";
        } else {     
            echo "Resolution not detected.";
        }     
    }
?>

In the end I found this a pretty unsatisfactory solution. It works, but it is ugly, adding cruft to the URL and requiring a redirect. Still, it may inspire someone to post a better answer. FYI, credit where credit is due, this answer was inspired by this post.

回复收藏 0 原文

标点 2024-07-29 03:38:23

我知道这不是最好的答案，所以不要投反对票。

<script>
/*
    JAVASCRIPT IS ON TELL THE DEVELOPER#
*/
// GET BROWSER WIDTH AND HEIGHT
var bh=screen.height;
var bw=screen.width;
window.location="?doSubmit=do&js=yes&bh="+bh+"&bw="+bw+"";
</script>

<noscript>
    <!--
        JAVASCRIPT IS OFF TELL THE DEVELOPER#
    -->
    <meta http-equiv='refresh' content='0;url=?doSubmit=do&js=off&bh=off&bw=off'>

</noscript>

<?

if($_GET["doSubmit"]=="do"){

    // VARS

        $bh=$_GET["bh"];
        $bw=$_GET["bw"];
        $js=$_GET["js"];

    // PRINT HTML ?>

<table>

    <tr><td><strong>Browser Width:</strong></td><td><?=$bw;?>px</tr>
    <tr><td><strong>Browser Height:</strong></td><td><?=$bh;?>px</tr>
    <tr><td><strong>JavaScript Detection (y/n):</strong></td><td><?=$js;?></tr>

</table>

I know this is not the best answer so spare the downvote.

<script>
/*
    JAVASCRIPT IS ON TELL THE DEVELOPER#
*/
// GET BROWSER WIDTH AND HEIGHT
var bh=screen.height;
var bw=screen.width;
window.location="?doSubmit=do&js=yes&bh="+bh+"&bw="+bw+"";
</script>

<noscript>
    <!--
        JAVASCRIPT IS OFF TELL THE DEVELOPER#
    -->
    <meta http-equiv='refresh' content='0;url=?doSubmit=do&js=off&bh=off&bw=off'>

</noscript>

<?

if($_GET["doSubmit"]=="do"){

    // VARS

        $bh=$_GET["bh"];
        $bw=$_GET["bw"];
        $js=$_GET["js"];

    // PRINT HTML ?>

<table>

    <tr><td><strong>Browser Width:</strong></td><td><?=$bw;?>px</tr>
    <tr><td><strong>Browser Height:</strong></td><td><?=$bh;?>px</tr>
    <tr><td><strong>JavaScript Detection (y/n):</strong></td><td><?=$js;?></tr>

</table>

回复收藏 0 原文