javascript 使用php获取浏览器宽度
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Get browser width using php
提问by bd_person
Is there a way to get the screen size through php? I have had a look on google, and found a way of doing it through javascript as follows:
有没有办法通过php获取屏幕大小？我在 google 上看过，并找到了一种通过 javascript 执行此操作的方法，如下所示：
PHP :
PHP :
<?php
$width = "<script>sw=screen.width;</script>";
$height = "<script>sh=screen.height;</script>";
echo "Width: ".$width." Height: ".$height;
?>
But this doesn't store anything in $width or $height. is this a good way of going about doing it? or is there another way?
但这不会在 $width 或 $height 中存储任何内容。这是一个很好的方法吗？还是有另一种方式？
回答by Sebastien Kovacs
回答by Lo?c
You can't do that this way, here is a way to do it :
你不能这样做，这是一种方法：
<?php
session_start();
if(isset($_POST['width'])){
$_SESSION['screen_size'] = array();
$_SESSION['screen_size']['width'] = intval($_POST['width']);
$_SESSION['screen_size']['height'] = intval($_POST['height']);
}
if(!isset($_SESSION['screen_size'])){
?>
<html>
<head>
<script>
function getSize(){
document.getElementById('inp_width').value=screen.width;
document.getElementById('inp_height').value=screen.height;
document.getElementById('form_size').submit();
}
</script>
</head>
<body onload='getSize()'>
<form method='post' id='form_size'>
<input type='hidden' name='width' id='inp_width'/>
<input type='hidden' name='height' id='inp_height'/>
</form>
</body>
</html>
<?php
}else{
var_dump($_SESSION['screen_size']);
}
This is a simple way, and the page will reload the first time.
这是一个简单的方法，页面会在第一次重新加载。
You may want to use AJAX.
您可能想使用 AJAX。
Also, if someone refuses sessions cookies, this would loop forever, better test if the browser accepts cookies.
此外，如果有人拒绝会话 cookie，这将永远循环，更好地测试浏览器是否接受 cookie。
