将闲置Kindle改造为时钟&B站粉丝数量面板

链接：https://www.never84.com/calendar.php
该链接用电脑浏览器打开会快8小时，这是因为Kindle的浏览器获取的是UTC+0的时间。所以我在代码中故意加了8小时，这样在Kindle上就会显示北京时间了。
获取B站账号粉丝数量的方式可参考这篇文章。
视频展示：
PHP 页面的具体代码如下：
<?php

header("Content-type: text/html; charset=utf-8"); 

error_reporting(E_ALL ^ E_NOTICE);
$uid = $_GET["uid"];

if (true) {
    $file_contents = curl_get_https('https://api.bilibili.com/x/relation/stat?vmid=470620520');
    $arr = json_decode($file_contents,true);
}

function curl_get_https($url){
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL, $url);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
    $tmpInfo = curl_exec($curl);
    curl_close($curl);
    return $tmpInfo;
}

?>

<html>
<head>
<meta content="1">
<title>Bilibili Followers</title>
<style type="text/css">
#font {
	font-size: 120px;
	color: #000000;
	text-decoration: none;
        text-align:center;
  	line-height:120px;
	height: 240px;
	width: 800px;
	margin:0px auto;
	padding-top: 100px;
	padding-right: 5px;
	padding-left: 5px;
}
div {
        text-align: center;
        margin-top: 50px;
    }
#clock {
}
</style>
</head>
<body>
<div>
        <canvas id="clock" height="750px" width="750px"></canvas>
    </div>
    <script type="text/JavaScript" >
var dom = document.getElementById('clock');
var ctx = dom.getContext('2d');
var width = ctx.canvas.width;
var height = ctx.canvas.height;
var r = width / 2;
var rem = width/200;
function drawBackground() {
    ctx.save(); 
    ctx.translate(r, r); 
    ctx.beginPath(); 
    ctx.lineWidth = 10*rem; 
    ctx.arc(0, 0, r - ctx.lineWidth /2, 0, 2 * Math.PI, false);
    ctx.stroke();
    var hourNumbers = [3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 1, 2]; //定义数组
    ctx.font = 18*rem+"px Arial";
    ctx.textAlign = "center";
    ctx.textBaseline = "middle";
       hourNumbers.forEach(function(number, i) {
        var rad = 2 * Math.PI / 12 * i;
        var x = Math.cos(rad) * (r - 30*rem);
        var y = Math.sin(rad) * (r - 30*rem);
        ctx.fillText(number, x, y);
    });
    for (var i = 0; i < 60; i++) {
        var rad = 2 * Math.PI / 60 * i;
        var x = Math.cos(rad) * (r - 18*rem);
        var y = Math.sin(rad) * (r - 18*rem);
        ctx.beginPath();
        if (i % 5 === 0) {
            ctx.arc(x, y, 2*rem, 0, 2 * Math.PI, false);
            ctx.fillStyle = "#000";
        } else {
            ctx.arc(x, y, 2*rem, 0, 2 * Math.PI, false);
            ctx.fillStyle = "#ccc";
        }
        ctx.fill();
    }
}
    function drawHour(hour, minute) {
        ctx.save();
        ctx.beginPath();
        var rad = 2 * Math.PI / 12 * hour;
        var mrad = 2 * Math.PI / 12 / 60 * minute;
        ctx.rotate(rad + mrad);
        ctx.lineWidth = 6*rem;
        ctx.lineCap = "round";
        ctx.moveTo(0, 10*rem);
        ctx.lineTo(0, -r / 2);
        ctx.stroke();
        ctx.restore();
    }
    function drawMinute(minute) {
        ctx.save();
        ctx.beginPath();
        var rad = 2 * Math.PI / 60 * minute;
        ctx.rotate(rad);
        ctx.lineWidth = 3*rem;
        ctx.lineCap = "round";
        ctx.moveTo(0, 10*rem);
        ctx.lineTo(0, -r + 30*rem);
        ctx.stroke();
        ctx.restore();
    }
    function drawSecond(second) {
        ctx.save();
        ctx.beginPath();
        ctx.fillStyle = 'red';
        var rad = 2 * Math.PI / 60 * second;
        ctx.rotate(rad);
        ctx.moveTo(-2*rem, 20*rem);
        ctx.lineTo(2*rem, 20*rem);
        ctx.lineTo(1, -r + 16*rem);
        ctx.lineTo(-1, -r + 16*rem);
        ctx.fill();
        ctx.restore();
    }
    function drawDot() {
        ctx.beginPath();
        ctx.fillStyle = '#fff';
        ctx.arc(0, 0, 3*rem, 0, 2 * Math.PI, false);
        ctx.fill();
    }
    function draw01() {
        ctx.clearRect(0, 0, width, height);
        var now = new Date();
        var hour = now.getHours()+8;
        var minute = now.getMinutes();
        var second = now.getSeconds();
        drawBackground();
        drawHour(hour, minute);
        drawMinute(minute);
        drawSecond(second);
        drawDot();
        ctx.restore();
    }
    draw01();
    setInterval(draw01, 1000);
</script>
<div id="font">
	<?php echo " (ง •̀_•́)ง ". $arr['data']['follower'];?>
</div>
</body>
</html>