PHP中使用GD库方式画时钟

<!--demo.html中内容-->

<body>
<img id="time" src="test.php" />


<script>
setInterval(function(){
//让时间动起来
document.getElementById("time").src="test.php?"+Math.random();

},1000);
</script>
</body>

<!--test.php中内容-->

<?php
//获取系统时间,设置时区
date_default_timezone_set("PRC");

$h = date("H");
$i = date("i");
$s = date("s");

//1 创建资源(画布的大小)
$img = imagecreatetruecolor(200, 250);
//设置画布的颜色
$white = imagecolorallocate($img, 0xFF, 0xFF, 0xFF);
$red = imagecolorallocate($img, 255, 0, 0);
$blue = imagecolorallocate($img, 0, 0, 0XFF);
$pink = imagecolorallocate($img, 0XFF, 0, 0XFF);
$green = imagecolorallocate($img, 0, 0xFF, 0);


imagefill($img, 0, 0, $white);
//2. 制作各种颜色
//画空心圆
imageellipse($img, 100, 100, 190, 190, $blue);
//画实心圆
imagefilledellipse($img, 100, 100, 4, 4, $blue);

imagestring($img, 3, 95, 8, "12", $blue);
imagestring($img, 3,180, 95, "03", $blue);
imagestring($img, 3, 95, 180, "06", $blue);
imagestring($img, 3, 11, 95, "09", $blue);

//秒针
$len = 80;

$a = $len*sin(pi()/30*$s);
$b = $len*cos(pi()/30*$s);
$x = 100 + $a;
$y = 100 - $b;


imageline($img, 100, 100, $x, $y, $red);

//数字的时间
imagestring($img, 5, 20, 230, "NOW: {$h}:{$i}:{$s}", $red);

//4保存,或输出给浏览, 写第二个参数就是保存
header("Content-Type:images/gif");
imagegif($img);

//5. 释放资源
imagedestroy($img);

posted on 2016-04-21 20:21  奋斗的寒霜  阅读(339)  评论(0编辑  收藏  举报