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使用PHP GD库构造一个简易时钟
作者：小萝卜 2019-08-24 【 PHP GD库 】 浏览 1638
简介使用PHP GD库构造一个简易时钟
使用PHP GD库构造一个简易时钟
html代码:
php代码：
html代码:
<html>
<head>
<title>时钟显示</title><html>
<head>
<script type="text/javascript">
function showClock()
{
document.getElementById('clock').src= "clock.php?id="+Math.random();
setTimeout('showClock()',1000)
}
</script>
</head>
<body onload="showClock()">
<center>
<img id="clock" src="clock.php" title="Sunshine-BMR" />
</center>
</body>
</html>
php代码：
<?php
//1.定义背景以及相关变量
/*================================================*/
//定义大小为400×400的画布
$width = 400; //画布宽度
$height = 400; //画布高度
$im = imagecreatetruecolor($width,$height);
//定义相关颜色
$bg_col_0 = imagecolorallocate($im,0,255,0); //定义背景色为绿色
$watch_axis_col = imagecolorallocatealpha($im,128,128,128,30); //定义表轴心为灰色
$watch_bg_col = imagecolorallocatealpha($im,255,255,255,60); //定义表盘色为白色
//定义三中随机指针颜色
$watch_hh_col = imagecolorallocate($im,rand(150,200),rand(0,50),rand(56,100));
$watch_mh_col = imagecolorallocate($im,rand(30,70),rand(0,50),rand(150,250));
$watch_sh_col = imagecolorallocate($im,rand(40,60),rand(0,50),rand(30,150));
//定义四种随机表盘数字颜色
$watch_num_col_0 = imagecolorallocate($im,rand(0,200),rand(0,200),rand(0,200));
$watch_num_col_1 = imagecolorallocate($im,rand(0,200),rand(0,200),rand(0,200));
$watch_num_col_2 = imagecolorallocate($im,rand(0,200),rand(0,200),rand(0,200));
$watch_num_col_3 = imagecolorallocate($im,rand(0,200),rand(0,200),rand(0,200));
//定义表盘文字颜色
$watch_name_col = imagecolorallocatealpha($im,rand(0,50),rand(0,50),rand(0,50),100);
//定义钟表相关属性
//定义表盘相关属性
$watch_pos_x = 200; //定义钟表、表轴心x坐标
$watch_pos_y = 200; //定义钟表、表轴心y坐标
$watch_w = 300; //定义钟表宽度
$watch_h = 300; //定义钟表高度
//定义指针相关属性
//定义三个指针初始位置
$watch_hand_start_x = 200; //定义指针初始点x坐标
$watch_hand_start_y = 200; //定义指针初始点y坐标
//定义秒针相关属性
$watch_sh_num = date("s"); //获取当前时间秒数
$watch_sh_rad = $watch_sh_num*pi()/30; //转换为弧度
$watch_sh_length = 120; //定义秒针指针长度
$watch_sh_start_x = 200; //定义秒针初始点x坐标
$watch_sh_start_y = 200; //定义秒针初始点y坐标
$watch_sh_stop_x = $watch_hand_start_x + $watch_sh_length * sin($watch_sh_rad); //定义秒针终止点x坐标
$watch_sh_stop_y = $watch_hand_start_y - $watch_sh_length * cos($watch_sh_rad); //定义秒针终止点y坐标
//定义分针相关属性
$watch_mh_num = date("i"); //获取当前时间分钟数
$watch_mh_rad = $watch_mh_num*pi()/30; //转换为弧度
$watch_mh_length = 110; //定义分针指针长度
$watch_mh_start_x = 200; //定义分针初始点x坐标
$watch_mh_start_y = 200; //定义分针初始点y坐标
$watch_mh_stop_x = $watch_hand_start_x + $watch_mh_length * sin($watch_mh_rad); //定义分针终止点x坐标
$watch_mh_stop_y = $watch_hand_start_y - $watch_mh_length * cos($watch_mh_rad); //定义分针终止点y坐标
//定义时针相关属性
$watch_hh_num = date("g",time()+7*3600); //获取当前时间小时数
$watch_hh_rad = $watch_hh_num*pi()/6; //转换为整点弧度
$watch_hh_rad += $watch_mh_num*pi()/360;
$watch_hh_length = 80; //定义时针指针长度
$watch_hh_start_x = 200; //定义时针初始点x坐标
$watch_hh_start_y = 200; //定义时针初始点y坐标
$watch_hh_stop_x = $watch_hand_start_x + $watch_hh_length * sin($watch_hh_rad); //定义时针终止点x坐标
$watch_hh_stop_y = $watch_hand_start_y - $watch_hh_length * cos($watch_hh_rad); //定义时针终止点y坐标
/*================================================*/
//2.绘图
/*================================================*/
//填充背景
imagefill($im,0,0,$bg_col_0);
//绘制表盘
imagefilledellipse($im,$watch_pos_x,$watch_pos_y,$watch_w,$watch_h,$watch_bg_col); //绘制表盘
//绘制表盘边框
for($i=0;$i<10;$i++){
//随机定义颜色
$bg_border_col = imagecolorallocatealpha($im,rand(5,250),rand(5,250),rand(5,250),75);
imagefilledellipse($im,0,0,170-17*$i,170-17*$i,$bg_border_col); //绘制表盘边框(左上角)
imagefilledellipse($im,$width,0,170-17*$i,170-17*$i,$bg_border_col); //绘制表盘边框(右上角)
imagefilledellipse($im,0,$height,170-17*$i,170-17*$i,$bg_border_col); //绘制表盘边框(左下角)
imagefilledellipse($im,$width,$height,170-17*$i,170-17*$i,$bg_border_col); //绘制表盘边框(右下角)
}
//绘制表盘文字
imagettftext($im,14,0,138,260,$watch_num_col_0,"msyh.ttf","Sunshine-BMR");
//绘制表盘数字（1-12）
imagettftext($im,14,0,260,95,$watch_num_col_0,"STCAIYUN.TTF",1);
imagettftext($im,14,0,306,141,$watch_num_col_1,"STCAIYUN.TTF",2);
imagettftext($im,14,0,325,208,$watch_num_col_2,"STCAIYUN.TTF",3);
imagettftext($im,14,0,308,272,$watch_num_col_3,"STCAIYUN.TTF",4);
imagettftext($im,14,0,260,320,$watch_num_col_0,"STCAIYUN.TTF",5);
imagettftext($im,14,0,195,336,$watch_num_col_1,"STCAIYUN.TTF",6);
imagettftext($im,14,0,130,320,$watch_num_col_2,"STCAIYUN.TTF",7);
imagettftext($im,14,0,83,272,$watch_num_col_3,"STCAIYUN.TTF",8);
imagettftext($im,14,0,66,208,$watch_num_col_0,"STCAIYUN.TTF",9);
imagettftext($im,14,0,80,141,$watch_num_col_1,"STCAIYUN.TTF",10);
imagettftext($im,14,0,130,95,$watch_num_col_2,"STCAIYUN.TTF",11);
imagettftext($im,14,0,190,77,$watch_num_col_3,"STCAIYUN.TTF",12);
//绘制指针
imageline($im,$watch_sh_start_x,$watch_sh_start_y,$watch_sh_stop_x,$watch_sh_stop_y,$watch_sh_col); //绘制秒针
imageline($im,$watch_mh_start_x,$watch_mh_start_y,$watch_mh_stop_x,$watch_mh_stop_y,$watch_mh_col); //绘制分针
imageline($im,$watch_hh_start_x,$watch_hh_start_y,$watch_hh_stop_x,$watch_hh_stop_y,$watch_hh_col); //绘制时针
//绘制表盘轴心
imagefilledellipse($im,$watch_pos_x,$watch_pos_y,10,10,$watch_axis_col);
/*================================================*/
//3.显示图形
/*================================================*/
header("content-type:image/png");
imagepng($im);
/*================================================*/
//4.销毁图形
/*================================================*/
imagedestroy($im);
/*================================================*/
?>
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