<?php
/**
* PLChart - PHP图表生成工具 - Create charts in PHP
*
* ====================================================================
* Filename : plchart.php
* Summary: PLChart图表类文件 - PLChart class file
* Author: zeroleonhart ( msn:zeroleonhart@hotmail.com )
* Version: 0.060811
* Copyright (c)2006 zeroleonhart@hotmail.com
* ====================================================================
*
*
*/
class plchart
{
// ============================ 参数定义 - define references ============================
// 图表变量 - chart variable
var $chart;
// 图表类型 - chart type
var $type;
// 3D效果 - 3D effect
var $d3d;
// 图表宽度 - chart width
var $width;
// 图表高度 - chart height
var $height;
// 图表质量 - chart quality
var $quality;
// 图表背景色 - image backgroundcolor
var $bgcolor = array();
// 图表参数 - chart parameter
var $param = array();
// 保存为文件的路径 - saving file directory
var $savefile;
// 图形参数 - graphics references
var $graphics = array();
// 标题参数 - title references
var $title = array();
// 注释参数 - description references
var $desc = array();
// 图表颜色数组 - colors array in chart
var $colors = array();
// 颜色定义 - define color
var $colordefine = array(
"lightgray" => array(192, 192, 192),
"darkgray" => array(144, 144, 144),
"lightred" => array(255, 0, 0),
"darkred" => array(128, 0, 0),
"lightgreen" => array(0, 255, 0),
"darkgreen" => array(0, 80, 0),
"lightblue" => array(0, 0, 255),
"darkblue" => array(0, 0, 80),
"lightyellow" => array(255, 255, 0),
"darkyellow" => array(200, 200, 50),
"lightcyan" => array(0, 255, 255),
"darkcyan" => array(0, 90, 90),
);
// ============================ 设置函数 - setting functions ============================
/*
* @todo 设置图像背景色 - set the backgroundcolor of the chart image
*
* @param int $red
* @param int $green
* @param int $blue
*
*/
function setbgcolor($red = 0, $green = 0, $blue = 0)
{
$this->bgcolor[0] = $red;
$this->bgcolor[1] = $green;
$this->bgcolor[2] = $blue;
}
/*
* @todo 设置图像参数 - set the parameters of the chart image
*
* @param string $type
* @param int $d3d
* @param int $width
* @param int $height
* @param int $quality
* @param array $data
* @param string $savefile
*
*/
function setchartdata($type = "pie", $d3d = 1, $width = 400, $height = 400, $quality = 70, $data = array(), $savefile = '')
{
$this->type = $type; // 图表类型 - type of the chart : pie, column, line
$this->d3d = $d3d; // 3D效果 -
$this->width = $width; // 图表宽度
$this->height = $height; // 图表高度
$this->quality = $quality; // 图表显示质量
$this->param = $data; // 源数据数组
$this->savefile = $savefile; // 保存文件路径
}
/*
* @todo 设置图像标题 - set the title of the chart
*
* @param string $tstring
* @param float $tfontsize
* @param float $tangle
* @param int $tposx
* @param int $tposy
* @param string $tfontfile
* @param int $tfred
* @param int $tfgreen
* @param int $tfblue
*
*/
function settitle($tstring = '', $tfontsize = 20, $tangle = 0, $tposx = 10, $tposy = 20, $tfontfile = 'c:/windows/fonts/simhei.ttf', $tfred = 0, $tfgreen = 0, $tfblue = 0)
{
$this->title = array($tfontsize, $tangle, $tposx, $tposy, $tfontfile, $tstring, $tfred, $tfgreen, $tfblue);
}
/*
* @todo 设置图像注释 - set the decsription of the chart
*
* @param int $dposx
* @param int $dposy
* @param int $dwidth
* @param int $dheight
* @param int $dmargin
* @param int $dsize
* @param int $dangle
* @param string $dfontfile
* @param int $dfred
* @param int $dfgreen
* @param int $dfblue
*
*/
function setdesc($dposx = 0, $dposy = 0, $dwidth = 100, $dheight = 300, $dmargin = 10, $dsize = 10, $dangle = 0, $dfontfile = 'c:/windows/fonts/simhei.ttf', $dfred = 0, $dfgreen = 0, $dfblue = 0)
{
$this->desc = array($dposx, $dposy, $dwidth, $dheight, $dmargin, $dsize, $dangle, $dfontfile, $dfred, $dfgreen, $dfblue);
}
/*
* @todo 设置图形 - set the graphics of the chart
*
* @param int $gstartx
* @param int $gstarty
* @param int $gwidth
* @param int $gheight
* @param int $gmargin
* @param float $shadow
*
*/
function setgraphics($gstartx = 0, $gstarty = 0, $gwidth = 100, $gheight = 100, $gmargin = 10, $shadow = 0.1)
{
$this->graphics = array($gstartx, $gstarty, $gwidth, $gheight, $gmargin, $shadow);
}
// ============================ 生成函数 - build functions ============================
/*
* @todo 生成图表实例 - build chart object
*
*/
function buildchart()
{
// 图像头信息 - header of the image file
header("Content-type: image/jpeg");
// 建立图像 - create image
$this->chart = imagecreatetruecolor($this->width, $this->height);
// 填充背景色 - set backgroundcolor
$bgc = imagecolorallocate($this->chart, $this->bgcolor[0], $this->bgcolor[1], $this->bgcolor[2]);
imagefill($this->chart, 0, 0, $bgc);
// 定义颜色 - allocate colors in the graphics
foreach($this->colordefine as $key => $value)
{
$$key = imagecolorallocate($this->chart, $value[0], $value[1], $value[2]);
array_push($this->colors, $$key); // 颜色变量入栈 - add color variables into array
}
}
/*
* @todo 生成图表标题 - build title of the chart
*
*/
function buildtitle()
{
// 设置标题颜色 - set title color
$titlecolor = imagecolorallocate($this->chart, $this->title[6], $this->title[7], $this->title[8]);
// 写标题 - write title
imagettftext($this->chart, $this->title[0], $this->title[1], $this->title[2], $this->title[3], $titlecolor, $this->title[4], $this->title[5]);
}
/*
* @todo 生成图表说明 - build description of the chart
*
*/
function builddesc()
{
// 注释位置变量 - image position variables
$dposx = $this->desc[0];
$dposy = $this->desc[1]; // 注释起始坐标 - the start position of the description
$w = $this->desc[2]; // 注释部分宽度 - width of all description
$h = $this->desc[3]; // 注释部分高度 - height of all description
$num = count($this->param); // 注释数量 - number of description lines
$perh = round($h / $num); // 每行注释的平均高度 - height of each description line
$margin = $this->desc[4]; // 注释的间距 - margin between square and font
$dsize = $this->desc[5]; // 注释的字体大小 - font size of description
$dangle = $this->desc[6]; // 注释的字体角度 - font display angle of description
$dfontfile = $this->desc[7]; // 注释的字体文件 - font file of description
$dfcolor = imagecolorallocate($this->chart, $this->desc[8], $this->desc[9], $this->desc[10]); // 注释的字体颜色 - font color of description
// 写注释 - write description
$dstring = array_keys($this->param);
for($i = 0; $i < $num; $i++)
{
// 矩形色块 - colorful square
imagefilledrectangle($this->chart, $dposx, $dposy, $dposx + $dsize, $dposy + $dsize, $this->colors[$i * 2]);
// 写文字 - write string
imagettftext($this->chart, $dsize, $dangle, $dposx + $dsize + $margin, $dposy + $dsize, $dfcolor, $dfontfile, $dstring[$i] . " - " . $this->param[$dstring[$i]]);
// 下移 - move down to write next description
$dposy += $perh;
}
}
/*
* @todo 生成图形 - build graphics of the chart
*
* @param source $chart
* @param int $d3d
* @param array $param
* @param array $colordefine
*
*/
function buildgraphics()
{
// 定义生成图形函数 - define make graphics function
// ==================== 饼状图 - pie ====================
if($this->type == "pie")
{
// 取得图形位置 - get the positoin of the graphics
$posx = $this->graphics[0];
$posy = $this->graphics[1];
// 取得图形宽度和高度 - get width and height of the graphics
$w = $this->graphics[2];
$h = $this->graphics[3];
// 图形边距 - graphics margin
$margin = $this->graphics[4];
// 3D阴影高度对于椭圆高度的比例 - percent of 3D effect shadow height as the height of the ellipse
$shadow = $this->graphics[5];
// 图形位置变量 - image position variables
$centerx = round($posx + $w / 2 + $margin);
$centery = round($posy + $h / 2 + $margin); // 椭圆中心坐标 - the center of the ellipse
// 数据处理 - data process
$total = array_sum($this->param); // 取得总数 - get total
$percent = array(0); // 保存比例 - save each percent
$temp = 0;
foreach($this->param as $v)
{
$temp += 360 * ($v / $total);
array_push($percent, $temp); // 保存角度 - save angle
}
// 生成饼状图 - make pie chart
// 生成3D饼状图 - make 3D pie chart
if($this->d3d == 1)
{
// 3D阴影 - make 3D shadow
for ($j = ($centery * (1 + $shadow)); $j > $centery; $j--)
{
for ($k = 0; $k < count($percent)-1; $k++)
{
imagefilledarc($this->chart, $centerx, $j, $w, $h, $percent[$k], $percent[$k + 1], $this->colors[$k * 2 + 1], IMG_ARC_NOFILL);
}
}
}
// 生成平面饼状图 - make 2D pie chart
for ($i = 0; $i < count($percent)-1; $i++)
{
imagefilledarc($this->chart, $centerx, $centery, $w, $h, $percent[$i], $percent[$i + 1], $this->colors[$i * 2], IMG_ARC_PIE);
}
}
// ==================== 柱状图 - column ====================
elseif($this->type == "column")
{
// 取得图形位置 - get the positoin of the graphics
$posx = $this->graphics[0];
$posy = $this->graphics[1];
// 取得图形宽度和高度 - get width and height of the graphics
$w = $this->graphics[2];
$h = $this->graphics[3];
// 图形边距 - graphics margin
$margin = $this->graphics[4];
// 3D阴影高度对于柱体宽度的比例 - percent of 3D effect shadow height as the width of the column
$shadow = $this->graphics[5];
// 图形位置变量 - image position variables
$startx = round($posx + $margin);
$starty = round($posy + $h - $margin); // 图形左下角坐标 - the left-bottom position of the graphics
// 数据处理 - data process
$maxvalue = max($this->param); // 取得最大值 - get max value
$num = count($this->param); // 取得条柱个数 - get number of columns
$multiple = floor(log10($maxvalue)); // 取得数值区间 - get data field
$field = floor($maxvalue / pow(10, $multiple)) + 1; // 区间数 - number of unit fields
$fieldnumber = $field > 5 ? $field : 5; // 数据区域数量 - number of data fields
$topvalue = $field * pow(10, $multiple); // 图表最高点数值 - value of the top
$unitx = ($w - $margin * 2) / $num; // 取得x单位长度 - get x unit length
$unity = ($h - $margin * 2) / $fieldnumber; // 取得y单位长度 - get y unit length
$shadowheight = $unitx / 2 * $shadow; // 阴影宽度 - shadow height
// 初始化坐标系 - initialize reference frame
if($this->d3d == 1) // 3D效果 - 3D effect
{
imagefilledpolygon($this->chart, array($startx, $starty, $startx + $shadowheight, $starty - $shadowheight, $startx + $shadowheight, $posy - $shadowheight, $startx, $posy), 4, $this->colors[0]);
imageline($this->chart, $startx + $shadowheight, $starty - $shadowheight, $startx + $shadowheight, $posy - $shadowheight, $this->colors[1]);
}
imageline($this->chart, $startx, $starty, $posx + $w, $starty, $this->colors[1]); // x
imageline($this->chart, $startx, $starty, $startx, $posy, $this->colors[1]); // y
// 区间标识 - declare fields
for($i = 0; $i <= $fieldnumber; $i++)
{
// 区间标识线 - lines declaring fields
// 3D效果 - 3D effect
if($this->d3d == 1)
{
imageline($this->chart, $startx, $starty - $unity * $i, $startx + $shadowheight, $starty - $unity * $i - $shadowheight, $this->colors[1]);
imageline($this->chart, $startx + $shadowheight, $starty - $unity * $i - $shadowheight, $posx + $w + $shadowheight, $starty - $unity * $i - $shadowheight, $this->colors[1]);
}
// 2D - 2D
else
{
imageline($this->chart, $startx, $starty - $unity * $i, $posx + $w, $starty - $unity * $i, $this->colors[0]);
}
// 区间说明 - field description
imagettftext($this->chart, $this->desc[5], $this->desc[6], $posx, $starty - $unity * $i, $this->colors[0], $this->desc[7], $topvalue / $fieldnumber * $i);
}
// 生成条柱 - make columns
$paramkeys = array_keys($this->param);
for($j = 0; $j < $num; $j++)
{
$columnheight = ($h - $margin * 2) * ($this->param[$paramkeys[$j]] / $topvalue); // 条柱高度 - column height
$columnx = $startx + $unitx / 4 + $unitx * $j; // 条柱起点x坐标 - x coordinate of column
imagefilledrectangle($this->chart, $columnx, $starty - $columnheight, $columnx + $unitx / 2, $starty - 1, $this->colors[$j * 2]); // 画条柱 - draw columns
// 3D效果 - 3D effect
if($this->d3d == 1)
{
// 轮廓线 - contour line
imagerectangle($this->chart, $columnx, $starty - $columnheight, $columnx + $unitx / 2, $starty - 1, $this->colors[$j * 2 + 1]);
// 3D表面 - 3D top
imagefilledpolygon($this->chart, array($columnx, $starty - $columnheight, $columnx + $unitx / 2, $starty - $columnheight, $columnx + $unitx / 2 + $shadowheight, $starty - $columnheight - $shadowheight, $columnx + $shadowheight, $starty - $columnheight - $shadowheight), 4, $this->colors[$j * 2]);
imagepolygon($this->chart, array($columnx, $starty - $columnheight, $columnx + $unitx / 2, $starty - $columnheight, $columnx + $unitx / 2 + $shadowheight, $starty - $columnheight - $shadowheight, $columnx + $shadowheight, $starty - $columnheight - $shadowheight), 4, $this->colors[$j * 2 + 1]);
// 3D阴影 - 3D shadow
imagefilledpolygon($this->chart, array($columnx + $unitx / 2, $starty, $columnx + $unitx / 2 + $shadowheight, $starty - $shadowheight, $columnx + $unitx / 2 + $shadowheight, $starty - $columnheight - $shadowheight, $columnx + $unitx / 2, $starty - $columnheight), 4, $this->colors[$j * 2 + 1]);
imagepolygon($this->chart, array($columnx + $unitx / 2, $starty, $columnx + $unitx / 2 + $shadowheight, $starty - $shadowheight, $columnx + $unitx / 2 + $shadowheight, $starty - $columnheight - $shadowheight, $columnx + $unitx / 2, $starty - $columnheight), 4, $this->colors[$j * 2 + 1]);
}
}
}
// ==================== 曲线图 - line ====================
else
{
// 取得图形位置 - get the positoin of the graphics
$posx = $this->graphics[0];
$posy = $this->graphics[1];
// 取得图形宽度和高度 - get width and height of the graphics
$w = $this->graphics[2];
$h = $this->graphics[3];
// 图形边距 - graphics margin
$margin = $this->graphics[4];
// 每个点的直径 - diameter of each point
$pointsize = $this->graphics[5] * 20;
// 图形位置变量 - image position variables
$startx = round($posx + $margin);
$starty = round($posy + $h - $margin); // 图形左下角坐标 - the left-bottom position of the graphics
// 数据处理 - data process
$maxvalue = max($this->param); // 取得最大值 - get max value
$minvalue = min($this->param); // 取得最小值 - get min value
$num = count($this->param); // 取得点个数 - get number of points
$fieldnumber = $num; // 数据区域数量 - number of data fields
$fielddata = $maxvalue - $minvalue; // 取得数据区间 - get data field
$unitdata = $fielddata / $fieldnumber; // 取得单位区间数值 - get unit field data value
$unitx = ($w - $margin * 2) / $num; // 取得x单位长度 - get x unit length
$unity = ($h - $margin * 2) / $fieldnumber; // 取得y单位长度 - get y unit length
// 初始化坐标系 - initialize reference frame
imageline($this->chart, $startx, $starty, $posx + $w, $starty, $this->colors[1]); // x
imageline($this->chart, $startx, $starty, $startx, $posy, $this->colors[1]); // y
// 区间标识 - declare fields
for($i = 0; $i <= $fieldnumber; $i++)
{
// 标识线 - declaring fields line
imageline($this->chart, $startx, $starty - $unity * $i, $posx + $w, $starty - $unity * $i, $this->colors[0]);
// 区间说明 - field description
imagettftext($this->chart, $this->desc[5], $this->desc[6], $posx, $starty - $unity * $i, $this->colors[0], $this->desc[7], $minvalue + $unitdata * $i);
}
// 生成线条 - make line
$paramkeys = array_keys($this->param);
$loca = array(); // 保存轨迹的数组 - array to save locas
for($i = 0; $i < $num; $i++) // 得到轨迹数组 - get loca array
{
// 点x坐标 - x coordinate of the point
$pointx = $startx + $unitx * $i;
// 点y坐标 - y coordinate of the point
$pointy = $starty - $unity * $fieldnumber * (($this->param[$paramkeys[$i]] - $minvalue) / $fielddata);
// 坐标数据入栈 - push coordinates into array
$loca[$i * 2] = $pointx;
$loca[$i * 2 + 1] = $pointy;
// 画点 - draw point
imagefilledellipse($this->chart, $pointx, $pointy, $pointsize, $pointsize, $this->colors[$i * 2]);
}
$linecolor = imagecolorallocate($this->chart, $this->title[6], $this->title[7], $this->title[8]); // 定义线条颜色 - define line color
for($i = 0; $i < $num + 3; )
{
// 画线条 - draw line
imageline($this->chart, $loca[$i], $loca[$i + 1], $loca[$i + 2], $loca[$i + 3], $linecolor);
$i += 2;
}
}
}
/*
* @todo 输出图像至浏览器或文件 - output the chart image to browser or file
*/
function outputchart()
{
// 建立图标 - build chart
$this->buildchart();
// 写入图形 - build graphics
$this->buildgraphics();
// 写入注释 - build description
$this->builddesc();
// 写入标题 - build title
$this->buildtitle();
// 输出图像 - flush image
imagejpeg($this->chart, $this->savefile, $this->quality);
imagedestroy($this->chart);
}
}
?>
<?php
// 载入类文件
include('plchart.php');
//设置数据数组
$data = array("1月份:11%" => 20, "2月份:16%" => 23, "3月份:19%" => 27, "4月份:13%" => 18, "5月份:18%" => 24, "6月份:12%" => 25);
// 实例化
$chart = new plchart();
// 设置背景色
// 三个参数为0-255
$chart->setbgcolor(255,255,255);
// 设置标题文字
$title = <<< string
图表测试
TEST PIE CHART
string;
// 设置图表数据
/*
* 第一个参数为图表类型,只能是三个值：pie, column, line
* 第二个参数为是否启用3D显示，0代表不启用，1代表启动
* 第三个参数为图表的宽度
* 第四个参数为图表的高度
* 第五个参数为图表的图片质量，0-100，100为最佳质量，但文件相对也最大
* 第六个参数为原数据数组
*/
$chart->setchartdata("line", 0, 800, 600, 100, $data);
// 设置标题
/*
* 第一个参数为标题的字符串
* 第二个参数为标题字体大小
* 第三个参数为标题倾斜角度
* 第四个参数为标题位于图表的起始横坐标
* 第五个参数为标题文字的基准纵坐标
* 第六个参数为标题字体文件
* 最后三个参数为标题字体的RGB颜色
*/
$chart->settitle($title, 20, 0, 10, 20, 'c:/windows/fonts/simhei.ttf', 0, 0, 0);
// 设置注释
/*
* 第一个参数为注释位于图表的起始横坐标
* 第二个参数为注释位于图表的起始纵坐标
* 第三个参数为注释部分的宽度
* 第四个参数为注释部分的高度
* 第五个参数为注释内容与注释部分边框的间距
* 第六个参数为注释字体大小
* 第七个参数为注释字体倾斜角度
* 第六个参数为注释字体文件
* 最后三个参数为注释字体的RGB颜色
*/
$chart->setdesc(500, 100, 200, 300, 10, 18, 0, 'c:/windows/fonts/simhei.ttf', 0, 0, 0);
// 设置图形
/*
* 第一个参数为图形部分位于整个图表的左上角横坐标
* 第二个参数为图形部分位于整个图表的左上角纵坐标
* 第三个参数为图形部分的宽度
* 第四个参数为图形部分的高度
* 第五个参数为图形与图形部分边框的间距（纵坐标标记的宽度）
* 第六个参数为3D阴影的相对比例或是轨迹图中圆点的直径
*/
$chart->setgraphics(10, 100, 500, 500, 50, 0.3);
// 输出图表
$chart->outputchart();
// 销毁实例
unset($chart);
?>
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