php生成曲线图程序
php生成 曲线图 程序
<?php
/*******************用法*************************
$gg=new build_graph();
$d1=array(0,62,25,20,20,100,99); //曲线一
//$d1=array('15'=>5,'16'=>8,'17'=>7,'18'=>9,'19'=>10,'20'=>15,'21'=>9); 改成这个形式啦
$d2=array(0,80,75,65,100,56,79); //曲线二
$d3=array(0,60,50,25,12,56,45); //曲线三 一下可以继续以此类推
$gg->add_data($d1);
$gg->add_data($d2);
$gg->add_data($d3);
$gg->set_colors("ee00ff,dd8800,00ff00"); //对应曲线的颜色
//生成曲线图
$gg->build("line",0); //参数0表示显示所有曲线，1为显示第一条，依次类推
//生成矩形图
//$gg->build("rectangle","2"); //参数0表示显示第一个矩形，1也为显示第一条，其余依次类推
///////////////////////////////////////////////////////////
//自定义图形显示，可任意图形叠加显示
header("Content-type: image/png");
$gg->create_cloths(); //画布
$gg->create_frame(); //画个框先
//$gg->build_rectangle(2); //画矩形
$gg->create_line(); //画线
$gg->build_line(0); //画曲线
imagepng($gg->image);
imagedestroy($gg->image);
*/
class build_graph {
var $graphwidth=300;
var $graphheight=300;
var $width_num=0; //宽分多少等分
var $height_num=10; //高分多少等分，默认为10
var $height_var=0; //高度增量（用户数据平均数）
var $width_var=0; //宽度增量（用户数据平均数）
var $height_max=0; //最大数据值
var $array_data=array(); //用户待分析的数据的二维数组
var $array_error=array(); //收集错误信息
var $colorBg=array(255,255,255); //图形背景-白色
var $colorGrey=array(192,192,192); //灰色画框
var $colorBlue=array(0,0,255); //蓝色
var $colorRed=array(255,0,0); //红色（点）
var $colorDarkBlue=array(0,0,255); //深色
var $colorLightBlue=array(200,200,255); //浅色
var $array_color; //曲线着色（存储十六进制数）
var $image; //我们的图像
//方法：接受用户数据
function add_data($array_user_data)
{
if(!is_array($array_user_data) or empty($array_user_data))
{
$this->array_error['add_data']="没有可供分析的数据";
return false;
exit();
}
$i=count($this->array_data);
$this->array_data[$i]=$array_user_data;
}
//方法：定义画布宽和长
function set_img($img_width,$img_height){
$this->graphwidth=$img_width;
$this->graphheight=$img_height;
}
//设定Y轴的增量等分，默认为10份
function set_height_num($var_y){
$this->height_num=$var_y;
}
//定义各图形各部分色彩
function get_RGB($color){ //得到十进制色彩
$R=($color>>16) & 0xff;
$G=($color>>8) & 0xff;
$B=($color) & 0xff;
return (array($R,$G,$B));
}
//---------------------------------------------------------------
#定义背景色
function set_color_bg($c1,$c2,$c3){
$this->colorBg=array($c1,$c2,$c3);
}
#定义画框色
function set_color_Grey($c1,$c2,$c3){
$this->colorGrey=array($c1,$c2,$c3);
}
#定义蓝色
function set_color_Blue($c1,$c2,$c3){
$this->colorBlue=array($c1,$c2,$c3);
}
#定义色Red
function set_color_Red($c1,$c2,$c3){
$this->colorRed=array($c1,$c2,$c3);
}
#定义深色
function set_color_DarkBlue($c1,$c2,$c3){
$this->colorDarkBlue=array($c1,$c2,$c3);
}
#定义浅色
function set_color_LightBlue($c1,$c2,$c3){
$this->colorLightBlue=array($c1,$c2,$c3);
}
//---------------------------------------------------------------
//方法:由用户数据将画布分成若干等份宽
//并计算出每份多少像素
function get_width_num(){
$this->width_num=count($this->array_data[0]);
}
function get_max_height(){
//获得用户数据的最大值
$tmpvar=array();
foreach($this->array_data as $tmp_value)
{
$tmpvar[]=max($tmp_value);
}
$this->height_max=max($tmpvar);
return max($tmpvar);
}
function get_height_length(){
//计算出每格的增量长度(用户数据，而不是图形的像素值)
$max_var=$this->get_max_height();
$max_var=round($max_var/$this->height_num);
$first_num=substr($max_var,0,1);
if(substr($max_var,1,1)){
if(substr($max_var,1,1)>=5)
$first_num+=1;
}
for($i=1;$i<strlen($max_var);$i++){
$first_num.="0";
}
return (int)$first_num;
}
function get_var_wh() //得到高和宽的增量
{
$this->get_width_num();
//得到高度增量和宽度增量
$this->height_var=$this->get_height_length();
$this->width_var=round($this->graphwidth/$this->width_num);
}
function set_colors($str_colors){
//用于多条曲线的不同着色，如$str_colors="ee00ff,dd0000,cccccc"
$this->array_color=split(",",$str_colors);
}
######################################################################################################
function build_line($var_num)
{
if(!empty($var_num))
{ //如果用户只选择显示一条曲线
$array_tmp[0]=$this->array_data[$var_num-1];
$this->array_data=$array_tmp;
}
//画线
for($j=0;$j<count($this->array_data);$j++)
{
list($R,$G,$B)=$this->get_RGB(hexdec($this->array_color[$j]));
$colorBlue=imagecolorallocate($this->image,$R,$G,$B);
$i=0;
foreach($this->array_data[$j] as $keys=>$values)
{
$height_next_pix[]=round($this->array_data[$j][$keys]/$this->height_max*$this->graphheight);
}
foreach($this->array_data[$j] as $key=>$value)
{
$height_pix=round(($this->array_data[$j][$key]/$this->height_max)*$this->graphheight);
if($i!=count($this->array_data[$j])-1)
{
imageline($this->image,$this->width_var*$i,$this->graphheight-$height_pix,$this->width_var*($i+1),$this->graphheight-$height_next_pix[$i+1],$colorBlue);
}
$i++;
}
//print_r($height_next_pix);
// exit;
/*
for($i=0;$i<$this->width_num-1;$i++)
{
$height_pix=round(($this->array_data[$j][$i]/$this->height_max)*$this->graphheight);
$height_next_pix=round($this->array_data[$j][$i+1]/$this->height_max*$this->graphheight);
imageline($this->image,$this->width_var*$i,$this->graphheight-$height_pix,$this->width_var*($i+1),$this->graphheight-$height_next_pix,$colorBlue);
}*/
}
//画点
$colorRed=imagecolorallocate($this->image, $this->colorRed[0], $this->colorRed[1], $this->colorRed[2]);
for($j=0;$j<count($this->array_data);$j++)
{
$i=0;
foreach($this->array_data[$j] as $key=>$value)
{
$height_pix=round(($this->array_data[$j][$key]/$this->height_max)*$this->graphheight);
imagearc($this->image,$this->width_var*$i,$this->graphheight-$height_pix,6,5,0,360,$colorRed);
imagefilltoborder($this->image,$this->width_var*$i,$this->graphheight-$height_pix,$colorRed,$colorRed);
$i++;
}
/*
for($i=0;$i<$this->width_num;$i++)
{
$height_pix=round(($this->array_data[$j][$i]/$this->height_max)*$this->graphheight);
imagearc($this->image,$this->width_var*$i,$this->graphheight-$height_pix,6,5,0,360,$colorRed);
imagefilltoborder($this->image,$this->width_var*$i,$this->graphheight-$height_pix,$colorRed,$colorRed);
}
*/
}
}
######################################################################################################
function build_rectangle($select_gra){
if(!empty($select_gra)){ //用户选择显示一个矩形
$select_gra-=1;
}
//画矩形
//配色
$colorDarkBlue=imagecolorallocate($this->image, $this->colorDarkBlue[0], $this->colorDarkBlue[1], $this->colorDarkBlue[2]);
$colorLightBlue=imagecolorallocate($this->image, $this->colorLightBlue[0], $this->colorLightBlue[1], $this->colorLightBlue[2]);
if(empty($select_gra))
$select_gra=0;
for($i=0; $i<$this->width_num; $i++){
$height_pix=round(($this->array_data[$select_gra][$i]/$this->height_max)*$this->graphheight);
imagefilledrectangle($this->image,$this->width_var*$i,$this->graphheight-$height_pix,$this->width_var*($i+1),$this->graphheight, $colorDarkBlue);
imagefilledrectangle($this->image,($i*$this->width_var)+1,($this->graphheight-$height_pix)+1,$this->width_var*($i+1)-5,$this->graphheight-2, $colorLightBlue);
}
}
######################################################################################################
function create_cloths(){
//创建画布
$this->image=imagecreate($this->graphwidth+20,$this->graphheight+20);
}
function create_frame(){
//创建画框
$this->get_var_wh();
//配色
$colorBg=imagecolorallocate($this->image, $this->colorBg[0], $this->colorBg[1], $this->colorBg[2]);
$colorGrey=imagecolorallocate($this->image, $this->colorGrey[0], $this->colorGrey[1], $this->colorGrey[2]);
//创建图像周围的框
imageline($this->image, 0, 0, 0, $this->graphheight,$colorGrey);
imageline($this->image, 0, 0, $this->graphwidth, 0,$colorGrey);
imageline($this->image, ($this->graphwidth-1),0,($this->graphwidth-1),($this->graphheight-1),$colorGrey);
imageline($this->image, 0,($this->graphheight-1),($this->graphwidth-1),($this->graphheight-1),$colorGrey);
}
function create_line()
{
//创建网格。
$this->get_var_wh();
$colorBg=imagecolorallocate($this->image, $this->colorBg[0], $this->colorBg[1], $this->colorBg[2]);
$colorGrey=imagecolorallocate($this->image, $this->colorGrey[0], $this->colorGrey[1], $this->colorGrey[2]);
$colorRed=imagecolorallocate($this->image, $this->colorRed[0], $this->colorRed[1], $this->colorRed[2]);
for($i=1;$i<=$this->height_num;$i++)
{
//画横线
$y1=($this->graphheight-($this->height_var/$this->height_max*$this->graphheight)*$i);
$y2=($this->graphheight-($this->height_var/$this->height_max*$this->graphheight)*$i);
imageline($this->image,0,$y1,$this->graphwidth,$y2,$colorGrey);
//标出数字
imagestring($this->image,2,0,$this->graphheight-($this->height_var/$this->height_max*$this->graphheight)*$i,$this->height_var*$i,$colorRed);
}
unset($i);
foreach($this->array_data[0] as $key=>$value)
{
//画竖线
imageline($this->image,$this->width_var*$i,0,$this->width_var*$i,$this->graphwidth,$colorGrey);
//标出数字
imagestring($this->image,2,$this->width_var*$i,$this->graphheight-15,$key,$colorRed);
$i++;
}
/*
for($i=1;$i<=$this->width_num;$i++)
{
//画竖线
imageline($this->image,$this->width_var*$i,0,$this->width_var*$i,$this->graphwidth,$colorGrey);
//标出数字
imagestring($this->image,2,$this->width_var*$i,$this->graphheight-15,$i,$colorRed);
}
*/
}
function build($graph,$str_var){
//$graph是用户指定的图形种类,$str_var是生成哪个数据的图
header("Content-type: image/jpeg");
$this->create_cloths(); //先要有画布啊~~
switch ($graph){
case "line":
$this->create_frame(); //画个框先：）
$this->create_line(); //打上底格线
$this->build_line($str_var); //画曲线
break;
case "rectangle":
$this->create_frame(); //画个框先：）
$this->build_rectangle($str_var); //画矩形
$this->create_line(); //打上底格线
break;
}
//输出图形并清除内存
imagepng($this->image);
imagedestroy($this->image);
}
}
?>