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($array_user_data) or emptyempty($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 (!emptyempty($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 (!emptyempty($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], $this->colorLightBlue[2]);
if (emptyempty($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() { //开源代码phprm.com
//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);
}
}文章网址:http://www.phprm.com/tuxiang/fs4503.html
随意转载^^但请附上教程地址。