php柱状图生成类代码

发布:smiling　来源: PHP粉丝网　添加日期：2014-08-19 15:52:59　浏览: 评论：0　

这是一段完美的php柱状图生成类代码,可以生成漂亮实用的柱状图,代码如下:

function createimage($data,$twidth,$tspace,$height){

                        $dataname = array();

                        $datavalue = array();

                        $i = 0;

                        $j = 0;

                        $k = 0;

                        $num = sizeof($data);



                        foreach($data as $key => $val){

                                        $dataname[] = $key;

                                        $datavalue[] = $val;

                                }



                        $maxnum = max($data);

                        $width = ($twidth + $tspace) * $num + 4;//image's width

                        $im = imagecreate($width + 40,$height+20);

                        $linecolor = imagecolorallocate($im,12,12,12);

                        $bgcolor = imagecolorallocate($im,235,233,233);

                        $tcolor = imagecolorallocate($im,123,200,56);

                        imagefill($im,0,0,$bgcolor);

                        imageline ( $im, 30, 0, 30, $height - 2, $linecolor);

                        imageline ( $im, 30, $height - 2, $width + 30 -2 , $height - 2,$linecolor);

                        while($i < $num){

                                imagefilledrectangle ( $im, $i * ($tspace+$twidth) + 40, $height - $datavalue[$i], $i * ($tspace+$twidth) + 40 + $twidth, $height - 3, $tcolor);

                                imagestringup ( $im, 4, $i * ($tspace+$twidth) + $twidth/2 + 30, $height - 10, $dataname[$i]."(".$datavalue[$i].")", $linecolor);

                                $i++;

                        }

                        while($j <= (500/10)){

                                imagestringup ( $im, 4, 2, $height - $j * 10 + 10, $j * 10, $linecolor);

                                $j = $j + 10;

                        }

                        while($k <= (500/10)){

                                if($k != 0)

                                imageline ( $im, 28, $height - $k * 10, 32 , $height - $k * 10,$linecolor);

                                $k = $k + 10;

                        }//开源代码phpfensi.com

                        imagepng($im);

                }

调用方法,代码如下:

header("content-type:image/png");

$data = array("yahoo" => 120, "google" => 260,"microsoft" => 320,"ibm" => 290,"sun system" => 150,"inter" => 260);

createimage($data,38,25,460);