php柱状图生成类代码

php柱状图生成类代码 //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

php教程柱状图生成类代码
//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

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                                 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                                 imagestringup ( $im, 4, 2, $height - $j * 10 + 10, $j * 10, $linecolor);
                                $j = $j + 10;
                        }
                        while($k                                 if($k != 0)
                                imageline ( $im, 28, $height - $k * 10, 32 , $height - $k * 10,$linecolor);
                                $k = $k + 10;
                        }
                        imagepng($im);
                }

//调用方法：

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);