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,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);