关键词：PHP



#为了方便起见，我又做了一个函数来制作柱型图

/*参数说明：

$graphdata:百分比数据(y轴)

$label:x轴标题

$data:实际数据(y轴)

$graphwidth:图像宽度

$graphheight:图像高度

$graphscale:高度因子(为$graphheight/100)

$graphfont:字体号

$bg;背景颜色值

$text:文本颜色值

$grid:边线颜色值

$bar:柱的颜色值

$bz:备注(不支持中文呀)

*/

function timage(

$graphdata,$label,$data,

$graphwidth,$graphheight,$graphscale,$graphfont,

$bg,$text,$grid,$bar,$bz)

{



header("Content-type:image/gif");

$image=imagecreate($graphwidth+50,$graphheight+50);

$bgcolor= imagecolorallocate ($image ,$bg[0],$bg[1],$bg[2]);

$textcolor= imagecolorallocate ($image ,$text[0],$text[1],$text[2]);

$gridcolor=imagecolorallocate ($image ,$grid[0],$grid[1],$grid[2]);

$barcolor=imagecolorallocate ($image ,$bar[0],$bar[1],$bar[2]);

$gridabelwidth=imagefontwidth($graphfont)*3+1;

$gridableheight= imagefontheight ($graphfont);

imageline($image,$gridlabelwidth,0,$gridlabelwidth,$graphheight-1,$gridcolor);

imageline($image,0,$graphheight-1,$graphwidth-1,$graphheight-1,$gridcolor);

for($i=0;$i<$graphheight;$i+=$graphheight/10)

{

imagedashedline ($image,0,$i,$graphwidth-1,$i,$gridcolor);

imagestring($image,$graphfont,0,$i,round(($graphheight-$i)/$graphscale),$textcolor);

}



$barwidth=(($graphwidth-$gridlabelwidth)/count($graphdata))-30;#¿ØÖÆÖùµÄ×Ü¿í¶È

for($i=0;$i {

$bartopx=$gridlabelwidth+(($i+1)*20)+($i*$barwidth);#¿ØÖÆÖù¿¿×óµÄ¾àÀë

$barbottomx=$bartopx+$barwidth;

$barbottomy=$graphheight-1;#¿ØÖÆÖùµÄϱ߽ç

$bartopy=$barbottomy-($graphdata[$i]*$graphscale);

imagefilledrectangle($image,$bartopx,$bartopy,$barbottomx,$barbottomy,$barcolor);

$labelx1=$bartopx;

$labely1=$bartopy-15;

$labelx2=$bartopx;

$labely2=$graphheight;

imagestring($image,$graphfont,$labelx1,$labely1,"$graphdata[$i]"."%",$textcolor);

imagestring($image,$graphfont,$labelx2,$labely2,"$label[$i]",$textcolor);

imagestringup ($image,$graphfont,$labelx1+10,$labely1-$gridableheight,"$data[$i]",$textcolor);

}

imagestring($image,$graphfont,1,$graphheight+30,$bz,$textcolor);

imagegif ($image);



}

?>