Home > Backend Development > PHP Tutorial > PHP function code for drawing column chart_PHP tutorial

PHP function code for drawing column chart_PHP tutorial

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
Release: 2016-07-20 11:00:42
Original
938 people have browsed it

Let's take a look at the function code for drawing a column chart in PHP. It's too much to say, so let's take a look. It's too much to say. ​

Let’s take a look at the function code for drawing a column chart in PHP. It’s too much to say, so let’s take a look. It’s too much to say.

PHP function for making column chart

Keywords: PHP

#For convenience, I made another function to create a column chart
/*Parameter description:
$graphdata: Percentage data (y-axis)
$label:x-axis title
$data: actual data (y-axis)
$graphwidth:image width
$graphheight:image height
$graphscale: height factor (for $graphheight/100)
$graphfont: font number
$bg;Background color value
$text: text color value
$grid: Edge color value
$bar:Color value of bar
$bz: Remarks (Chinese is not supported)
*/
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);

}
?>


www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/445490.htmlTechArticleLet’s take a look at the function code for drawing a column chart in PHP. It’s too much to talk about. Look, there’s no need to talk too much. Let's take a look at the function for drawing column charts in PHP...
Related labels:
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Issues
php data acquisition?
From 1970-01-01 08:00:00
0
0
0
PHP extension intl
From 1970-01-01 08:00:00
0
0
0
How to learn php well
From 1970-01-01 08:00:00
0
0
0
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template