php绘制柱型图的函数代码
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php做柱型图的函数
<?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);
}
?>文章网址:http://www.phprm.com/function/ad4c77325d7105df729a724300c976f9.html
随意转载^^但请附上教程地址。