贴段PHP画图的程序，给希望用PHP作图的朋友一点启发，帮助！_PHP

主要包括三个文件：
1、view.php是调用程序。
2、chart.php是用来生成图表的程序。
3、gbtoutf8.php是用来中文解码的（注：已解决中英文混合不能正常显示的问题）

1、view.php

include("gbtoutf8.php");
?>






/*此处数据可从数据库中取得*/
$aStr = "IT,PC,Phone,Sever,Passport,Software";
$aSoft = "Win2000,Win98,Office,Foxmail,Outlook";
$aHard = gb2utf8("地板,窗户,玻璃,桌子,灯管,植被");
$title1 = gb2utf8('2002年IT维护report');
$title2 = gb2utf8('2002年软件维护report');
$title3 = gb2utf8('2002年固定资产report');
?>

2、chart.php
/*
* 功能：生成统计图表
* 程序员：wlxz
*　日期：2002-00-00
*/

Header("Content-type: image/png");
$im = ImageCreate (350, 280);
$col_oth = ImageColorAllocate($im, 0,0,0);
$col_orn = ImageColorAllocate($im, 255,192,0);
$col_yel = ImageColorAllocate($im, 255,255,0);
$col_red = ImageColorAllocate($im, 255,0,0);
$col_grn = ImageColorAllocate($im, 0,255,0);
$col_blu = ImageColorAllocate($im, 0,0,255);
$col_wit = ImageColorAllocate($im, 255,255,255);
$col_array = array($col_oth, $col_orn, $col_yel, $col_red, $col_grn, $col_blu);

$dot1 = 28;
$dot2 = 20;
$font="c:/winnt/fonts/simhei.ttf";
$aStr = explode(",", trim($_GET['aStr']));
$title = trim($_GET['title']);

ImageTTFText($im,18,0,100,50,$col_wit,$font,$title);//写标题

for($i=1;$i ImageFilledRectangle($im,50*$i-$dot2,$dot1*$i,50*$i,200,$col_array[$i]);
ImageRectangle($im,50*$i-$dot2,$dot1*$i,50*$i,200,$col_wit);
ImageRectangle($im,50*$i-$dot2-1,$dot1*$i-1,50*$i+1,200,$col_wit);
ImageTTFText($im,14,270,50*$i-15,205,$col_wit,$font,$aStr[$i-1]);

// ImageLine($im,50*$i-$dot2,$dot1*$i,50*$i-$dot2,200,$col_wit);
ImageLine($im,50*$i-$dot2,$dot1*$i,50*$i,$dot1*$i,$col_wit);
}
ImageRectangle($im,10,10,300,200,$col_wit);
ImageRectangle($im,11,11,301,201,$col_wit);

//右边百分比
for($i=1;$i ImageLine($im,300,$i*33,306,$i*33,$col_wit);
$str = (100-$i*5)."%";
ImageTTFText($im,14,0,315,$i*33+2,$col_wit,$font,$str);
}

ImagePNG($im);
ImageDestroy($im);
?>

3.gbtoutf8.php

/*
* 功能：把GB2312编码转换成UTF-8的编码
* 程序员：wlxz
*　日期：2002-00-00
*/

function gb2utf8($gb){
if(!trim($gb))
return $gb;

$filename="gb2312.txt";
$tmp=file($filename);
$codetable=array();

while(list($key,$value)=each($tmp))
$codetable[hexdec(substr($value,0,6))]=substr($value,7,6);

$ret="";
$utf8="";

while($gb){
if (ord(substr($gb,0,1))>127)
{
$this=substr($gb,0,2);
$gb=substr($gb,2,strlen($gb));
$utf8=u2utf8(hexdec($codetable[hexdec(bin2hex($this))-0x8080]));

for($i=0;$i $ret.=chr(substr($utf8,$i,3));
}
else{
$ret.=substr($gb,0,1);
$gb=substr($gb,1,strlen($gb));
}
}

return $ret;
}

function u2utf8($c){
for($i=0;$i $str="";

if ($c $str.=$c;
}
else if ($c $str.=(0xC0 | $c>>6);
$str.=(0x80 | $c & 0x3F);
}
else if ($c $str.=(0xE0 | $c>>12);
$str.=(0x80 | $c>>6 & 0x3F);
$str.=(0x80 | $c & 0x3F);
}
else if ($c $str.=(0xF0 | $c>>18);
$str.=(0x80 | $c>>12 & 0x3F);
$str.=(0x80 | $c>>6 & 0x3F);
$str.=(0x80 | $c & 0x3F);
}

return $str;
}


function gb2unicode($gb){
if(!trim($gb))
return $gb;

$filename="gb2312.txt";
$tmp=file($filename);
$codetable=array();

while(list($key,$value)=each($tmp))
$codetable[hexdec(substr($value,0,6))]=substr($value,9,4);
$utf="";
while($gb){
if (ord(substr($gb,0,1))>127){
$this=substr($gb,0,2);
$gb=substr($gb,2,strlen($gb));
$utf.="".$codetable[hexdec(bin2hex($this))-0x8080].";";
}
else{
$gb=substr($gb,1,strlen($gb));
$utf.=substr($gb,0,1);
}
}
return $utf;
}
?>