以下是一段gb2312 -> utf-8 的函数，我抄了
unicode -> utf-8 的算法，所以实际比gb2312->unicode
没多多少东西,请大家注意调用gb2utf8()时不能中英文混用
程序需要的gb2312.txt文件
//program writen by sadly www.phpx.com
//gb2utf8.php
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);
$utf8=;
while($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]));
}
else
{
$gb=substr($gb,1,strlen($gb));
$utf8.=u2utf8(substr($gb,0,1));
}
}
$ret=;
for($i=0;$i$ret.=chr(substr($utf8,$i,3));
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;
}
?>
调用举例:通过gd输出 中国 两个汉字
example.php
//header(content-type: image/gif);
$im = imagecreate(400,300);
$bkg = imagecolorallocate($im, 0,0,0);
$clr = imagecolorallocate($im, 255,255,255);
$fnt = d:/winnt/fonts/simhei.ttf;
include(gb2utf8.php);
$str = gb2utf8(中国);
imagettftext($im, 20, 0, 10, 20, $clr, $fnt, $str);
imagegif($im);
imagedestroy($im);
?>
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http://www.bkjia.com/phpjc/445195.htmlwww.bkjia.comtruehttp://www.bkjia.com/phpjc/445195.htmltecharticle以下是一段gb2312 - utf-8 的函数，我抄了 unicode - utf-8 的算法，所以实际比gb2312-unicode 没多多少东西,请大家注意调用gb2utf8()时不能中英文混用...