欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  后端开发

PHP的 GB2312-UTF-8 转换函数_PHP

程序员文章站 2024-02-20 10:25:34
...
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);
?>


====================================