有时候项目中会用到繁体转简体。怎么实现的呢？今天小班为大家收集了一个类文件，需要用的时候实例化调用就可以了
<?php
/***************************************************************************
* big2gb.php
* --------------
* begin : Friday, Jan 3, 2003
* author : CRLin
* url : http://web.dhjh.tcc.edu.tw/~gzqbyr/forum/
*
* $Id: big2gb.php,v 1.0.0 2006/4/24 14:43:44 Exp $
*
****************************************************************************/
/***************************************************************************
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
***************************************************************************/
define("_FILE_DIR" , dirname(__FILE__) );
class big2gb
{
function chg_utfcode($str,$charset='big5')
{
if ($charset=='big5')
{
$fd = fopen(_FILE_DIR."/gb2big.map",'r');
$str1 = fread($fd,filesize(_FILE_DIR."/gb2big.map"));
}
else
{
$fd = fopen(_FILE_DIR."/big2gb.map",'r');
$str1 = fread($fd,filesize(_FILE_DIR."/big2gb.map"));
}
fclose($fd);
// convert to unicode and map code
$chg_utf = array();
for ($i=0;$i<strlen($str1);$i=$i+4)
{
$ch1=ord(substr($str1,$i,1))*256;
$ch2=ord(substr($str1,$i+1,1));
$ch1=$ch1+$ch2;
$ch3=ord(substr($str1,$i+2,1))*256;
$ch4=ord(substr($str1,$i+3,1));
$ch3=$ch3+$ch4;
$chg_utf[$ch1]=$ch3;
}
// convert to UTF-8
$outstr='';
for ($k=0;$k<strlen($str);$k++)
{
$ch=ord(substr($str,$k,1));
if ($ch<0x80)
{
$outstr.=substr($str,$k,1);
}
else
{
if ($ch>0xBF && $ch<0xFE)
{
if ($ch<0xE0) {
$i=1;
$uni_code=$ch-0xC0;
} elseif ($ch<0xF0) {
$i=2;
$uni_code=$ch-0xE0;
} elseif ($ch<0xF8) {
$i=3;
$uni_code=$ch-0xF0;
} elseif ($ch<0xFC) {
$i=4;
$uni_code=$ch-0xF8;
} else {
$i=5;
$uni_code=$ch-0xFC;
}
}
$ch1=substr($str,$k,1);
for ($j=0;$j<$i;$j++)
{
$ch1 .= substr($str,$k+$j+1,1);
$ch=ord(substr($str,$k+$j+1,1))-0x80;
$uni_code=$uni_code*64+$ch;
}
if (!$chg_utf[$uni_code])
{
$outstr.=$ch1;
}
else
{
$outstr.=$this->uni2utf($chg_utf[$uni_code]);
}
$k += $i;
}
}
return $outstr;
}
// Return utf-8 character
function uni2utf($uni_code)
{
if ($uni_code<0x80) return chr($uni_code);
$i=0;
$outstr='';
while ($uni_code>63) // 2^6=64
{
$outstr=chr($uni_code%64+0x80).$outstr;
$uni_code=floor($uni_code/64);
$i++;
}
switch($i)
{
case 1:
$outstr=chr($uni_code+0xC0).$outstr;break;
case 2:
$outstr=chr($uni_code+0xE0).$outstr;break;
case 3:
$outstr=chr($uni_code+0xF0).$outstr;break;
case 4:
$outstr=chr($uni_code+0xF8).$outstr;break;
case 5:
$outstr=chr($uni_code+0xFC).$outstr;break;
default:
echo "unicode error!!";exit;
}
return $outstr;
}
}
?>
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