PHP Chinese character conversion GBK-Big5_PHP tutorial

Chinese character conversion in php has always been a troublesome thing
First of all, there are two points:
1. The traditional Chinese characters in GBK are not Big5, but generally traditional Chinese characters have corresponding Big codes
2. A GBK code does not necessarily have a corresponding Big5 code, so it is generally an irreversible conversion
This class has three built-in functions
qswhStr format string
qswhFile format a file
qswhDir format directory Download all files (except .qswh, which is a backup of the original document)
qswhBig5.php Download from here
http://www.blueidea.com/user/qswh/qswhBig5.zip

class qswhBig5{
var $qswhData;
function qswhBig5($filename="qswhBig5.php"){
$this->qswhData=file($filename);
}
function qswhStr($gb,$fail="??"){
/******(qiushuiwuhen 2002-9-6)******/
$ret="";
for($i=0;$i if(($p=ord(substr($gb,$i,1)))>127){
$q=ord(substr($gb,+ +$i,1));
$tmp=$this->qswhData[$p-128];
for($j=0;$j=$q)break;
if($k==$q)$q=chr(hexdec(substr($tmp,$j+2,2))).chr(hexdec(substr($tmp,$j+4,2)));
else if($fail=="")$q=chr($p).chr($q); else $q=$fail;
}
else
$q=chr ($p);
$ret.=$q;

}
return $ret;
}
function qswhFile($filename,$fail="??") {
/******(qiushuiwuhen 2002-9-6)******/
if(!file_exists($filename.".qswh"))copy($filename,$filename.".qswh");
$fp=fopen ($filename,"r+");
$tmp=fread($fp,filesize($filename));
rewind($fp);
fwrite($fp,$this->qswhStr( $tmp,$fail));
fclose($fp);
}
function qswhDir($dirname,$fail="??"){
/******(qiushuiwuhen 2002-9-6)******/
$d = dir($dirname);
while($entry=$d->read()) {
if($entry=="."||$entry==".. ")continue;
$entry=$dirname."/".$entry;
if(is_dir($entry))
$this->qswhDir($entry,$fail);
else{
if(substr($entry,-5)!=".qswh")$this->qswhFile($entry,$fail);
}
}
$d-> close();
return $c;
}
}
Usage example:
$words="Qiushui Wuhen";
$qswh=new qswhBig5("qswhBig5.php ");//qswhBig5.php, you can save parameters
echo("Please select the encoding Big5 to view: ".$qswh->qswhStr($words));<br>echo(" Encoding a directory: ".$qswh->qswhDir("test"));<br>echo(" Encode a file: ".$qswh->qswhFile("index.htm"));<br>Instructions for use: <br>The second parameter in qswhStr represents the word that Big5 will replace if there is no corresponding one. If it is empty, Then keep this word <br> After formatting the file, remember to modify it <meta> <p align="left"></p> <div style="display:none;"> <span id="url" itemprop="url">http://www.bkjia.com/PHPjc/532057.html</span><span id="indexUrl" itemprop="indexUrl">www.bkjia.com</span><span id="isOriginal" itemprop="isOriginal">true</span><span id="isBasedOnUrl" itemprop="isBasedOnUrl">http: //www.bkjia.com/PHPjc/532057.html</span><span id="genre" itemprop="genre">TechArticle</span><span id="description" itemprop="description">PHP’s Chinese character conversion has always been a troublesome thing. First of all, I have to say two points: 1. The traditional Chinese characters of GBK are not Big5, but generally traditional Chinese characters have corresponding Big codes 2. A GBK code does not necessarily have a corresponding Big5 code...</span> </div>