PHP Chinese character conversion has always been a troublesome thing
This class has four built-in filters "[dec];", "[hex];", "%u[hex]", "utf8 conversion "
It is convenient for users to use, and you can also customize filtering to perform your favorite operations
qswhU.php Download from here
http://www.blueidea.com/user/qswh/qswhU.zip
class qswhU{
var $qswhData;
function qswhU($filename="qswhU.php"){
$this->qswhData=file($filename);
}
function decode($str,$pattern=0){
$arr=array("/(w+);/iU","/((%ww)+)/i","/%u(w{4,5})/iU");
if( is_integer($pattern)){
if($pattern>=count($arr))die("Invalid Function");
$pattern=$arr[$pattern];
}
return preg_replace_callback($pattern,array( $this,"u2gb"),$str);
}
function u2gb($arr){
/******(qiushuiwuhen 2002-8-15)******/
$ret="";$str=$arr[1];
if (preg_match_all("/%w{2}/",$str,$matches)){
for($i=0;$i $chr1=hexdec (substr($matches[0][$i],1));
$arr=array("f0","e0","c0","0");
for($j=0;$j< ;count($arr);$j++)if($chr1>hexdec($arr[$j]))break;
$chr=hexdec(substr($matches[0][$i],1))-hexdec ($arr[$j]);
while(++$j $str=dechex($chr);
if(strlen($str)==4){
$p=hexdec(substr($str,0,2))-0x4d;
$q= hexdec(substr($str,2))*4;
$ret.=chr(hexdec(substr($this->qswhData[$p],$q,2)));
$ret.=chr( hexdec(substr($this->qswhData[$p],$q+2,2)));
}else
$ret.=chr(hexdec($str));
}
}
else{
if(strtolower($str[0])=="x")
$str=substr($str,1);
else
if(strlen($str)!=4)$str=dechex($str) ;
if(strlen($str)==4){
$p=hexdec(substr($str,0,2))-0x4d;
$q=hexdec(substr($str,2))*4 ;
$ret.=chr(hexdec(substr($this->qswhData[$p],$q,2)));
$ret.=chr(hexdec(substr($this->qswhData[$ p],$q+2,2)));
}else
$ret.=chr(hexdec($str));
}
return $ret;
}
}
Usage example
$qswh=new qswhU("qswhU.php");//If the file name is qswhU.php, parameters can be omitted
echo "
<![CDATA[Without parameters (default filtering is: [num];):" ;<br>echo "n".$qswh->decode("中文Abc");<br>echo "n".$qswh->decode ("中文Abc");<br>echo "nCall built-in filtering (UTF transcoding):".$qswh->decode("%E4 %B8%AD%E6%96%87%20!%22%23%24%25%26'()*%2B%2C%2F%3A%3B%3C%3D%3E%3F%40%5B% 5D%5E%60%7B%7C%7D~%25Abc",1);<br>echo "nCall the built-in filter unescape(%u[num]):".$qswh->decode("%u4E2D%u6587Abc" ,2);<br>echo "ncustom filter([x+num]):".$qswh->decode("[x4E2D][x6587][x41][x62][x63]","/[( w+)]/");</p>
<p>The effect is as follows:<br>Without parameters (default filtering is: [num];):<br>Chinese Abc<br>Chinese Abc<br>Call the built-in filtering (UTF transcoding): Chinese!"#$ %&'()*+,/:;<=>?@[]^`{|}~%Abc<br>Call the built-in filter unescape(%u[num]): Chinese Abc<br>custom filter ([x +num]):Chinese Abc</p>
<p><br></p> </div>
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