php汉字转码GBK->Unicode(UTF8)编码转换

2. //php汉字转码 GBK->Unicode(UTF8)
3. class qswhGBK{
4. var $qswhData;
5. function qswhGBK($filename="qswhGBK.php"){
6. $this->qswhData=file($filename);
7. }
8. function gb2u($gb,$callback=""){
9. /******(qiushuiwuhen 2002-8-15)******/
10. $ret="";
11. for($i=0;$i if(($p=ord(substr($gb,$i,1)))>127){
13. $q=ord(substr($gb,++$i,1));
14. $q=($q-($q>128?65:64))*4;
15. $q=substr($this->qswhData[$p-128],$q,4);
16. }
17. else
18. $q=dechex($p);
19. if(empty($callback))
20. $ret.=$q;
21. else {
22. $arr=array("htmlHex","htmlDec","escape","u2utf8");
23. if(is_integer($callback)){
24. if($callback>count($arr))die("Invalid Function");
25. $ret.=$this->$arr[$callback-1]($q);
26. }else
27. $ret.=$callback($q);
28. }
29. }
30. return $ret;
31. }
33. function htmlHex($str){
34. return "&#x".$str.";";
35. } // 程序员之家 bbs.it-home.org
37. function htmlDec($str){
38. return "&#".hexdec($str).";";
39. }
41. function escape($str){
42. return hexdec($str)<256?chr(hexdec($str)):"%u".$str;
43. }
45. function u2utf8($str){
46. /******(qiushuiwuhen 2002-8-15)******/
47. $sp="!'()*-.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~";
48. $dec=hexdec($str);
49. $bin=decbin($dec);
50. $len=strlen($bin);
51. $arr=array("c0","e0","f0");
52. if($dec>0x7f){
53. $ret="";
54. for($i=$len,$j=-1;$i>=0;$i-=6,$j++){
55. if($i>6)
56. $ret="%".dechex(0x80+bindec(substr($bin,$i-6,6))).$ret;
57. else
58. $ret="%".dechex(hexdec($arr[$j])+bindec(substr($bin,0,6-$i))).$ret;
59. }
60. }else{
61. if(strpos($sp,chr($dec)))
62. $ret=chr($dec);
63. else
64. $ret="%".strtolower($str);
65. }
66. return $ret;
67. }
68. }

调用例子：

3. $words="中文Abc";

4. function ex($str){return "[".$str."]";}

5. $qswh=new qswhGBK("qswhGBK.php");//如果文件名是qswhGBK.php,可省参数

6. echo("

   不带参数:".$qswh->gb2u($words));<li>echo("/n调用内置函数htmlHex:".$qswh->gb2u($words,1));<li>echo("/n调用内置函数htmlDec:".$qswh->gb2u($words,2));<li>echo("/n调用内置函数escape:".$qswh->gb2u($words,3));<li>echo("/n调用内置函数u2utf8:".$qswh->gb2u($words,4));<li>echo("/n调用自定义函数:".$qswh->gb2u($words,ex));</p><li></ol><em onclick="copycode($('code_sd4'));"></em><p>效果： </p> 不带参数:4E2D6587416263 调用内置函数htmlHex:&#x4E2D;&#x6587;&#x41;&#x62;&#x63; 调用内置函数htmlDec:&#20013;&#25991;&#65;&#98;&#99; 调用内置函数escape:%u4E2D%u6587Abc 调用内置函数u2utf8:%e4%b8%ad%e6%96%87Abc 调用自定义函数:[4E2D][6587][41][62][63]</td></tr></table> </div> <div class=""> <ul class="m-news-opt fix"> <li class="opt-item"> <a href='/PHPjiqiao-176386.html' target='_blank'><p>< 上一篇</p><p class="ellipsis">伟大程序员的十大特质</p></a> </li> <li class="opt-item ta-r"> <a href='/PHPjiqiao-176388.html' target='_blank'><p>下一篇 ></p><p class="ellipsis">去除php注释与空格函数</p></a> </li> </ul> </div> </div> </div> <div class="g-title fix"> <h2 class="title-txt">人气教程排行</h2> </div> <div 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