php汉字转码 GBK->Unicode(UTF8)编码转换

3. //php汉字转码 GBK->Unicode(UTF8)
4. class qswhGBK{
5. var $qswhData;
6. function qswhGBK($filename="qswhGBK.php"){
7. $this->qswhData=file($filename);
8. }
9. function gb2u($gb,$callback=""){
10. /******(qiushuiwuhen 2002-8-15)******/
11. $ret="";
12. for($i=0;$i if(($p=ord(substr($gb,$i,1)))>127){
14. $q=ord(substr($gb,++$i,1));
15. $q=($q-($q>128?65:64))*4;
16. $q=substr($this->qswhData[$p-128],$q,4);
17. }
18. else
19. $q=dechex($p);
20. if(empty($callback))
21. $ret.=$q;
22. else {
23. $arr=array("htmlHex","htmlDec","escape","u2utf8");
24. if(is_integer($callback)){
25. if($callback>count($arr))die("Invalid Function");
26. $ret.=$this->$arr[$callback-1]($q);
27. }else
28. $ret.=$callback($q);
29. }
30. }
31. return $ret;
32. }
34. function htmlHex($str){
35. return "".$str.";";
36. } // 程序员之家 bbs.it-home.org
38. function htmlDec($str){
39. return "".hexdec($str).";";
40. }
42. function escape($str){
43. return hexdec($str) }
45. function u2utf8($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. }

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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));
7. echo("/n调用内置函数htmlHex:".$qswh->gb2u($words,1));
8. echo("/n调用内置函数htmlDec:".$qswh->gb2u($words,2));
9. echo("/n调用内置函数escape:".$qswh->gb2u($words,3));
10. echo("/n调用内置函数u2utf8:".$qswh->gb2u($words,4));
11. echo("/n调用自定义函数:".$qswh->gb2u($words,ex));

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效果：

不带参数:4E2D6587416263 调用内置函数htmlHex:中文Abc 调用内置函数htmlDec:中文Abc 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]