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php汉字转码Unicode(UTF8)至GBK编码转换

时间:2021-07-01 10:21:17 帮助过:39人阅读

  1. //php汉字转码
  2. class qswhU{
  3. var $qswhData;
  4. function qswhU($filename="qswhU.php"){
  5. $this->qswhData=file($filename);
  6. }
  7. function decode($str,$pattern=0){
  8. $arr=array("/&#(/w+);/iU","/((%/w/w)+)/i","/%u(/w{4,5})/iU");
  9. if(is_integer($pattern)){
  10. if($pattern>=count($arr))die("Invalid Function");
  11. $pattern=$arr[$pattern];
  12. }
  13. return preg_replace_callback($pattern,array($this,"u2gb"),$str);
  14. } // 程序员之家 bbs.it-home.org
  15. function u2gb($arr){
  16. /******(qiushuiwuhen 2002-8-15)******/
  17. $ret="";$str=$arr[1];
  18. if(preg_match_all("/%/w{2}/",$str,$matches)){
  19. for($i=0;$i $chr1=hexdec(substr($matches[0][$i],1));
  20. $arr=array("f0","e0","c0","0");
  21. for($j=0;$jhexdec($arr[$j]))break;
  22. $chr=hexdec(substr($matches[0][$i],1))-hexdec($arr[$j]);
  23. while(++$j $str=dechex($chr);
  24. if(strlen($str)==4){
  25. $p=hexdec(substr($str,0,2))-0x4d;
  26. $q=hexdec(substr($str,2))*4;
  27. $ret.=chr(hexdec(substr($this->qswhData[$p],$q,2)));
  28. $ret.=chr(hexdec(substr($this->qswhData[$p],$q+2,2)));
  29. }else
  30. $ret.=chr(hexdec($str));
  31. }
  32. }
  33. else{
  34. if(strtolower($str[0])=="x")
  35. $str=substr($str,1);
  36. else
  37. if(strlen($str)!=4)$str=dechex($str);
  38. if(strlen($str)==4){
  39. $p=hexdec(substr($str,0,2))-0x4d;
  40. $q=hexdec(substr($str,2))*4;
  41. $ret.=chr(hexdec(substr($this->qswhData[$p],$q,2)));
  42. $ret.=chr(hexdec(substr($this->qswhData[$p],$q+2,2)));
  43. }else
  44. $ret.=chr(hexdec($str));
  45. }
  46. return $ret;
  47. }
  48. }

使用实例:

  1. $qswh=new qswhU("qswhU.php");//如果文件名是qswhU.php,可省参数
  2. echo "不带参数(默认过滤为:&#[num];):";<li>echo "/n".$qswh->decode("&#x4E2D;&#x6587;&#x41;&#x62;&#x63;");<li>echo "/n".$qswh->decode("&#20013;&#25991;&#65;&#98;&#99;");<li>echo "/n调用内置过滤(UTF转码):".$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);<li>echo "/n调用内置过滤unescape(%u[num]):".$qswh->decode("%u4E2D%u6587Abc",2);<li>echo "/n自定义过滤([x+num]):".$qswh->decode("[x4E2D][x6587][x41][x62][x63]","//[(/w+)/]/");</ol><em onclick="copycode($('code_HJP'));"></em><p>效果如下: 不带参数(默认过滤为:&#[num];): 中文Abc 中文Abc 调用内置过滤(UTF转码):中文 !"#$%&'()*+,/:;<=>?@[]^`{|}~%Abc 调用内置过滤unescape(%u[num]):中文Abc 自定义过滤([x+num]):中文Abc</p></td></tr></table> </div> <div class=""> <ul class="m-news-opt fix"> <li class="opt-item"> <a href='/PHPjiqiao-176327.html' target='_blank'><p>< 上一篇</p><p class="ellipsis">php过滤字符串函数示例</p></a> </li> <li class="opt-item ta-r"> <a href='/PHPjiqiao-176329.html' target='_blank'><p>下一篇 ></p><p class="ellipsis">PHP模板引擎Smarty缓存使用</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 class="m-rank u-dashed mb40"> <ul> <li class="rank-item"> <a href="/PHPjiqiao-379253.html" title='php如何获取跳转前的url' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">174次</span> <span class="g-sort-num top">1</span> php如何获取跳转前的url </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-379019.html" title='php格林威治时间转换成当前时间的方法' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">174次</span> <span class="g-sort-num second">2</span> php格林威治时间转换成当前时间的方法 </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-366629.html" title='为什么php不能做大型系统?' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">174次</span> <span class="g-sort-num third">3</span> 为什么php不能做大型系统? 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