PHP做成Javascript中的escape及unescape函数代码分享

这篇文章主要介绍了PHP实现Javascript中的escape及unescape函数代码分享,本文给出两个实现版本,需要的朋友可以参考下

这个类相当好用.作用么,PHP做JSON传递GBK字符,比如中文,日文,韩文神马的Unicode最合适不过了..

<?php 

classcoding 

{ 

  //模仿JAVASCRIPT的ESCAPE和UNESCAPE函数的功能  

  functionunescape($str) 

  { 

    $text=preg_replace_callback("/%u[0-9A-Za-z]{4}/",array( 

      &$this, 

      'toUtf8' 

    ),$str); 

    returnmb_convert_encoding($text,"gb2312","utf-8"); 

  }    

  functiontoUtf8($ar) 

  { 

    foreach($aras$val){ 

      $val=intval(substr($val,2),16); 

      if($val<0x7F){// 0000-007F  

        $c.=chr($val); 

      }elseif($val<0x800){// 0080-0800  

        $c.=chr(0xC0|($val/64)); 

        $c.=chr(0x80|($val%64)); 

      }else{// 0800-FFFF  

        $c.=chr(0xE0|(($val/64)/64)); 

        $c.=chr(0x80|(($val/64)%64)); 

        $c.=chr(0x80|($val%64)); 

      } 

    } 

    return$c; 

  }  

  functionescape($string,$encoding='gb2312') 

  { 

    $return=''; 

    for($x=0;$x<mb_strlen($string,$encoding);$x++){ 

      $str=mb_substr($string,$x,1,$encoding); 

      if(strlen($str)>1){// 多字节字符  

        $return.='%u'.strtoupper(bin2hex(mb_convert_encoding($str,'UCS-2',$encoding))); 

      }else{ 

        $return.='%'.strtoupper(bin2hex($str)); 

      } 

    } 

    return$return; 

  } 

  functiongb2utf8($string,$encoding='utf-8',$from_encode='gb2312') 

  { 

    returnmb_convert_encoding($string,$encoding,$from_encode); 

  }    

} 

?> 

google code 上找到的另外一个类似脚本

<?php 

    functionphpescape($str) 

    { 

        $sublen=strlen($str); 

        $retrunString=""; 

        for($i=0;$i<$sublen;$i++) 

        { 

            if(ord($str[$i])>=127) 

            { 

                $tmpString=bin2hex(iconv("gbk","ucs-2",substr($str,$i,2))); 

                $tmpString=substr($tmpString,2,2).substr($tmpString,0,2); 

                $retrunString.="%u".$tmpString; 

                $i++; 

            }else{ 

                $retrunString.="%".dechex(ord($str[$i])); 

            } 

        } 

        return$retrunString; 

    } 

    functionescape($str) 

    { 

        preg_match_all("/[/x80-/xff].|[/x01-/x7f]+/",$str,$r); 

        $ar=$r[0]; 

        foreach($aras$k=>$v) 

        { 

            if(ord($v[0])<128) 

                $ar[$k]=rawurlencode($v); 

            else 

                $ar[$k]="%u".bin2hex(iconv("UTF-8","UCS-2",$v)); 

        } 

        returnjoin("",$ar); 

    } 

    functionphpunescape($source) 

    { 

        $decodedStr=""; 

        $pos=0; 

        $len=strlen($source); 

        while($pos<$len) 

        { 

            $charAt=substr($source,$pos,1); 

            if($charAt=='%') 

            { 

                $pos++; 

                $charAt=substr($source,$pos,1); 

                if($charAt=='u') 

                { 

                    // we got a unicode character  

                    $pos++; 

                    $unicodeHexVal=substr($source,$pos,4); 

                    $unicode=hexdec($unicodeHexVal); 

                    $entity="&#".$unicode.';'; 

                    $decodedStr.=utf8_encode($entity); 

                    $pos+=4; 

                }else{ 

                    // we have an escaped ascii character  

                    $hexVal=substr($source,$pos,2); 

                    $decodedStr.=chr(hexdec($hexVal)); 

                    $pos+=2; 

                } 

            }else{ 

                $decodedStr.=$charAt; 

                $pos++; 

            } 

        } 

        return$decodedStr; 

    } 

    functionunescape($str) 

    { 

        $str=rawurldecode($str); 

        preg_match_all("/(?:%u.{4})|&#x.{4};|&#/d+;|.+/U",$str,$r); 

        $ar=$r[0]; 

        #print_r($ar); 

        foreach($aras$k=>$v) 

        { 

            if(substr($v,0,2)=="%u") 

                $ar[$k]=iconv("UCS-2","UTF-8",pack("H4",substr($v,-4))); 

            elseif(substr($v,0,3)=="&#x") 

                $ar[$k]=iconv("UCS-2","UTF-8",pack("H4",substr($v,3,-1))); 

            elseif(substr($v,0,2)=="&#") 

            { 

                //echo substr($v,2,-1).""; 

                $ar[$k]=iconv("UCS-2","UTF-8",pack("n",substr($v,2,-1))); 

            } 

        } 

        returnjoin("",$ar); 

    } 

?>

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