PHP实现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..

1. <?php 
2. classcoding 
3. { 
4.   //模仿JAVASCRIPT的ESCAPE和UNESCAPE函数的功能  
5.   functionunescape($str) 
6.   { 
7.     $text=preg_replace_callback("/%u[0-9A-Za-z]{4}/",array( 
8.       &$this, 
9.       'toUtf8' 
10.     ),$str); 
11.     returnmb_convert_encoding($text,"gb2312","utf-8"); 
12.   } 
13.     
14.   functiontoUtf8($ar) 
15.   { 
16.     foreach($aras$val){ 
17.       $val=intval(substr($val,2),16); 
18.       if($val<0x7F){// 0000-007F  
19.         $c.=chr($val); 
20.       }elseif($val<0x800){// 0080-0800  
21.         $c.=chr(0xC0|($val/64)); 
22.         $c.=chr(0x80|($val%64)); 
23.       }else{// 0800-FFFF  
24.         $c.=chr(0xE0|(($val/64)/64)); 
25.         $c.=chr(0x80|(($val/64)%64)); 
26.         $c.=chr(0x80|($val%64)); 
27.       } 
28.     } 
29.     return$c; 
30.   } 
31.     
32.   functionescape($string,$encoding='gb2312') 
33.   { 
34.     $return=''; 
35.     for($x=0;$x<mb_strlen($string,$encoding);$x++){ 
36.       $str=mb_substr($string,$x,1,$encoding); 
37.       if(strlen($str)>1){// 多字节字符  
38.         $return.='%u'.strtoupper(bin2hex(mb_convert_encoding($str,'UCS-2',$encoding))); 
39.       }else{ 
40.         $return.='%'.strtoupper(bin2hex($str)); 
41.       } 
42.     } 
43.     return$return; 
44.   } 
45.     
46.   functiongb2utf8($string,$encoding='utf-8',$from_encode='gb2312') 
47.   { 
48.     returnmb_convert_encoding($string,$encoding,$from_encode); 
49.   } 
50.     
51. } 
52. ?> 

google code 上找到的另外一个类似脚本

1. <?php 
2.    
3.     functionphpescape($str) 
4.     { 
5.         $sublen=strlen($str); 
6.         $retrunString=""; 
7.         for($i=0;$i<$sublen;$i++) 
8.         { 
9.             if(ord($str[$i])>=127) 
10.             { 
11.                 $tmpString=bin2hex(iconv("gbk","ucs-2",substr($str,$i,2))); 
12.                 $tmpString=substr($tmpString,2,2).substr($tmpString,0,2); 
13.                 $retrunString.="%u".$tmpString; 
14.                 $i++; 
15.             }else{ 
16.                 $retrunString.="%".dechex(ord($str[$i])); 
17.             } 
18.         } 
19.         return$retrunString; 
20.     } 
21.    
22.    
23.     functionescape($str) 
24.     { 
25.         preg_match_all("/[/x80-/xff].|[/x01-/x7f]+/",$str,$r); 
26.         $ar=$r[0]; 
27.         foreach($aras$k=>$v) 
28.         { 
29.             if(ord($v[0])<128) 
30.                 $ar[$k]=rawurlencode($v); 
31.             else 
32.                 $ar[$k]="%u".bin2hex(iconv("UTF-8","UCS-2",$v)); 
33.         } 
34.         returnjoin("",$ar); 
35.     } 
36.    
37.     functionphpunescape($source) 
38.     { 
39.         $decodedStr=""; 
40.         $pos=0; 
41.         $len=strlen($source); 
42.           
43.         while($pos<$len) 
44.         { 
45.             $charAt=substr($source,$pos,1); 
46.             if($charAt=='%') 
47.             { 
48.                 $pos++; 
49.                 $charAt=substr($source,$pos,1); 
50.                 if($charAt=='u') 
51.                 { 
52.                     // we got a unicode character  
53.                     $pos++; 
54.                     $unicodeHexVal=substr($source,$pos,4); 
55.                     $unicode=hexdec($unicodeHexVal); 
56.                     $entity="&#".$unicode.';'; 
57.                     $decodedStr.=utf8_encode($entity); 
58.                     $pos+=4; 
59.                 }else{ 
60.                     // we have an escaped ascii character  
61.                     $hexVal=substr($source,$pos,2); 
62.                     $decodedStr.=chr(hexdec($hexVal)); 
63.                     $pos+=2; 
64.                 } 
65.             }else{ 
66.                 $decodedStr.=$charAt; 
67.                 $pos++; 
68.             } 
69.         } 
70.         return$decodedStr; 
71.     } 
72.       
73.       
74.     functionunescape($str) 
75.     { 
76.         $str=rawurldecode($str); 
77.         preg_match_all("/(?:%u.{4})|&#x.{4};|&#/d+;|.+/U",$str,$r); 
78.         $ar=$r[0]; 
79.         #print_r($ar); 
80.         foreach($aras$k=>$v) 
81.         { 
82.             if(substr($v,0,2)=="%u") 
83.                 $ar[$k]=iconv("UCS-2","UTF-8",pack("H4",substr($v,-4))); 
84.             elseif(substr($v,0,3)=="&#x") 
85.                 $ar[$k]=iconv("UCS-2","UTF-8",pack("H4",substr($v,3,-1))); 
86.             elseif(substr($v,0,2)=="&#") 
87.             { 
88.                 //echo substr($v,2,-1).""; 
89.                 $ar[$k]=iconv("UCS-2","UTF-8",pack("n",substr($v,2,-1))); 
90.             } 
91.         } 
92.         returnjoin("",$ar); 
93.     } 
94.    
95. ?>