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escape unescape的php下的实现方法_php技巧

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2016-05-17 09:39:41895browse

function escape($str) { 
 preg_match_all("/[\x80-\xff].|[\x01-\x7f]+/",$str,$r); 
 $ar = $r[0]; 
 foreach($ar as $k=>$v) { 
   if(ord($v[0])      $ar[$k] = rawurlencode($v); 
   else 
     $ar[$k] = "%u".bin2hex(iconv("GB2312","UCS-2",$v)); 
 } 
 return join("",$ar); 


function unescape($str) { 
 $str = rawurldecode($str); 
 preg_match_all("/(?:%u.{4})|.+/",$str,$r); 
 $ar = $r[0]; 
 foreach($ar as $k=>$v) { 
   if(substr($v,0,2) == "%u" && strlen($v) == 6) 
     $ar[$k] = iconv("UCS-2","GB2312",pack("H4",substr($v,-4))); 
 } 
 return join("",$ar); 

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