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..
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<?phpclasscoding{ //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,$from_encode); } }?> |
google code 上找到的另外一个类似脚本
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<?php functionphpescape($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); } ?> |
