javascript unescape() escape() 字符编码解码函数
Jun 13, 2016 am 09:54 AMescape() 函数可对字符串进行编码,这样就可以在所有的计算机上读取该字符串。
语法
escape(string)参数 描述
string 必需。要被转义或编码的字符串。
返回值
已编码的 string 的副本。其中某些字符被替换成了十六进制的转义序列
function php教程escape($str)
{
$sublen=strlen($str);
$retrunstring="";
for ($i=0;$i {
if(ord($str[$i])>=127)
{
$tmps教程tring=bin2hex(iconv("gb2312","ucs-2",substr($str,$i,2)));
//$tmpstring=substr($tmpstring,2,2).substr($tmpstring,0,2);window下可能要打开此项
$retrunstring.="%u".$tmpstring;
$i++;
} else {
$retrunstring.="%".dechex(ord($str[$i]));
}
}
return $retrunstring;
}
unescape() 函数可对通过 escape() 编码的字符串进行解码。
语法
unescape(string)参数 描述
string 必需。要解码或反转义的字符串。
返回值
string 被解码后的一个副本。
说明
该函数的工作原理是这样的:通过找到形式为 %xx 和 %uxxxx 的字符序列(x 表示十六进制的数字),用 unicode 字符 u00xx 和 uxxxx 替换这样的字符序列进行解码。
php处理
function unescape($str) {
$str = rawurldecode($str);
preg_match_all("/%u.{4}|.{4};|d+;|.+/u",$str,$r);
$ar = $r[0];
foreach($ar as $k=>$v) {
if(substr($v,0,2) == "%u")
$ar[$k] = iconv("ucs-2","gbk",pack("h4",substr($v,-4)));
elseif(substr($v,0,3) == "")
$ar[$k] = iconv("ucs-2","gbk",pack("h4",substr($v,3,-1)));
elseif(substr($v,0,2) == "") {
$ar[$k] = iconv("ucs-2","gbk",pack("n",substr($v,2,-1)));
}
}
return join("",$ar);
}

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