PHP实现类似JAVASCRIPT中的escape()和unescape()编码.

<?php
//****************************************************
//以下方法为对URL地址进行类似javascript escape()编码
//****************************************************
function escape($str)
{
$res = @unpack("H*",iconv("gb2312","UCS-2",$str));
$res = preg_replace("/(.{4})/is","%u//1",$res[1]);
return $res;
}

//****************************************************
//以下方法为对URL地址进行类似javascript unescape()解码
//****************************************************
function unescape($str)
{
$str = rawurldecode($str);
preg_match_all("/%u.{4}|&#x.{4};|&#/d+;|.+/U",$str,$r);
$ar = $r[0];
foreach($ar as $k=>$v) {
if(substr($v,0,2) == "%u")
$ar[$k] = iconv("UCS-2","gb2312",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) == "&#") {
$ar[$k] = iconv("UCS-2","utf-8",pack("n",substr($v,2,-1)));
}
}
return join("",$ar);
}
?>