徐祖宁的php版的escape/unescape函数

复制代码 代码如下:

function escape($str) {

preg_match_all("/[x80-xff].|[x01-x7f]+/",$str,$r);

$ar = $r[0];

foreach($ar as $k=>$v) {

if(ord($v[0]) < 128)

$ar[$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);

}