php escape URL 编码

php escape URL 编码

标签: escape unescape rawurlencode bin2hex php提供的URL编码函数是基于字节的，对由ie的javascript函数escape编码的数据就无能为力了。
徐祖宁的php版的escape/unescape函数

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);
}

转自: http://www.5do8.com/code/lamp/PHP/198.html