javascript unescape() escape() character encoding and decoding function_PHP tutorial

The

escape() function encodes a string so that it can be read on all computers.

Grammar
escape(string) parameter description
string required. The string to be escaped or encoded.

Return value
A copy of the encoded string. Some of the characters are replaced with hexadecimal escape sequences

function php tutorial escape($str)
{
            $sublen=strlen($str);
           $retrunstring="";
for ($i=0;$i<$sublen;$i++)
                                                                          If(ord($str[$i])>=127)
                                                                                      $ TMPS tutorial tring = bin2hex (iconv ("GB2312", "UCS-2", substr ($ STR, $ i, 2));
// $tstring=substr. $retrunstring.="%u".$tmpstring;
$i++;
                        } else {
$retrunstring.="%".dechex(ord($str[$i]));
                                                                                                                }            }
            return $retrunstring;
}



The unescape() function decodes a string encoded with escape().

Grammar

unescape(string) parameter description
string required. The string to decode or unescape.

Return value
A decoded copy of string.

Description

The function works by decoding by finding character sequences of the form %xx and %uxxxx (x represents a hexadecimal number) and replacing such character sequences with the unicode characters u00xx and uxxxx.

php processing

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);
}

http://www.bkjia.com/PHPjc/632345.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/632345.htmlTechArticleescape() function encodes a string so that it can be read on all computers . Syntax escape(string) Parameter Description string Required. Words to be escaped or encoded...