使用 PHP 解析 javascript escape() 编码过的字串

    技术2022-05-11  8

    PHP 跟 Javascript 都有 HTML encoding 的函式,编码过的结果虽然类似,但是还是有些微的不同,所以不能互转。 二者的差异可以可参考:http://php.weblogs.com/php_jscript_vbscript_1节录如下:PHP:urlencode( ) All punctuation, accented characters, and any other non-ASCII characters are replaced with %xx encoding. Spaces converted to +.urldecode( )All punctuation, accented characters, and any other non-ASCII characters are replaced with %xx encoding. Spaces converted to +.Javascript:Javascript(str) All spaces, punctuation, accented characters, and any other non-ASCII characters are replaced with %xx encoding那要如何用 PHP 来读取 escape() 编码过的字符串呢?可以用以下的方式来读取 (范例为 Unicode 解译为 big5)修改自:http://vivian.stripper.jp/index.php?itemid=100$str = uniDecode($str,'big-5'); function uniDecode($str,$charcode){

     $text = preg_replace_callback("/%u[0-9A-Za-z]{4}/",toUtf8,$str);

     return mb_convert_encoding($text, $charcode, 'utf-8');

    }

    function toUtf8($ar){

     foreach($ar as $val){

        $val = intval(substr($val,2),16);

        if($val < 0x7F){        // 0000-007F

            $c .= chr($val);

        }elseif($val < 0x800) { // 0080-0800

            $c .= chr(0xC0 | ($val / 64));

            $c .= chr(0x80 | ($val % 64));

        }else{                // 0800-FFFF

            $c .= chr(0xE0 | (($val / 64) / 64));

            $c .= chr(0x80 | (($val / 64) % 64));

            $c .= chr(0x80 | ($val % 64));

        }

     }

     return $c;

    }

     


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