#! /usr/local/bin/php

<?php while (($line = fgets(STDIN)) !== false) {     $str = urldecode(trim($line));     //$line = '\xba\xbd\xcc\xec\xb3\xc7';     //$line = '\xb9\xc9\xca\xd0';     //$line = '%E4%B8%9C%E6%96%B9%E9%98%B3%E5%85%89%E4%B8%8E%E6%AC%A7%E9%A3%8E%E7%BE%8E%E9%9B%A8%EF%BC%81';     $str = str_replace(array("\t","\n","\r"),'',stripcslashes($str));     echo mb_convert_encoding($str, 'GB2312', mb_detect_encoding($str , array('UTF-8','GB2312', 'GBK','LATIN1','BIG5'))); }

/**

function is_utf8($word) {     if (preg_match("/^([".chr(228)."-".chr(233)."]{1}[".chr(128)."-".chr(191)."]{1}[".chr(128)."-".chr(191)."]{1}){1}/",$word) == true || preg_match("/([".chr(228)."-".chr(233)."]{1}[".chr(128)."-".chr(191)."]{1}[".chr(128)."-".chr(191)."]{1}){1}$/",$word) == true || preg_match("/([".chr(228)."-".chr(233)."]{1}[".chr(128)."-".chr(191)."]{1}[".chr(128)."-".chr(191)."]{1}){2,}/",$word) == true)     {         return true;     }     else     {         return false;     } }

function is_gb2312($str)

{         for($i=0; $i<strlen($str); $i++) {                 $v = ord( $str[$i] );                 if( $v > 127) {                         if( ($v >= 228) && ($v <= 233) )                         {                                 if( ($i+2) >= (strlen($str) - 1)) return true;  // not enough characters                                 $v1 = ord( $str[$i+1] );                                 $v2 = ord( $str[$i+2] );                                 if( ($v1 >= 128) && ($v1 <=191) && ($v2 >=128) && ($v2 <= 191) ) // utf编码                                         return false;                                 else                                         return true;                         }                 }         }         return true; }

*/ ?>