编码转换方法

public static function get_utf8($array, $type = 'utf-8') {   

      if (! empty ( $array )) {  

               if (is_array ( $array )) {  

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

                                if (is_array($v)) {     

                                     $arr [$k] = self::get_utf8 ( $v, $type );    

                               } else {     

                                     if ($type == 'utf-8') {      

                                           if(CHAR=='utf-8'){       

                                                   $arr [$k] = $v;//系统编码UTF8 需要返回UTF8编码，直接返回      

                                                          }    else{        $arr [$k] = iconv ( 'gb2312', 'utf-8', $v );//系统编码GB2312  需要返回UTF8编码，处理返回       }

     } else {      

                              if(CHAR=='gb2312'){       

                                       $arr [$k] = iconv ( 'utf-8', $type, $v );//系统编码UTF8  需要返回GB2312编码，处理返回      

                                              }       else{        $arr [$k] =$v;//系统编码GB2312 需要返回GB2312编码，直接返回      

                    }     

               }    

           }   

     }  

} else {   

       if ($type == 'utf-8') {   

                 if(CHAR=='utf-8'){     

                         $arr =$array;//系统编码UTF8 需要返回UTF8编码，直接返回    

                             }     else{     

                                $arr = iconv ( 'gb2312', 'utf-8', $array );//系统编码GB2312  需要返回UTF8编码，处理返回    

         }  

   } else {    

                 if(CHAR=='gb2312'){    

                               $arr = iconv ( 'utf-8', $type, $array );//系统编码UTF8  需要返回GB2312编码，处理返回    

                 }     else{     

                             $arr =$array;//系统编码GB2312 需要返回GB2312编码，直接返回    

         }   

     }  

  }

}

  return $arr;

}