GBK's page outputs PHP functions in JSON format

function tb_json_encode($value, $options = 0) 
{ 
return json_encode(tb_json_convert_encoding($value,  " GBK " ,  " UTF-8 " )); 
} 

function tb_json_decode($str, $assoc = false, $depth = 512) 
{ 
return tb_json_convert_encoding(json_decode($str, $assoc),  " UTF-8 " ,  " GBK " ); 
} 

function tb_json_convert_encoding($m, $from, $to) 
{ 
switch(gettype($m)) { 
case  ' integer': 
case  ' boolean': 
case  ' float': 
case  ' double': 
case  ' NULL': 
return $m; 

case 'string': 
return mb_convert_encoding($m, $to, $from); 
case  ' object': 
$vars = array_keys(get_object_vars($m)); 
foreach($vars as $key) { 
$m->$key = tb_json_convert_encoding($m->$key, $from ,$to); 
} 
return $m; 
case  ' array': 
foreach($m as $k => $v) { 
$m[tb_json_convert_encoding($k, $from, $to)] = tb_json_convert_encoding($v, $from, $to); 
} 
return $m; 
default: 
} 
return $m; 
}