PHP 防注入函数(格式化数据)

<? 
//格式化数据（防止注入） 
function site_addslashes($string, $force = 0) { 
!defined('MAGIC_QUOTES_GPC') && define('MAGIC_QUOTES_GPC', get_magic_quotes_gpc()); 
if(!MAGIC_QUOTES_GPC || $force) { 
if(is_array($string)) { 
foreach($string as $key => $val) { 
$string[$key] = daddslashes($val, $force); 
} 
} else { 
$string = addslashes($string); 
} 
} 
return $string; 
} 
?>