php htmlspecialchars加强版

//取消HTML代码 
function shtmlspecialchars($string) { 
if(is_array($string)) { 
foreach($string as $key => $val) { 
$string[$key] = shtmlspecialchars($val); 
} 
} else { 
$string = preg_replace(‘/&((#(\d{3,5}|x[a-fA-F0-9]{4})|[a-zA-Z][a-z0-9]{2,5});)/', ‘&\\1′, 
str_replace(array(‘&', ‘”‘, ‘<', ‘>'), array(‘&', ‘"', ‘<', ‘>'), $string)); 
} 
return $string; 
}