php下过滤html代码的函数提高程序安全性_PHP教程

function ihtmlspecialchars($string) { 
if(is_array($string)) { 
foreach($string as $key => $val) { 
$string[$key] = ihtmlspecialchars($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; 
} 
 

php下过滤HTML代码的函数 
 代码如下:

function htmlEncode($string) { 
$string=trim($string); 
$string=str_replace("&","&",$string); 
$string=str_replace("'","'",$string); 
$string=str_replace("&","&",$string); 
$string=str_replace(""",""",$string); 
$string=str_replace("\"",""",$string); 
$string=str_replace("<","<",$string); 
$string=str_replace("<","<",$string); 
$string=str_replace(">",">",$string); 
$string=str_replace(">",">",$string); 
$string=str_replace(" "," ",$string); 
$string=nl2br($string); 
return $string; 
} 


http://www.bkjia.com/PHPjc/321398.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/321398.htmlTechArticle以下为过滤HTML代码的函数：  代码如下:
function ihtmlspecialchars($string) { if(is_array($string)) { foreach($string as $key = $val) { $string[$key] = ihtm...