php下过滤html代码的函数 提高程序安全性
author:一佰互联 2019-04-30   click:188
以下为过滤HTML代码的函数:
复制代码 代码如下:
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
复制代码 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;
}