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php HtmlReplace输入过滤安全函数

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Release: 2016-06-06 20:34:29
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这个替换函数,是对用户输入的一些安全过滤,防止用户提交了不安全的代码。

代码如下:
// $rptype = 0 表示仅替换 html标记
// $rptype = 1 表示替换 html标记同时去除连续空白字符
// $rptype = 2 表示替换 html标记同时去除所有空白字符
// $rptype = -1 表示仅替换 html危险的标记
function HtmlReplace($str,$rptype=0)
{
$str = stripslashes($str);
if($rptype==0)
{
$str = htmlspecialchars($str);
}
else if($rptype==1)
{
$str = htmlspecialchars($str);
$str = str_replace(" ",' ',$str);
$str = ereg_replace("[rnt ]{1,}",' ',$str);
}
else if($rptype==2)
{
$str = htmlspecialchars($str);
$str = str_replace(" ",'',$str);
$str = ereg_replace("[rnt ]",'',$str);
}
else
{
$str = ereg_replace("[rnt ]{1,}",' ',$str);
$str = eregi_replace('script','script',$str);
$str = eregi_replace("]*>",'',$str);
}
return addslashes($str);
}
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