replace php HtmlReplace input filtering security function

Copy code The code is as follows:

// $rptype = 0 means to replace only html tags
// $rptype = 1 means to replace html tags while removing consecutive whitespace characters
// $rptype = 2 means to replace html Tags remove all whitespace characters at the same time
// $rptype = -1 means to replace only html dangerous tags
function HtmlReplace($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);
$str = eregi_replace('script','ｗcriｽｐｔ',$str);
$str = eregi_replace("<[/]{0, 1}(link|meta|ifr|fra)[^>]*>",'',$str);
}
return addslashes($str);
}

The above introduces the replace php HtmlReplace input filtering security function, including the content of replace. I hope it will be helpful to friends who are interested in PHP tutorials.