$msg=$_POST['msg'];
$msg=str_replace('کلمات غیر اخلاقی','***',$msg):
echo $msg;
البته میتونی یه آرایه تعریف کنی و کلمات غیر اخلاقی(!) رو replace کنی
<?
$replace[0] = 'key 0';
$replace[1] = 'key 1';
$replace[2] = 'key 2';
$replace[3] = 'key 3';
$string =" this is key 1 and this is key 2 and this is key 8";
$unfiltered_string = $string;
for($i=0; $i<sizeof($replace); $i++){
if(stristr($string,$replace[$i])){
$string = str_replace($replace[$i],"<font color=red>***</font>",$string);
}
}
echo "<hr>First string :<br>$unfiltered_string<hr>Filtered string:<br>$string";
?>--------------------------------------------------------------------------------
First string :
this is key 1 and this is key 2 and this is key 8
--------------------------------------------------------------------------------
Filtered string:
this is *** and this is *** and this is key 8
