Question

I’m going to store some words inside db my_table (id,word) as follow

Now i’ve input post

$comment = $_POST[comment]; // "blab blah shit blah" have banned word (shit)

i want to do the following
if the comment contains any of the stored words inside my_table then it gives echo "banned"; exit; and if not then go on echo "passed";

how then to compare it ?

is this could be right

SELECT 1
FROM my_table
WHERE $comment LIKE CONCAT('%', my_table.word , '%')
LIMIT 1

then if gives results then echo "banned"; and if not then echo "passed"; !

Answer 1

I just quickly wrote this. Not really tested but it can give you an idea on how to go about yours in a more optimized way.

//database connection done here
$sql = "SELECT * FROM my_table";
$result = mysql_query($sql);

$comment = $_POST[comment]; 
$commentArray = explode(" ", $comment);
$counter = count($commentArray);
$check = 0;
while($row = mysql_fetch_assoc($result))
    {
        for($i==0; $i&lt$counter;$i++)
        {
            if(strcasecmp($commentArray[$i],$row['word'])==0) {
                $check = 1;
            }
        }   
    }
if($check == 1)
 {
    echo "banned"; exit;
} else echo "passed";