Matching one or more keywords

[tester]

Hi,

Below is a portion of PHP (which works fine), although I need to alter the SQL query so that a row with 1 or more of the words is returned. I think that it only returns rows with all of the words at the moment. Any suggestions would be appreciated.

$q = stop_sql_inj($_GET[q]);
$q = str_replace(" ","%%%%",$q);
$my_select_001 = mysql_query("SELECT * FROM mytable 
WHERE keywords LIKE '%%$q%%' 
AND allow = '1' ORDER BY RAND() LIMIT 1"); 

Thanks