ermm, this is really annoying Im trying to update a table called settings in my database, and I need to use placeholders on this, I tried this buti t ain no placeholer and I get an error. 
    $key = param('key');
    $des = param('des');
   $dbh->do("UPDATE settings SET key='$key', des='$des'") or die $dbh-
+>errstr;

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Error: 

You have an error in your SQL syntax near 'key='sss', des='sss' WHERE 
+1' at line 1 at admin.cgi line 177.

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In reply to MYSQL $dbh->do by andrew

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