select from...where?

[chris]

$sql_all = "SELECT nome, indirizzo, tel FROM abbigliamento WHERE 1=1";
if( $zona ) $sql_all .= " AND zona = '" . $zona . "'";
if( $stile ) $sql_all .= " AND stile = '" . $stile . "'";
if( $prezzi ) $sql_all .= " AND prezzi = '" . $prezzi . "'";