<?php

////////// Dati per collegamento al Database //////////

session_start();

$db_host = 'xxx';
$db_nomedb = 'xxx';
$db_utente = 'xxx';
$db_password = 'xxx';

$dbh=mysql_connect ($db_host, $db_utente, $db_password) or die ('Errore nella stringa di connessione al database: '.mysql_error());
mysql_select_db($db_nomedb);

/////// Fine dati per collegamento al Database ////////

//////// Ricerca dei locali e stampa dei link /////////

if(isset($_POST['ricerca'])) {

$categoria_1 = $_POST['categoria_1'];
$categoria_2 = $_POST['categoria_2'];
$categoria_3 = $_POST['categoria_3'];

$sql="SELECT nome_locale, link_locale FROM tbl_locali WHERE (tag LIKE '* $categoria_1 ') OR tag LIKE ' $categoria_2 ') OR tag LIKE ' $categoria_3 *')";
$query = @mysql_query ($sql) or die (mysql_error());

while ($row = mysql_fetch_array($query)) {

echo "
<table border='0' cellspacing='20' cellpadding='0'>
<tr>
<th scope='col'>
<a href='".$row['link_locale']."'>".$row['nome_locale']."</a>
</th>
</tr>
</table>
";

}

} else {

echo "
<form action='' method='post'>
<table border='0' cellspacing='20' cellpadding='0'>
<tr>
<th scope='col'>
<select name='categoria_1'>
<option value='1'>1</option>
<option value='2'>2</option>
<option value='3'>3</option>
<option value='4'>4</option>
<option value='5'>5</option>
</select>
</th>
<th scope='col'>
<select name='categoria_2'>
<option value='1'>1</option>
<option value='2'>2</option>
<option value='3'>3</option>
<option value='4'>4</option>
<option value='5'>5</option>
</select>
</th>
<th scope='col'>
<select name='categoria_3'>
<option value='1'>1</option>
<option value='2'>2</option>
<option value='3'>3</option>
<option value='4'>4</option>
<option value='5'>5</option>
</select>
</th>
<th scope='col'>
<input class='button' name='ricerca' type='submit' value='Ricerca' />
</th>
</tr>
</table>
</form>
";

}

////// Fine Ricerca dei locali e stampa dei link //////

?>

Mi potreste dare una mano?