Wykorzystanie array_unique

$str = '2009.1|2009.2|2009.6|2009.6|2009.6|2009.7 |2009.8|2009.8|2009.9|2009.9|2009.9|2009.10|2009.10|2009.10|2009.10';
echo $str . '<br><br>';

$tab = explode('|', $str);
$tab2 = array_unique($tab);

echo '<pre>'; print_r($tab2); echo '</pre>';
$cnt = count($tab2);

for($i=0; $i<$cnt; $i++) {
 echo $tab2[$i].' ';
}

echo '<br><br>';</p>

foreach($tab2 as $row) {
 echo $row.' ';
}

Wyniki:
2009.1|2009.2|2009.6|2009.6|2009.6|2009.7 |2009.8|2009.8|2009.9|2009.9|2009.9|2009.10|2009.10|2009.10|2009.10
Array
(
    [0] => 2009.1
    [1] => 2009.2
    [2] => 2009.6
    [5] => 2009.7
    [6] => 2009.8
    [8] => 2009.9
    [11] => 2009.10
)

for:
2009.1 2009.2 2009.6 2009.7 2009.8

foreach:
2009.1 2009.2 2009.6 2009.7 2009.8 2009.9 2009.10