PHP if - Why this doesn't work?

$datasx = array();
while ($datasx[] = mysql_fetch_array($coco)) ;

if ($i % 10 == 0) {
    echo '<table><tbody><tr><td>' . $t . '' . $datasx[$t]['side'] . '</td><td>x' . $datasx[$t + 1]['side'] . '</td></tr></tbody></table> 
         <table cellspacing="0" cellpadding="0">  <thead><tr class="firsttr">
         <th></th>
    <th>Player</th>
    <th>Takım</th>
    ...
    <th>Ward Placed %</th>
    <th>Ward Cleared %</th>
    </tr>
    </thead>
     <tbody>';
    $t += 2;
}

only works when if work first time.

Blue and red are values of $datasx[$t]['side']

$datasx[$2]['side'],$datasx[$3]['side'] are not null.

If working all time but first line works for only first time.

Sorry for title my english is not good i couldn't find a good title about this question :/