Code gone bad

Is there something wrong with this code because when I use it the page just keeps loading and loading and loading...  I have to close out the browser to do anything.

<?php
} elseif ($_GET['review'] == "review") {

$SQLstr = mysql_query("SELECT DISTINCT strCompanyname FROM tblReviews ORDER BY strCompanyName")
or die("SQL statement is not working");

$i = 0;
while ($i < 3) {
      $i = $i+1;
      if ($i == 1) {
            echo("<tr>");
      }
      echo("<td>");
?>
     <a href="/admin/edit_reviews.php?Company=<?= $strCompanyname ?>" >
       <?= $strCompanyname ?>
     </a>
<?php
      echo("</td>");
      if ($i == 3) {
             echo("</tr>");
            $i = 0;
      }
      }
}
?>