请教怎样写正则表达式

Question

<?
$str='
<tr>
<td width="77"><small>平远县</small></td>
<td width="77"><small>514600 </small></td>
<td width="77"><small>汕头市</small></td>
<td width="77"><small>515000 </small></td>
<td width="78"><small>潮阳县</small></td>
<td width="78"><small>515100 </small></td>
<td width="78"><small>惠来县</small></td>
<td width="78"><small>515200 </small></td>
</tr>
<tr>
<td width="77"><small>普宁县</small></td>
<td width="77"><small>515300 </small></td>
<td width="77"><small>揭西县</small></td>
<td width="77"><small>515400 </small></td>
<td width="78"><small>揭阳县</small></td>
<td width="78"><small>515500 </small></td>
<td width="78"><small>潮州市</small></td>
<td width="78"><small>515600 </small></td>
</tr>
';
preg_match_all("/<small>(.*)</small>/",$str,$array);
print_r($array);
?>

Answer 1

不好意思，刚才的有错。
<?
$str='
<tr>
<td width="77"><small>平远县</small></td>
<td width="77"><small>514600 </small></td>
<td width="77"><small>汕头市</small></td>
<td width="77"><small>515000 </small></td>
<td width="78"><small>潮阳县</small></td>
<td width="78"><small>515100 </small></td>
<td width="78"><small>惠来县</small></td>
<td width="78"><small>515200 </small></td>
</tr>
<tr>
<td width="77"><small>普宁县</small></td>
<td width="77"><small>515300 </small></td>
<td width="77"><small>揭西县</small></td>
<td width="77"><small>515400 </small></td>
<td width="78"><small>揭阳县</small></td>
<td width="78"><small>515500 </small></td>
<td width="78"><small>潮州市</small></td>
<td width="78"><small>515600 </small></td>
</tr>
';
preg_match_all("/<small>(.*)<\/small>/",$str,$arra);
print_r($arra);
?>