请教怎么将数组扩展

<br /><?php<br />$data = array(<br />    array(<br />        'name' => '张三',<br />        'score' => '100'<br />    ),<br />    array(<br />        'name' => '李四',<br />        'score' => '90'<br />    )<br />);<br /><br />$data[0]['school'] = 'school1';<br />$data[1]['school'] = 'school2';<br />echo '<meta http-equiv="content-type" content="text/html; charset=utf-8">';<br />print_r($data);<br /><br />?><br />

while($row = mysql_fetch_assoc($rs)) {<br />  $row['毕业院校'] = getyx($row['name']);<br />  $data[] = $row;<br />}