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$num = mysql_affected_rows ();
if ($num > 0) {如果行就显示
}else{
echo "还没有增加专业";
}
<form action="department_add.php" method="post">
<input type="text" name="department" />
<input type="submit" name="sub" value="增加"/>
</form>
<?php $num =mysql_affected_rows ();
if ($num > 0) {?>
<form action="deletes.php" method="get">
<table>已增加专业:<?php
include_once 'conn.php';
$sql = "select * from db_department order by id";
$query = mysql_query($sql) or die("执行sql语句失败".mysql_error());
$i=0;
while($row = mysql_fetch_array($query))
{
?>
<tr>
<td><?php $i++;echo $i.".".$row['department']?></td>
<td><a href="deletes.php?id=<?php echo $row['id']?>">删除</a></td>
<td>
</td>
</tr>
<?php
}
?></table>
</form>
<?php
}else{
echo "还没有增加专业";
}
?>