$db = mysql教程_connect("localhost", "phpdb", "phpdb");
mysql_select_db("test",$db);
// 如果提交了submit按钮
if ($submit) {
// 如果没有id，则是在增加记录，否则是在修改记录
if ($id) {
$sql = "update employees set first='$first',last='$last', address='$address',position='$position' where id=$id";
}
else {
$sql = "insert into employees (first,last,address,position) values ('$first','$last','$address','$position')";
}
// 向数据库教程发出sql命令
$result = mysql_query($sql);
echo "记录修改成功！<>";
echo "<a href='$php_self'>返回</a>";
}
elseif ($delete) {
// 删除一条记录
$sql = "delete from employees where id=$id";
$result = mysql_query($sql);
echo "记录删除成功！<>";
echo "<a href='$php_self'>返回</a>";
}
else {
// 如果还没有按submit按钮，那么执行下面这部分程序
if (!$id) {
// 如果不是修改状态，则显示员工列表
$result = mysql_query("select * from employees",$db);
while ($myrow = mysql_fetch_array($result)) {
printf("<a href="%s?id=%s">%s %s</a> ",
$php_self, $myrow["id"], $myrow["first"], $myrow["last"]);
printf("<a href="%s?id=%s&delete=yes">(delete)</a><br>", $php_self, $myrow["id"]);
}
}
?>
<a href="<?php echo $php_self?>">返回</a>
<form method="post" action="<?php echo $php_self?>">
<?php
if ($id) {
// 是在编辑修改状态，因些选择一条记录
$sql = "select * from employees where id=$id";
$result = mysql_query($sql);
$myrow = mysql_fetch_array($result);
$id = $myrow["id"];
$first = $myrow["first"];
$last = $myrow["last"];
$address = $myrow["address"];
$position = $myrow["position"];
// 显示id，供用户编辑修改
?>
<input type=hidden name="id" value="<?php echo $id ?>">
<?php
}
?>
名：<input type="text" name="first" value="<?php echo $first ?>">
姓：<input type="text" name="last" value="<?php echo $last ?>">
<br>
住址：<input type="text" name="address" value="<?php echo $address ?>">
职位：<input type="text" name="position" value="<?php echo $position ?>">
<br>
<input type="submit" name="submit" value="输入信息">
</form>
<?php
}
?>
</body>
</html>