PHP+MySQL教程(4):MySQL Insert Into_MySQL
INSERT INTO 语句用于向数据库表中插入新纪录。
向数据库表插入数据
INSERT INTO 语句用于向数据库表添加新纪录。
语法
INSERT INTO table_name
VALUES (value1, value2,....)
您还可以规定希望在其中插入数据的列:
INSERT INTO table_name (column1, column2,...)
VALUES (value1, value2,....)
注释:SQL 语句对大小写不敏感。INSERT INTO 与 insert into 相同。
为了让 PHP 执行该语句,我们必须使用 mysql_query() 函数。该函数用于向 MySQL 连接发送查询或命令。
例子
在前面的章节,我们创建了一个名为 "Person" 的表,有三个列:"Firstname", "Lastname" 以及 "Age"。我们将在本例中使用同样的表。下面的例子向 "Person" 表添加了两个新纪录:
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("my_db", $con);
mysql_query("INSERT INTO person (FirstName, LastName, Age)
VALUES ('Peter', 'Griffin', '35')");
mysql_query("INSERT INTO person (FirstName, LastName, Age)
VALUES ('Glenn', 'Quagmire', '33')");
mysql_close($con);
?>
把来自表单的数据插入数据库
现在,我们创建一个 HTML 表单,这个表单可把新纪录插入 "Person" 表。
这是这个 HTML 表单:
当用户点击上例中 HTML 表单中的提交按钮时,表单数据被发送到 "insert.php"。"insert.php" 文件连接数据库,并通过 $_POST 变量从表单取回值。然后,mysql_query() 函数执行 INSERT INTO 语句,一条新的记录会添加到数据库表中。
下面是 "insert.php" 页面的代码:
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("my_db", $con);
$sql="INSERT INTO person (FirstName, LastName, Age)
VALUES
('$_POST[firstname]','$_POST[lastname]','$_POST[age]')";
if (!mysql_query($sql,$con))
{
die('Error: ' . mysql_error());
}
echo "1 record added";
mysql_close($con)
?>

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