PHP+MYSQL如何插入记录到数据库
“INSERT INTO”语句的作用是:向一个数据库的表中插入一条新的记录。 向一个数据库表中插入数据 “INSERT INTO”的作用是:向一个数据库的表中插入一条新的记录。 语法 INSERT INTO table_name VALUES (value1, value2,…) 你可以在指定的列中插入数据,
“INSERT INTO”语句的作用是:向一个数据库的表中插入一条新的记录。
向一个数据库表中插入数据
“INSERT INTO”的作用是:向一个数据库的表中插入一条新的记录。
语法
INSERT INTO table_name
VALUES (value1, value2,…)
你可以在指定的列中插入数据,具体如下:
INSERT INTO table_name (column1, column2,…)
VALUES (value1, value2,…)
注意:SQL语句是“字母大小写不敏感”的语句(它不区分字母的大小写),即:“INSERT INTO”和“insert into”是一样的。
在PHP内创建数据库,我们需要在mysql_query()函数内使用上述语句。这个函数是用来发送MySQL数据库连接建立的请求和指令的。
案例
在前一章里,我们建立了一张名为“Person”的表,其中包含三个纵列:"Firstname", "Lastname" 和 "Age"。在下面的案例当中,我们还会用到同一张表,并在其中加入两条新的记录:
$con = mysql_connect("localhost","peter","abc123");
if (!$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);
?>
把一张表中的数据插入数据库中
现在,我们将建立一个HTML表单;通过它我们可以向“Person”表中加入新的记录。
下面演示这个HTML表单:
在上述案例中,当一个用户点击HTML表单中的“提交submit”按钮后,表单中的数据会发送到“insert.php”。“insert.php”文件与数据库建立连接,并通过PHP $_POST变量获取表单中的数据;此时,mysql_query()函数执行“INSERT INTO”语句,这样,一条新的记录就被添加到数据库的表单当中了。
下面试“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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