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The INSERT INTO statement is used to insert new records into a database table.
“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。
The INSERT INTO statement is used to add new records to a database table.
“INSERT INTO”的作用是:向一个数据库的表中插入一条新的记录。
INSERT INTO table_name VALUES (value1, value2,....) |
You can also specify the columns where you want to insert the data:
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,....) |
To get PHP to execute the statements above we must use the mysql_query() function. This function is used to send a query or command to a MySQL connection.
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。
In the previous chapter we created a table named "Person", with three columns; "Firstname", "Lastname" and "Age". We will use the same table in this example. The following example adds two new records to the "Person" table:
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:
<?php $con = mysql_connect("localhost","peter","abc123"); if (!$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); ?> |
Now we will create an HTML form that can be used to add new records to the "Person" table.
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。
Here is the HTML form:
下面演示这个HTML表单:
<html> <body> <form action="insert.php" method="post"> Firstname: <input type="text" name="firstname" /> Lastname: <input type="text" name="lastname" /> Age: <input type="text" name="age" /> <input type="submit" /> </form> </body> </html> |
When a user clicks the submit button in the HTML form in the example above, the form data is sent to "insert.php". The "insert.php" file connects to a database, and retrieves the values from the form with the PHP $_POST variables. Then, the mysql_query() function executes the INSERT INTO statement, and a new record will be added to the database table.
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。
Below is the code in the "insert.php" page:
下面试“insert.php”页面的代码:
<?php $con = mysql_connect("localhost","peter","abc123"); if (!$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) ?> |