How to insert data into MySQL database table? php insert data statement instance to MySQL

How to insert data into a MySQL database table? Example of PHP statements for inserting data into MySQL.

MySQL insert data

In MySQL, the INSERT INTO SQL statement is used to insert data into a table.

You can insert data into the data table through the mysql> command prompt window, or through a PHP script to insert data.

grammar

The following is the general INSERT INTO SQL syntax for inserting data into a MySQL table :

INSERT INTO table_name ( field1, field2,...fieldN )
                       VALUES
                       ( value1, value2,...valueN );

If the data is character type, you must use single quotes or double quotes, such as: "value".

Insert data via command prompt window

Below, we will use the SQL INSERT INTO statement to insert data into the MySQL table chenweiliang_tbl.

Examples

In the following example we will insert three pieces of data into the chenweiliang_tbl table:

root@host# mysql -u root -p password;
Enter password:*******
mysql> use chenweiliang;
Database changed
mysql> INSERT INTO chenweiliang_tbl 
    -> (chenweiliang_title, chenweiliang_author, submission_date)
    -> VALUES
    -> ("学习 PHP", "菜鸟教程", NOW());
Query OK, 1 rows affected, 1 warnings (0.01 sec)
mysql> INSERT INTO chenweiliang_tbl
    -> (chenweiliang_title, chenweiliang_author, submission_date)
    -> VALUES
    -> ("学习 MySQL", "菜鸟教程", NOW());
Query OK, 1 rows affected, 1 warnings (0.01 sec)
mysql> INSERT INTO chenweiliang_tbl
    -> (chenweiliang_title, chenweiliang_author, submission_date)
    -> VALUES
    -> ("JAVA 教程", "chenweiliang.com", '2016-05-06');
Query OK, 1 rows affected (0.00 sec)
mysql>

Note: The arrow -> is not part of the SQL statement; it simply indicates a new line. If an SQL statement is too long, we can create a new line by pressing Enter. The command terminator for an SQL statement is a semicolon ;.

In the above example, we did not provide the data of chenweiliang_id, because this field has been set as the AUTO_INCREMENT attribute when we created the table.Therefore, the field will be automatically incremented without us needing to set it.In the example NOW() is a MySQL function that returns a date and time.

Next, we can view the data table data with the following statement:

Insert data using PHP script

You can use PHP's mysqli_query() function to execute the SQL INSERT INTO command to insert data.

The function has two parameters and returns TRUE if the execution is successful, otherwise it returns FALSE.

grammar

mysqli_query(connection,query,resultmode);

Examples

The program in the following example receives three fields of data entered by the user and inserts them into the data table:

<?
php
$dbhost = 'localhost:3306'; // mysql服务器主机地址
$dbuser = 'root'; // mysql用户名
$dbpass = '123456'; // mysql用户名密码
$conn = mysqli_connect($dbhost, $dbuser, $dbpass);
if(! $conn )
{
 die('连接失败: ' . mysqli_error($conn));
}
echo '连接成功
';
// 设置编码，防止中文乱码
mysqli_query($conn , "set names utf8");
 
$chenweiliang_title = '学习 Python';
$chenweiliang_author = 'chenweiliang.com';
$submission_date = '2016-03-06';
 
$sql = "INSERT INTO chenweiliang_tbl ".
 "(chenweiliang_title,chenweiliang_author, submission_date) ".
 "VALUES ".
 "('$chenweiliang_title','$chenweiliang_author','$submission_date')";
 
 
 
mysqli_select_db( $conn, 'chenweiliang' );
$retval = mysqli_query( $conn, $sql );
if(! $retval )
{
 die('无法插入数据: ' . mysqli_error($conn));
}
echo "数据插入成功\n";
mysqli_close($conn);
?>

Next, we can view the data table data with the following statement: