The INSERT INTO statement is used to add new records to a database table. Syntax It is possible to write the INSERT INTO statement in two...
The INSERT INTO statement is used to add new records to a database table.
The first form doesn't specify the column names where the data will be inserted, only their values:
The second form specifies both the column names and the values to be inserted:
To learn more about SQL, please visit our SQL tutorial.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.
Here is the HTML form:
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 "Persons" table.
Here is the "insert.php" page:
Syntax
It is possible to write the INSERT INTO statement in two forms.The first form doesn't specify the column names where the data will be inserted, only their values:
INSERT INTO table_name VALUES (value1, value2, value3,...) |
The second form specifies both the column names and the values to be inserted:
INSERT INTO table_name (column1, column2, column3,...) VALUES (value1, value2, value3,...) |
To learn more about SQL, please visit our SQL tutorial.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.
Example
In the previous chapter we created a table named "Persons", 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 "Persons" table:<?php
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("my_db", $con);
mysql_query("INSERT INTO Persons (FirstName, LastName, Age)
VALUES ('Peter', 'Griffin', '35')");
mysql_query("INSERT INTO Persons (FirstName, LastName, Age)
VALUES ('Glenn', 'Quagmire', '33')");
mysql_close($con); ?> |
Insert Data From a Form Into a Database
Now we will create an HTML form that can be used to add new records to the "Persons" table.Here is the HTML form:
<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 "Persons" table.
Here is the "insert.php" page:
<?php
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("my_db", $con);
$sql="INSERT INTO Persons (FirstName, LastName, Age)
VALUES
('$_POST[firstname]','$_POST[lastname]','$_POST[age]')";
if (!mysql_query($sql,$con))
{
die('Error: ' . mysql_error());
}
echo "1 record added";
mysql_close($con) ?> |
