Insert Data Into a Database Table
The INSERT INTO statement is used to add new records to a database table.
Syntax
INSERT INTO table_name
VALUES (value1, value2,....)
You can also specify the columns where you want to insert the data:
INSERT INTO table_name (column1, column2,...)
VALUES (value1, value2,....)
Note: SQL statements are not case sensitive. INSERT INTO is the same as insert into.
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 "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:
<?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);
?>
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 "Person" 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 database table.
Below is the code in 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 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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