The INSERT INTO statement is used to insert new records in a table.
Insert Data Into a Database Table
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 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,...)
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,...)
VALUES (value1, value2, value3,...)
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);
?>
$con = mysql_connect("localhost","peter","abc123");
if (!$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>
<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:
<form action="insert.php" method="post">
<input type="submit" />
</body>
=============================================
save this file insert.php
<?php
// Create table
$db=mysql_select_db("try", $con);
$sql="INSERT INTO msheet (name, p, c,m)
if (!mysql_query($sql,$con))
mysql_close($con);
To display Data
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);
?>
Another Example
<html>
<body>
<form action="insert.php" method="post">
name: <input type="text" name="name" />
P: <input type="text" name="p" />
C: <input type="text" name="c" />
M: <input type="text" name="m" />
<input type="submit" />
</form>
</body>
</html>
=============================================
To insert data to mysql db
save this file insert.php
<?php
$con = mysql_connect("localhost","root","");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
// Create table
$db=mysql_select_db("try", $con);
$sql="INSERT INTO msheet (name, p, c,m)
VALUES
('$_POST[name]','$_POST[p]','$_POST[c]','$_POST[m]')";
if (!mysql_query($sql,$con))
{
die('Error1: ' . mysql_error());
}
echo "1 record added";
mysql_close($con);
?>
==========================================
To display Data
save it display.php
<?php
$con = mysql_connect("localhost","root","");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
// Create table
mysql_select_db("try", $con);
$sql = "CREATE TABLE msheet
(
name varchar(15),
p int,
c int,
m int
)";
// Execute query
mysql_query($sql,$con);
/*$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";*/
$result = mysql_query("SELECT * FROM msheet");
echo "<table border='1'>
<tr>
<th>name</th>
<th>P</th>
<th>C</th>
<th>M</th>
</tr>";
while($row = mysql_fetch_array($result))
{
echo "<tr>";
echo "<td>" . $row['name'] . "</td>";
echo "<td>" . $row['p'] . "</td>";
echo "<td>" . $row['c'] . "</td>";
echo "<td>" . $row['m'] . "</td>";
echo "</tr>";
}
echo "</table>";
mysql_close($con);
?>
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