PHP MySQL Update

The UPDATE statement is used to modify data in a database table.

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Update Data In a Database

The UPDATE statement is used to modify data in a database table.

Syntax

UPDATE table_name SET column_name = new_value WHERE column_name = some_value

Note: SQL statements are not case sensitive. UPDATE is the same as update.

To get PHP to execute the statement above we must use the mysql_query() function. This function is used to send a query or command to a MySQL connection.

Example

Earlier in the tutorial we created a table named "Person". Here is how it looks:

FirstName	LastName	Age
Peter	Griffin	35
Glenn	Quagmire	33

The following example updates some data in the "Person" table:

<?php $con = mysql_connect("localhost","peter","abc123"); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("my_db", $con); mysql_query("UPDATE Person SET Age = '36' WHERE FirstName = 'Peter' AND LastName = 'Griffin'"); mysql_close($con); ?>

After the update, the "Person" table will look like this:

FirstName	LastName	Age
Peter	Griffin	36
Glenn	Quagmire	33