Updating Data in the Database
Understand how to update data in a PHP database by preparing SQL queries, binding parameters, executing the update, and verifying changes. This lesson guides you through secure and efficient data manipulation using PDO to maintain and manage dynamic databases.
We'll cover the following...
We'll cover the following...
In this lesson, we’ll learn about the different phases of updating data in the database. We’ll look at how to prepare queries, bind parameters, define bound values, and execute a query.
Step 1: Write and prepare a query
Write a regular update statement and instead of values, assign the named placeholders. For example:
$sql = "UPDATE `users`
SET `city`= :city, `phone` = :tel
WHERE `id` = :id";
Prepare the query:
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