Update Query with PDO and MySQL
Updating data in a MySQL database using PHP Data Objects (PDO) can present challenges if not executed correctly. Encountering issues with query execution is common, and understanding the errors is crucial.
One common issue is an incorrect UPDATE syntax. The provided code attempts to update all rows in the access_users table, which is not the intended behavior for an update operation. To target a specific row, a WHERE clause must be used.
The correct syntax for the UPDATE query is:
<code class="sql">UPDATE `access_users` SET `contact_first_name` = :firstname, `contact_surname` = :surname, `contact_email` = :email, `telephone` = :telephone WHERE `user_id` = :user_id</code>
Here, the WHERE clause identifies the row to update based on the user_id field. The parameters (:firstname, :surname, :email, :telephone, :user_id) are then used to provide the updated values.
To ensure successful execution, the following steps are recommended:
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