Embedded Technology Guide Tech How to Fetch Data From Database in PHP and Display in Form

How to Fetch Data From Database in PHP and Display in Form


How to Fetch Data From Database in PHP and Display in Form

Fetching data from a database and displaying it in a form is a common requirement in web development. In PHP, this can be achieved using a combination of database queries and HTML form elements. Here’s a step-by-step guide on how to accomplish this task.

1. Connect to the Database: Start by establishing a connection to the database using PHP’s built-in functions like mysqli_connect() or PDO.

2. Execute the Query: Write a SQL query to fetch the desired data from the database. Use functions like mysqli_query() or PDO::query() to execute the query.

3. Fetch Data: Use functions like mysqli_fetch_assoc() or PDO::fetch() to retrieve the fetched data from the result set. Store the fetched data in variables for further processing.

4. Create the Form: Design an HTML form with appropriate form elements using the retrieved data as default values. For example, if fetching user details, display the name, email, etc., in the respective form fields.

5. Display the Form: Use PHP echo statements to display the HTML form on the web page.

6. Populate Form Fields: Assign the fetched data to the form elements using the value attribute. For example, if the fetched name is stored in a variable called $name, assign it as value=”$name” for the name field.

7. Submit and Update: Once the user makes changes and submits the form, retrieve the updated values using PHP $_POST or $_GET arrays. Process the updated data and update the database accordingly.


1. Can I fetch data from any database using PHP?
Yes, PHP supports various database systems like MySQL, PostgreSQL, Oracle, etc., using different extensions or libraries.

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2. How can I display multiple records in a form?
Use loops like while or foreach to iterate through the fetched data and dynamically generate form elements for each record.

3. Is it necessary to sanitize the retrieved data before displaying it?
Yes, it’s essential to sanitize the data to prevent any security vulnerabilities. Use functions like mysqli_real_escape_string() or PDO::quote() to escape special characters.

4. Can I fetch data based on certain conditions?
Yes, you can modify the SQL query using conditions like WHERE, ORDER BY, LIMIT, etc., to fetch specific data from the database.

5. How can I handle errors during the fetching process?
Use error handling techniques like try-catch blocks or error reporting functions to handle any errors that may occur during the database query execution.

6. Can I fetch data using AJAX in PHP?
Yes, you can use AJAX to fetch data from the server asynchronously and dynamically update the form without refreshing the entire page.

7. How can I display images or other media fetched from the database?
To display images or other media, use appropriate HTML tags like or

In conclusion, fetching data from a database in PHP and displaying it in a form is a straightforward process. By following the steps mentioned above and considering the FAQs, you can easily accomplish this task and create dynamic and interactive web applications.