Skip to main content

How to Fetch Data from MySQL Database in PHP and Display in Table

This is going to be the second part of the tutorial on how to save and retrieve data from a MySQL database in PHP. In the last post, we learned how to create an HTML form and link in with a database in PHP. In this tutorial, we will learn how to fetch the saved information from the database and display it in a nice HTML table.

MySQL Table

The database backend (MySQL table) is the common part that this tutorial will share with the last one. If you recall, the database phonebook consisted of just one table table1 which contained the following fields or columns: id, fname, lname, phonenumber, email.

PHP Script (show.php)

The following code retrieves the data and shows it in a table, the code with the comments is pretty self-explanatory:


$db = new mysqli(DB_HOSTDB_USERDB_PASSDB);

// Check connection
if ($db->connect_errno) {
"Failed to connect to MySQL: " $mysqli->connect_error;

// Fetch all the data in ascending order - notice this is where
// we use the "id" field which is a primary key
$result $db->query('SELECT * FROM ' DB_TABLE ' ORDER BY id ASC');
// The following "fetch_all" method, as the name suggests, fetches all
// the rows at once. The "MYSQLI_ASSOC" parameter makes the result in a 
// nice associative array
$phonebook $result->fetch_all(MYSQLI_ASSOC);

// Close connections

sanitize($string) {
htmlspecialchars(stripslashes(trim($string)), ENT_QUOTES'UTF-8'false);
<!DOCTYPE html>
            table, th, td {
                border: 1px solid black;
                border-collapse: collapse;
            th, td {
                padding: 10px;
            tr:nth-child(even) {
                background: #e3e3e3;
        <h1>Show Phonebook Entries</h1>
                <th>S. No.</th>
            <?php foreach ($phonebook as $phonebook_row) : ?>
                    <td><?php echo sanitize($phonebook_row['id']) ?></td>
                    <td><?php echo sanitize($phonebook_row['fname'] . ' ' $phonebook_row['lname']) ?></td>
                    <td><?php echo sanitize($phonebook_row['phonenumber']) ?></td>
                    <td><?php echo sanitize($phonebook_row['email']) ?></td>
            <?php endforeach; ?>
        <div><a href="index.php">Add New Entry</a></div>

One thing to mention is that, unless specifically required, it is always best practice to use htmlspecialchars on user-input data before displaying it on a page. If you recall from the first post, we did use it before inserting the data into the database. And even though we know the data coming from MySQL is already "escaped" I still prefer to run it through htmlspecialchars. The fourth argument which is $double_encode when set to false will prevent double encodes so we are safe from breaking the data here.

Here is the output:

The last thing to do to wrap this tutorial is to link this new page from the phonebook entry page by adding the following line towards the end of index.php (from the previous post). You can also redirect to show.php after saving the entry from save.php page if you'd like that.

<div><a href="show.php">Show New Enrties</a></div>

Here is the completed script in action:

Popular posts from this blog

Fix For Toshiba Satellite "RTC Battery is Low" Error (with Pictures)

RTC Battery is Low Error on a Toshiba Satellite laptop "RTC Battery is Low..." An error message flashing while you try to boot your laptop is enough to panic many people. But worry not! "RTC Battery" stands for Real-Time Clock battery which almost all laptops and PCs have on their motherboard to power the clock and sometimes to also keep the CMOS settings from getting erased while the system is switched off.  It is not uncommon for these batteries to last for years before requiring a replacement as the clock consumes very less power. And contrary to what some people tell you - they are not rechargeable or getting charged while your computer or laptop is running. In this article, we'll learn everything about RTC batteries and how to fix the error on your Toshiba Satellite laptop. What is an RTC Battery? RTC or CMOS batteries are small coin-shaped lithium batteries with a 3-volts output. Most laptops use

The Best Way(s) to Comment out PHP/HTML Code

PHP supports various styles of comments. Please check the following example: <?php // Single line comment code (); # Single line Comment code2 (); /* Multi Line comment code(); The code inside doesn't run */ // /* This doesn NOT start a multi-line comment block /* Multi line comment block The following line still ends the multi-line comment block //*/ The " # " comment style, though, is rarely used. Do note, in the example, that anything (even a multi-block comment /* ) after a " // " or " # " is a comment, and /* */ around any single-line comment overrides it. This information will come in handy when we learn about some neat tricks next. Comment out PHP Code Blocks Check the following code <?php //* Toggle line if ( 1 ) {      // } else {      // } //*/ //* Toggle line if ( 2 ) {      // } else {      // } //*/ Now see how easy it is to toggle a part of PHP code by just removing or adding a single " / " from th

How to Create an HTML Form Linked with MySQL Database in PHP

If you're looking for example code and detailed discussion on how to create an HTML form that stores data in a MySQL database using PHP then this post might be what you're looking for. I assume that you're familiar with basic HTML, CSS, PHP coding, and  MySQL. I am going to divide this small project into two parts: The HTML form itself that takes input from the user and the PHP script that saves it into the database A table that displays the user-added data that has been saved in the database. We'll be dealing with the first part in this tutorial. Again I'd like to break this problem into a few parts so that it's easier for you to understand and probably gives you an insight into how breaking up a problem into smaller chunks can help make things clearer in your mind. Let's think about it, there is an HTML form (that is HTML code), then there is the PHP code that deals with the user-input data, and the MySQL database itself. For this tutorial, we'll b