PHP PDO MYSQL SELECT query data

PHP PDO mysql connection and query data

user_table.sql

  CREATE TABLE IF NOT EXISTS `demo_user` (
  `user_id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(100) NOT NULL,
  `email` varchar(100) NOT NULL,
  PRIMARY KEY (`user_id`)
) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=utf8;

INSERT INTO `demo_user` (`user_id`, `name`, `email`) VALUES
(1, 'Lucy', 'lucy@fakemail.com'),
(2, 'Brooke', 'brooke@fakemail.com'),
(3, 'Anna', 'anna@fakemail.com'),
(4, 'Mariya', 'mariya@fakemail.com'),
(5, 'Jack', 'jack@fakemail.com'),
(6, 'Jack', 'jack123@fakemail.com'),
(7, 'Anna', 'anna123@fakemail.com');

db_connection.php

<?php

	define('DBHOST','localhost');
	define('DBUSER','root'); //DB username
	define('DBPASS',''); //DB password
	define('DBNAME','demo_table'); //DB table name

	try {
		$db_conn = new PDO("mysql:host=".DBHOST.";charset=utf8mb4;dbname=".DBNAME, DBUSER, DBPASS);
		$db_conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

		//connection success

	} catch(PDOException $e) {

		//connection error
		die("Error connection ".$e->getMessage());
	} 
?>

index.php

 <!DOCTYPE html>
 <html>
 <head>
 	<title>User Table</title>
 	<style>
	  #myTable{
	     font-family: 'helvetica neue',helvetica,arial,'lucida grande',sans-serif;
	     border-collapse: collapse;
	  }
	  #myTable td{
	     border: solid 1px #C9C9C9;
	     padding: 10px;
	     font-size: 12px;
	     text-align: center;
	  }
	  #myTable tr{
	     color: #000000;
	  }
	  #myTable th{
	     border: solid 1px #BFBFBF;
	     padding: 10px;
	     color: #000000;
	     background-color: #f5f5f5;
	     text-align: center;
	     font-size: 12px;
	  }
	</style>
 </head>
 <body>

 	<form action="<?php echo $_SERVER['PHP_SELF'] ?>" method="post">
 		<div>Search user name</div><br>
 		<div>Name <input type="text" name="user_name" required=""></div><br>
 		<div><input type="submit" name="submit" value="submit"></div><br>
 	</form>

 	<?php 
	if (isset($_POST['submit']) && isset($_POST['user_name'])) {

		require 'db_connection.php';

		$name = $_POST['user_name'];

		$stmt = $db_conn->prepare('SELECT `user_id`, `name`, `email` FROM `demo_user` WHERE `name` = :name');
		$stmt->bindValue(':name', $name, PDO::PARAM_STR);
		$stmt->execute();
		$row = $stmt->fetchAll(PDO::FETCH_ASSOC);

		//check if row exist
		if ($row) {
			echo '<table id="myTable" width="100%">
				  <thead>
				   <tr>
				    <th>User ID</th>
				    <th>Name</th>
				    <th>Email</th>
				   </tr>
				  </thead>';
			foreach ($row as $value) {
				echo  '<tbody>
				  <tr>
				   <td>'.$value['user_id'].'</td>
				   <td>'.$value['name'].'</td>
				   <td>'.$value['email'].'</td>
				  </tr>';
			}

			echo ' </tbody>
				</table>';
		} else {
			echo "No Data Found";
		}
		
	}	
	//close connection
	$db_conn = null;
 ?>

 <script>
 	//prevent resubmission post
 	if ( window.history.replaceState ) {
 		window.history.replaceState( null, null, window.location.href );
 	}
 </script>

 </body>
 </html>