<?php
	$db ='sanjeev';  $host ='localhost'; $user='root'; $pass='';
	$pdo = new PDO('mysql:dbname='.$db.'; host='.$host,$user,$pass);

	if(isset($_POST['search'])){
		$key=$_POST['key'];
		$result = $pdo->query("SELECT * FROM tbl_person WHERE surname LIKE '%$key%'");
		echo "<ul>";
		foreach ($result as $row) {
			echo '<li>'.$row['firstname'].' '.$row['surname'].' was born in '.$row['birthdate'].' has email id '. $row['email']. '</li>';
		}
			echo '</ul>';
	}
?>

<form action="" method="POST">
	<input type="text" name="key"><br><br>
	<input type="submit" name="search" value="Search">
</form>