<?php
$connection = mysqli_connect('localhost', "my_user", "my_password", "my_db");
$output = '';
if(isset($_POST['search'])) {
	$searchkey = $_POST['search'];
	$searchkey = preg_replace("/[^0-9a-z]/i", "", $searchkey);
	//echo $searchkey;
	$query = mysqli_query($connection,"SELECT * FROM building_tc WHERE profile LIKE '%$searchkey%' OR server LIKE '%$searchkey%'") or die("Не удалось найти!");
	$count = mysqli_num_rows($query);
	//echo $count;
	if($count == 0) {
		$output = "Нет результатов поиска!";
	}
	else {
		while($row=mysqli_fetch_array($query)) {
			$profile = $row['profile'];
			$server = $row['server'];
			$output .= '<div>'.$profile.''.$server.'</div>';
		}
	}
	echo "$output";
}
?>
<form action="" method="post"> <input type="text" name="search" placeholder="Search"> <input type="submit" value="Поиск" /></form>