// isi config.php (menggunakan mysqli procedural), diinclude di setiap halaman, pada baris teratas
<?php 
    session_start();
    error_reporting(E_ALL & ~E_NOTICE);

    $servername = "localhost";
    $username = "rpl";
    $password = "optimis";
    $dbname = "rpl_koperasi";

    // Create connection
    $conn = mysqli_connect($servername, $username, $password, $dbname);

    // Check connection
    if (!$conn) {
        die("Connection failed: " . mysqli_connect_error());
    }

    include 'functions.php';
?>

// isi functions.php, diinclude oleh config.php
<?php 

	// mengecek user logged in
	function userLoggedIn() {
		return (isset($_SESSION["username"])) ? true : false;
	}

	// membatasi akses berdasarkan level user
	function checkUserLevel($allowedLevels) {
		return (in_array($_SESSION['level_user'], $allowedLevels)) ? true : false;
	}
	
	// membatasi akses ke halaman tertentu berdasarkan level user
	function batasiHalaman($allowedLevels) {
		if (!checkUserLevel($allowedLevels)) {
			setmsg('Anda tidak memiliki hak akses ke halaman yang Anda tuju.', true);
			go('index.php');
		}
	}

	// meringkas header('Location')
	function go($url) {
		header("Location: ".$url); exit;
	}

	// menyiapkan flash message
	function setmsg($text, $error = false) {
		$_SESSION["msg"] = $text;
		$_SESSION["msgerror"] = $error;
	}
	
	// mencetak flash message
	function printmsg() {
		$style = ($_SESSION["msgerror"]) ? "alert-danger" : "alert-success";
		if ($_SESSION["msg"] != "") {
			echo '<div class="alert '.$style.' alert-dismissable">
                                <button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button>
                                '.$_SESSION['msg'].'
                            </div>';
			unset($_SESSION["msg"]);	
			unset($_SESSION["msgerror"]);	
		}
	}

	function tanggal($d) {
		$hari = array("Minggu", "Senin", "Selasa", "Rabu", "Kamis", "Jum'at", "Sabtu"); 
		$bulan = array("", "Januari", "Februari", "Maret", "April", "Mei", "Juni", "Juli", "Agustus", "September", "Oktober", "November", "Desember"); 
		return $hari[date("w", $d)]. date(", j ", $d).$bulan[date("n", $d)]. date(" Y - H:i", $d);
	}	

	function hrg($n) {
		return "Rp. ".number_format($n, 0, ',', '.');	
	}

?>