Function

<?php
$conn = mysqli_connect("localhost", "root", "" , "phpdasar");
function query($query) {
	global $conn;
	$result = mysqli_query($conn, $query);
	$rows = [];
	while( $row = mysqli_fetch_assoc($result)) {
		$rows[] = $row;
    }
    return $rows;
 }
function tambah($data) {

	global $conn;

	 $nrp = htmlspecialchars($data["nrp"]);
	 $nama = htmlspecialchars($data["nama"]);
	 $email = htmlspecialchars($data["email"]);
	 $jurusan = htmlspecialchars($data["jurusan"]);
	 $gambar = htmlspecialchars($data["gambar"]);

	 $query = "INSERT INTO mahasiswa
				VALUES
				('', '$nrp', '$nama', '$email', '$jurusan', '$gambar')
			";
	mysqli_query($conn, $query);

	return mysqli_affected_rows($conn);

}

function hapus($id) {
	global $conn;
	mysqli_query($conn, "DELETE FROM mahasiswa WHERE id = $id");
	return mysqli_affected_rows($conn);
}

 function ubah($data) {
 global $conn;

 	 $id = $data["id"];
 	 $nrp = htmlspecialchars($data["nrp"]);
 	 $nama = htmlspecialchars($data["nama"]);
 	 $email = htmlspecialchars($data["email"]);
	 $jurusan = htmlspecialchars($data["jurusan"]);
 	 $gambar = htmlspecialchars($data["gambar"]);

 	 $query = " UPDATE mahasiswa SET
 	 				nrp = '$nrp',
 	 				nama = '$nama',
 	 				email = '$email',
 	 				jurusan = 'jurusan',
 	 				gambar = '$gambar'
	 			WHERE id = $id
 			";

 	mysqli_query($conn, $query);

 	return mysqli_affected_rows($conn);


 }

function cari($keyword) {
	$query = "SELECT * FROM mahasiswa WHERE
	nama LIKE '%$keyyword%' OR
	nrp LIKE '%$keyyword%' OR
	email LIKE '%$keyyword%' OR
	jurusan LIKE '%$keyyword%'

	";
	return query($query);
}