proses.php

<?php

include '../koneksi.php';

$nama_kerusakan = $_POST['nama_kerusakan'];
$nama_gejala        = $_POST['nama_gejala'];
$cf         = $_POST['cf'];


$input          = mysqli_query($connect, "INSERT INTO tb_relasi (nama_kerusakan, nama_gejala, cf)
VALUES ('$nama_kerusakan', '$nama_gejala', '$cf')");

if($input){
    echo "<script>alert('Data Berhasil Ditambah');document.location.href='relasi.php'</script>";

}else{
    echo "<script>alert('Data Gagal Ditambah');document.location.href='add_relasi.php'</script>";

}

?>