CURD (Create) master_mahasiswa2.php

<?php
$a = !empty($_GET['a']) ? $_GET['a'] : "reset";
$kdb = koneksidatabase();
$a = @$_GET["a"];
$sql = @$_POST["sql"];
switch ($sql) {
    case "insert": sql_insert();
      break;
}

switch ($a) {
    case "reset" :  curd_read();   break;
    case "tambah":  curd_create(); break;
    default : curd_read(); break;
}
  mysqli_close($kdb);

function curd_read()
{
  $hasil = sql_select();
  $i=1;
  ?>
  <H3> MASTER DATA MAHASISWA  </H3>
  <a href="master_mahasiswa2.php?a=tambah" >CREATE</a>
  <table border="1" cellpadding="10" cellspacing="0">
  <tr>
  <td>No</td>
  <td>ID Mahasiswa</td>
  <td>Nama Mahasiswa</td>
  <td>Publish</td>
  <td>Aksi</td>
  </tr>
  <?php
  while($baris = mysqli_fetch_array($hasil))
  {
  ?>
  <tr>
  <td><?php echo $i; ?></td>
  <td><?php echo $baris['idmahasiswa']; ?></td>
  <td><?php echo $baris['nama']; ?></td>
  <td><?php echo $baris['publish']; ?></td>
  <td>
    <a href="#" class="btn btn-default btn-xs">UPDATE</a>
    <a href="#" class="btn btn-default btn-xs">DELETE</a>
  </td>
  </tr>
  <?php
   $i++;
  }
  ?>
  </table>
   <?php
  mysqli_free_result($hasil);
}
 ?>


<?php
function formeditor($row)
  {
?>
<table>
<tr>
<td width="200px">Nama Mahasiswa</td>
<td><input type="text" name="nama" id="nama" maxlength="25" size="25" value="<?php  echo trim($row["nama"]) ?>" ></td>
</tr>
<tr>

<tr>
<td >PUBLIKASI</td>
<td >
<?php  $publish = str_replace('"', '"', trim($row["publish"])); ?>
<input type="radio" name="publish" id="publish" value="T" <?php  if($publish=='T' || $publish=='') {echo "checked=\"checked\""; } else {echo ""; }  ?> />
<label>Dipublikasikan</label><br>
<input type="radio" name="publish" id="publish" value="F" <?php  if($publish=='F') {echo "checked=\"checked\""; } else {echo ""; } ?> />
<label>Tidak dipublikasikan</label>
</td>
</tr>
</table>
<?php  }?>

<?php
function curd_create()
{
?>
<h3>Penambahan Data mahasiswa</h3><br>
<a href="master_mahasiswa2.php?a=reset">Batal</a>
<br>
<form action="master_mahasiswa2.php?a=reset" method="post">
<input type="hidden" name="sql" value="insert" >
<?php
$row = array(
  "nama" => "",
  "publish" => "T");
formeditor($row)
?>
<p><input type="submit" name="action" value="Simpan" ></p>
</form>
<?php } ?>

<?php
function koneksidatabase()
{
    include('../koneksi/koneksi.php');
    return $kdb;
}

function sql_select()
{
  global $kdb;
  $sql = " select * from mahasiswa ";
  $hasil = mysqli_query($kdb, $sql) or die(mysql_error());
  return $hasil;
}

function sql_insert()
{
  global $kdb;
  global $_POST;
  echo $_POST["nama"];
  $sql  = " insert into `mahasiswa` (`nama`, `publish`) values ( '".$_POST["nama"]."', '".$_POST["publish"]."' )";
  mysqli_query($kdb, $sql) or die( mysql_error());
}

?>