simple form state

fiddle_503425.php

<?php 
	$_POST['kelas'] = isset($_POST['kelas']) ? $_POST['kelas'] : 0; // this line removes notices (ignore this)
	$_POST['tahun'] = isset($_POST['tahun']) ? $_POST['tahun'] : 0; // this line removes notices (ignore this)
?>

<form method='post'>
	<select name='kelas'>
		<option value=0>Pilih kelas</option>
		<option value=1 <?php if($_POST['kelas']==1) echo 'selected' ?> >X-1</option>
		<option value=2 <?php if($_POST['kelas']==2) echo 'selected' ?> >X-2</option>
		<option value=3 <?php if($_POST['kelas']==3) echo 'selected' ?> >X-3</option>
	</select>
	
	<select name='tahun'>
		<option value=0>Pilih tahun</option>
		<option value=2012 <?php if($_POST['tahun']==2012) echo 'selected' ?> >2012/2013</option>
		<option value=2011 <?php if($_POST['tahun']==2011) echo 'selected' ?> >2011/2012</option>
		<option value=2010 <?php if($_POST['tahun']==2010) echo 'selected' ?> >2010/2011</option>
	</select>
	
	<input type='submit' name='submit' />
</form>