selected gampang

<?php
echo "Today is " . date("Y/m/d") . "<br>";
echo "Today is " . date("Y.m.d") . "<br>";
echo "Today is " . date("Y") . "<br>";
echo "Today is " . date("l"). "</br>";


echo "<select name='tahun'><option selected>";
$tahun=2015;
for ($i=$tahun; $i<=$tahun +8 ; $i++)
echo "<option value=$i>$i<br>";
echo "</option></select>";

?>