利用php创建日期选择框

<form action="" method="post" ><?php$months = array (1 => 'January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December');$days = range(1,31);$years = range(2008,2018);echo '<select name="month" >';foreach ($months as $key => $value) {echo "<option value=\"$key\">$value</option>";}echo '</select>';echo '<select name="day" >';foreach ($days as $value) {echo "<option value=\"$value\">$value</option>";}echo '</select>';echo '<select name="year" >';foreach ($years as $value) {echo "<option value=\"$value\">$value</option>";}echo '</select>';?></form>