>你好，我有一个选择，我有一些由php中的日期数组函数生成的选项，但我想知道选择了哪一个，所以当我使用它时，我可以检查选择了哪一个，以便我可以对其执行操作
<select>
<?php
function getDays( $year, $startMonth = 1, $startDay = 1, $dayOfWeek = 'monday' ) {
$start = new DateTime( sprintf( '%04d-%02d-%02d', $year, $startMonth, $startDay ) );
$start->modify( $dayOfWeek );
$end = new DateTime( sprintf( '%04d-12-31', $year ) );
$end->modify( '+1 day' );
$interval = new DateInterval( 'P1W' );
$period = new DatePeriod( $start, $interval, $end );
foreach ( $period as $dt ) {
echo "<option value=";
echo $dt->format( "d/m/Y" );
echo '">';
echo $dt->format( "d/m/Y" );
echo "</option>";
}
}
getDays( 2016, 2, 12, 'monday' );
?>
</select>
<?php
(isset($_POST["company"])) ? $company = $_POST["company"] : $company=1;
?>
<form>
<select id="company" name="company">
<option <?php if ($company == 1 ) echo 'selected' ; ?> value="1">Apple</option>
<option <?php if ($company == 2 ) echo 'selected' ; ?> value="2">Samsung</option>
<option <?php if ($company == 3 ) echo 'selected' ; ?> value="3">HTC</option>
</select>
</form>