我正在制作一個(gè)事件日歷。我想使用按鈕在 php 中回顯一個(gè)函數(shù)。我的實(shí)際代碼：日歷.php<?php include_once('functions.php'); ?> <?php echo getCalender(); ?>函數(shù).php<?phpif(isset($_POST['func']) && !empty($_POST['func'])){    switch($_POST['func']){        case 'getCalender':            getCalender($_POST['year'],$_POST['month']);            break;        case 'getEvents':            getEvents($_POST['date']);            break;        default:            break;    }}//Get calendar full HTMLfunction getCalender($year = '',$month = ''){    $dateYear = ($year != '')?$year:date("Y");    $dateMonth = ($month != '')?$month:date("m");    $date = $dateYear.'-'.$dateMonth.'-01';    $currentMonthFirstDay = date("N",strtotime($date));    $totalDaysOfMonth = cal_days_in_month(CAL_GREGORIAN,$dateMonth,$dateYear);    $totalDaysOfMonthDisplay = ($currentMonthFirstDay == 7)?($totalDaysOfMonth):($totalDaysOfMonth + $currentMonthFirstDay);    $boxDisplay = ($totalDaysOfMonthDisplay <= 35)?35:42;?>    <div id="calender_section">    //} <script type="text/javascript">    function getCalendar(target_div,year,month){        $.ajax({            type:'POST',            url:'functions.php',            data:'func=getCalender&year='+year+'&month='+month,            success:function(html){                $('#'+target_div).html(html);            }        });    }function getEvents(date){        $.ajax({            type:'POST',            url:'functions.php',            data:'func=getEvents&date='+date,            success:function(html){                $('#event_list').html(html);                $('#event_add').slideUp('slow');                $('#event_list').slideDown('slow');            }        });    }現(xiàn)在我想使用按鈕來調(diào)用 getcalendar 函數(shù)。我試過這個(gè)：日歷.php <form class="" action="" method="post">               <input type="button" value="Dhaka" onclick="<?php echo getCalender(); ?>"/>              </form>現(xiàn)在這不是等待按鈕點(diǎn)擊。當(dāng)我刷新頁(yè)面時(shí)，即使我沒有單擊按鈕，它也會(huì)顯示日歷。我該如何解決這個(gè)問題？