我有以下代碼將數(shù)據(jù)從表單發(fā)送到 SQL 數(shù)據(jù)庫(kù)：<?phpsession_start();ob_start();include 'includes/db_connection.php';if(empty($_POST)){    header("Location: index.php");}else{    try {        $dbconn = OpenCon();        $fname = $_POST['fnameInput'];        $sname = $_POST['snameInput'];        $sex = $_POST['sexInput'];        $dob = $_POST['dobInput'];        $schoolID = $_SESSION['school'];        $sqlstmnt2 = 'INSERT INTO students (`firstName`, `surname`, `dob`, `gender`, `schoolID`) VALUES (:firstName, :surname, :dob, :gender, :schoolID)';        $stmtUsr2 = $dbconn -> prepare($sqlstmnt2);        $stmtUsr2 -> bindValue(':firstName', $fname);        $stmtUsr2 -> bindValue(':surname', $sname);        $stmtUsr2 -> bindValue(':dob', $dob);        $stmtUsr2 -> bindValue(':gender', $sex);        $stmtUsr2 -> bindValue(':schoolID', $schoolID);        $stmtUsr2 -> execute();        // redirect to pupil's profile        header("Location: pupilprofile.php");        die();        }     catch (PDOException $e) {        echo "DataBase Error: The user could not be added.<br>".$e->getMessage();    }     catch (Exception $e) {        echo "General Error: The user could not be added.<br>".$e->getMessage();    }}?>我的數(shù)據(jù)庫(kù)表的結(jié)構(gòu)為，studentID 為主鍵自動(dòng)遞增，除 dob 之外的所有字段均為文本（dob 設(shè)置為日期時(shí)間）發(fā)送數(shù)據(jù)的表單如下所示：<form action="registersubmit.php" method="post">    First Name: <input type="text" autocomplete="off" name="fnameInput"><div id="erfirstname"></div><br>    Surname: <input type="text" autocomplete="off" name="snameInput"><div id="ersurname"></div><br>    Sex:      <select id="sexInput" name="sexInput">        <option value="male">Male</option>        <option value="female">Female</option>    </select><div id="ersex"></div><br>    DOB:    <input type="text" id="datepicker" name="dobInput"><div id="erdob"></p>    <input type="submit" name="pupilRegSubmit" value="Register" onclick="if(validatePupilReg()) this.form.submit()"></form>我沒(méi)有收到 PDO 錯(cuò)誤，但數(shù)據(jù)沒(méi)有插入到表中。我認(rèn)為這可能與日期選擇器與 SQL 中的數(shù)據(jù)類(lèi)型不匹配有關(guān)，但我不確定。有任何想法嗎？