我想從我的database.php文件中調(diào)用特定的函數(shù)，并獲取返回的值。在這里，我試圖做到這一點(diǎn)：js：function submit_verification_code(){$.ajax({url: "database.php",type: "post",data: ({    'code': code_entered,}),dataType:"text",context: this,success : function(response) {    console.log('RESPONSE: ' + response);    //OPTIONAL_FUNCTION_TO_DO_SOMETHING_WITH_THE_RESPONSE(response);},error: function(jqXHR,textStatus,errorThrown){    //OPTIONAL_FUNCTION_TO_DO_SOMETHING_WITH_THE_ERROR(jqXHR);    console.log(errorThrown);}});}database.php if(isset($_POST['code'])){    does_code_match($_POST['code']); } function does_code_match($code){    connect();            die('test');    $sql = 'select * from emailstobeverified where email=';    $sql .= "'" . $_SESSION['email'] . "'";    $sql .= ' and verification_code=';    $sql .= $code;    $sql .= ';';    $count = query($sql)->num_rows;    die(strval($count));    disconnect();    echo strval($count);    exit;    //Once you've outputted, make sure nothing else happens }does_code_match函數(shù)執(zhí)行，并在調(diào)用<br />時(shí)打印控制臺(tái)日志console.log("RESPONSE" + response)。但我希望它打印出的價(jià)值$count