PHP/MYSQL/MVC如何獲取當前登錄的用戶名

Question

我是PHP MVC的新手，真的開始理解這個概念。我有一個問題在文本框中顯示當前用戶名。

請檢查下面我的代碼：

<?php 
//require_once (Path::controllerClassPath(). "Summarycontroller.php"); 
require_once (Path::controllerClassPath(). "CalendarController.php"); 

//$summary = new SummaryController($this->sessionHandler->getUserId()); 
$calendar = new CalendarController($this->sessionHandler); 

$userId = $this->sessionHandler->getUserId(); 
?> 

<div id="fileleaverequestholiday"> 
<?php 
echo '<form name="fileleaverequestholidayform" id="fileleaverequestholidayform" action="" method="post">'; 
echo '<fieldset class="fileleavetables"><legend>Request Leave</legend>'; 
echo '<table id="fileleaverequesttable">'; 
echo '<tr>'; 
//echo '<td class="fileleavetd">Name:</td><td class="fileleavetd"><input id="fileleaveemployeename" type="text" name="fileleaveemployeename"/></td>'; 
echo '<td class="fileleavetd">Name:</td><td class="fileleavetd"><input id="fileleaveemployeename" type="text" name="fileleaveemployeename" value="'.$retval.'" /> </td>'; ?> 

我註釋掉的代碼，該片段：

$userId = $this->sessionHandler->getUsername(); 

    $dbhost = 'localhost'; 
    $dbuser = 'root'; 
    $dbpass = ''; 

    $conn = mysql_connect($dbhost, $dbuser, $dbpass); 
    if(! $conn) 
    { 
     die('Could not connect: ' . mysql_error()); 
    } 

    $sql = "SELECT employee_name FROM employee WHERE employee_username = $userId" ; 

    mysql_select_db('test'); 
    $retval = mysql_query($sql, $conn); 
    print($retval); 
    if(! $retval) 
    { 
     die('Could not update data: ' . mysql_error()); 
    } 

更新：

<div id="fileleaveinsertholiday"> 
<?php 
if(isset($_POST['fileleaveemployeename'], 
      $_POST['leavetype'], 
      $_POST['filerequestreason'], 
      $_POST['filerequeststartdate'])){ 

if(isset($_POST['filerequestenddate'])){ 
    if($_POST['filerequestenddate'] > $_POST['filerequeststartdate']){ 
     $result = $calendar->manageFileHoliday(
         $_POST['fileleaveemployeename'], 
         $_POST['leavetype'], 
         $_POST['filerequestreason'], 
         $_POST['filerequeststartdate'], 
         '1', 
         $_POST['filerequestenddate'] 
        ); 
     if($result == Status::INSERT_SUCCESS){ 
      echo '<b>Entry for '.$_POST['fileleaveemployeename'].' from '.$_POST['filerequeststartdate'].' to '.$_POST['filerequestenddate'].' submitted.</b>';   
     } 
     else{ 
      echo '<b>Entry was not submitted. No such name exists in the list.</b>'; 
     }    
    } 
    else{ 
     echo '<b>Entry was not submitted. Invalid Date Range.</b>'; 
    } 
} 
else{ 
     $result = $calendar->manageFileHoliday(
      $_POST['fileleaveemployeename'], 
      $_POST['leavetype'], 
      $_POST['filerequestreason'], 
      $_POST['filerequeststartdate'], 
      $_POST['requestduration'] 
     ); 
     if($result == Status::INSERT_SUCCESS){ 
      echo '<b>Entry for '.$_POST['fileleaveemployeename'].' on '.$_POST['filerequeststartdate'].' submitted.</b>'; 
     } 
     else{ 
      echo '<b>Entry was not submitted. No such name exists in the list.</b>'; 
     } 
} 
} 
?> 
</div> 

因爲當我說這個，我頁面顯示不正確。任何幫助？謝謝。

Answer 1

嘗試下面的代碼..

mysql_select_db('test', $conn) 

$retval = mysql_query($sql); 

，而不是

mysql_select_db('test'); 

$retval = mysql_query($sql, $conn);