array_push覆蓋以前創建的對象PHP

Question

我想創建一個對象數組，然後我可以顯示，表單被提交時創建的對象。

第一個對象被成功添加，但是當我添加另一個對象時，它會簡單地覆蓋最後創建的對象。任何人都可以看到我要去哪裏嗎？

<?php require_once $_SERVER['DOCUMENT_ROOT'].'/includes/classes/Goal.php'; ?> 
<?php require_once $_SERVER['DOCUMENT_ROOT'].'/global/head.php'; ?> 
<?php require_once $_SERVER['DOCUMENT_ROOT'].'/config/init.php'; ?> 

<?php 

$input['title'] = ""; 
$input['deadline'] = ""; 
$input['description'] = ""; 

if(!isset($_SESSION['goals'])) {$_SESSION['goals'] = array();} 

if (isset($_POST['submit'])) { 

$_SESSION['goalCount'] ++; 

$input['title'] = htmlentities($_POST ['title'],ENT_QUOTES); 
$input['deadline'] = htmlentities($_POST ['deadline'],ENT_QUOTES); 
$input['description'] = htmlentities($_POST ['description'],ENT_QUOTES); 
convertDate($input['deadline']); 


${'goal'. $_SESSION['goalCount']} = new Goal($input['title'], $input['description'], $_SESSION['username'], $input['deadline']); 
array_push($_SESSION['goals'], ${'goal'. $_SESSION['goalCount']}); 

?> 



<div class="top"> 
    <p>h</p> 
</div> 

<div class="container"> 
    <div class="sixteen columns topbar"> 
     <?php require $_SERVER['DOCUMENT_ROOT'].'/global/header.php'; ?><!-- Content Begins --> 
     <div class="content"> 

     <h1> OO Test Page - Batch add goals</h1><hr/> 

     <div class="six columns"> 

     <form action="" method="post"> 
      <fieldset> 
       <div> 
       <h4>Title</h4> 
        <span id='title-result'></span> 
        <label for="title"></label><br /> 
        <input type="text" id="title" name="title" placeholder="e.g. Graduate" value="" required aria-required="true"> 

       </div> 
       <div> 
       <h4>Description</h4> 
       <span id='description-result'></span> 
        <label for="description"></label> 


        <textarea type="description" id="description" placeholder="e.g. with first-class honours" name="description" value="" required aria-required="true"></textarea> 
       </div> 
       <div> 
       <h4>Deadline</h4> 
       <span id='description-result'></span> 
        <label for="deadline"></label> 
        <input rows="2"type="date" id="datepick" placeholder="" name="deadline" value="" required aria-required="true"/> 

       </div> 

       <div class="submit"> 
        <input type="submit" name="submit" value="Add"> 
       </div> 
      </fieldset> 
     </form></div> 


    <div class="ten columns"> 
    <?php 


    foreach ($_SESSION['goals'] as $goal) 
    { 
     echo '<div class="goal"><h4>'. $goal->title .'</h4>'. $goal->desc .'</h4><p>'. $goalCount .'</p></div>'; 
    } 

    echo Goal::$counter; 
    var_dump($_SESSION['goals']) 

    ?> 
    </div> 
</div> 

      <!-- Content Ends --> 
     <?php require $_SERVER['DOCUMENT_ROOT'].'/global/footer.php'; ?> 
    </div> 
</div> 
</body> 
</html> 

Answer 1

簡單地初始化您需要的會話變​​量。並且不需要使用變量變量並將其用作內部的計數器。通常在會話內部推送這些對象。

實施例：

<?php require_once $_SERVER['DOCUMENT_ROOT'].'/includes/classes/Goal.php'; ?> 
<?php require_once $_SERVER['DOCUMENT_ROOT'].'/global/head.php'; ?> 
<?php require_once $_SERVER['DOCUMENT_ROOT'].'/config/init.php'; ?> 
<?php 

if(!isset($_SESSION['goals'], $_SESSION['goalCount'])) { 
    $_SESSION['goals'] = array(); 
    $_SESSION['goalCount'] = 0; 
} 

if (isset($_POST['submit'])) { 

    $_SESSION['goalCount'] += 1; 

    $input['title'] = htmlentities($_POST ['title'],ENT_QUOTES); 
    $input['deadline'] = htmlentities($_POST ['deadline'],ENT_QUOTES); 
    $input['description'] = htmlentities($_POST['description'],ENT_QUOTES); 
    convertDate($input['deadline']); 

    $goal = new Goal($input['title'], $input['description'], $_SESSION['username'], $input['deadline']); 
    $_SESSION['goals'][] = $goal; 
        //^add another dimension 

} // missing closing curly brace 

?> 

<div class="top"> 
    <p>h</p> 
</div> 

<div class="container"> 
    <div class="sixteen columns topbar"> 
     <?php require $_SERVER['DOCUMENT_ROOT'].'/global/header.php'; ?><!-- Content Begins --> 
     <div class="content"> 
      <h1> OO Test Page - Batch add goals</h1><hr/> 
      <div class="six columns"> 
       <form action="" method="POST"> 
        <fieldset> 
         <div> 
         <h4>Title</h4> 
          <span id='title-result'></span> 
          <label for="title"></label><br /> 
          <input type="text" id="title" name="title" placeholder="e.g. Graduate" value="" required aria-required="true"> 

         </div> 
         <div> 
         <h4>Description</h4> 
         <span id='description-result'></span> 
          <label for="description"></label> 


          <textarea type="description" id="description" placeholder="e.g. with first-class honours" name="description" value="" required aria-required="true"></textarea> 
         </div> 
         <div> 
         <h4>Deadline</h4> 
         <span id='description-result'></span> 
          <label for="deadline"></label> 
          <input rows="2"type="date" id="datepick" placeholder="" name="deadline" value="" required aria-required="true"/> 

         </div> 

         <div class="submit"> 
          <input type="submit" name="submit" value="Add"> 
         </div> 
        </fieldset> 
       </form> 
      </div> 
     </div> 


    <div class="ten columns"> 
    <?php 
    foreach ($_SESSION['goals'] as $goal) { 
     echo '<div class="goal"><h4>'. $goal->title .'</h4>'. $goal->desc .'</h4><p>'. $goalCount .'</p></div>'; 
    } 
    ?> 
    </div> 

      <!-- Content Ends --> 
     <?php require $_SERVER['DOCUMENT_ROOT'].'/global/footer.php'; ?> 
    </div> 
</div> 

旁註：始終打開錯誤報告。