如何刪除臨時下載的文件？

Question

我的web應用程序通過TCPDF打開PDF文件，當用戶點擊一個按鈕：

function showOverviewThroughPdf(){ 

    $oResp = $this->getResponse("tcpdf") ; 

    //NEW PDF DOCUMENT 
    $oResp->outputFileName = "liste_concepteur_matiere.pdf"; 
    $oResp->doDownload = false; 
    $oResp->initPdf('L', 'mm', 'A4', null, null); 

    //settting 
    $oResp->tcpdf->SetFont ('pdfahelvetica', '', 12) ; 

    // set margins 
    $oResp->tcpdf->SetMargins(20, 20, 20) ; 
    $oResp->tcpdf->SetHeaderMargin(15) ; 
    $oResp->tcpdf->SetFooterMargin(15) ; 

    $oResp->tcpdf->SetAutoPageBreak(TRUE, 20) ; 

    // set image scale factor 
    $oResp->tcpdf->setImageScale(1.25); 

    $oResp->tcpdf->AddPage(); 

    $iIdMatiere = $_SESSION["id_matiere"] ; 

    jClasses::inc ("sujet~questionSrv") ; 
    jClasses::inc ("commun~toolsSrv") ; 

    $oCurrentUser = jAuth::getUserSession() ; 
    $oCurrentUser = toolsSrv::getByCondition ("utilisateurs~users", "login", $oCurrentUser->login) ; 
    $oCurrentUser = $oCurrentUser [0] ; 

    $Questions = questionSrv::getAllQuestionsNotValidateByCondition ($iIdMatiere, null , $oCurrentUser->id, "id_question" , null,null, null) ; 

    $zHtml = ""; 

    $i = 1 ; 
    foreach ($Questions["toQuestions"] as $tab){ 
     if($tab->id_type_question == 2){ 
      $zHtml .= "<dt> ". $i ." - " . questionSrv::text_to_texthtml($tab->lib_question) . " </dt>" ; 

      $zHtml .= "<dd>&nbsp;a)&nbsp;". questionSrv::text_to_texthtml($tab->qcm_r1)."</dd>";  
      $zHtml .= "<dd>&nbsp;b)&nbsp;". questionSrv::text_to_texthtml($tab->qcm_r2)."</dd>"; 
      $zHtml .= "<dd>&nbsp;c)&nbsp;". questionSrv::text_to_texthtml($tab->qcm_r3)."</dd>";  

      if(trim($tab->qcm_r4) !="") 
      $zHtml .= "<dd>&nbsp;d)&nbsp;".questionSrv::text_to_texthtml($tab->qcm_r4)."</dd>"; 

      if(trim($tab->qcm_r5) !="") 
      $zHtml .= "<dd>&nbsp;e)&nbsp;".questionSrv::text_to_texthtml($tab->qcm_r5)."</dd>"; 

      if(trim($tab->qcm_r6) !="") 
      $zHtml .= "<dd>&nbsp;f)&nbsp;".questionSrv::text_to_texthtml($tab->qcm_r6)."</dd>" ; 

     } else { 
      $zHtml .= "<dt>". $i ." - " . questionSrv::text_to_texthtml($tab->lib_question) . "</dt>"; 

      if($tab->epreuve_phase_sess != 1){ 
       $zHtml .= "<dd>&nbsp;a)&nbsp;VRAI</dd>";  
       $zHtml .= "<dd>&nbsp;b)&nbsp;FAUX</dd>";  
      } 
     } 

     $i++; 
    } 

    $oResp->tcpdf->writeHTML($zHtml, true, 0, true, 0); // this opens the pdf thus creating a temporary file 

    return $oResp ; 
} 

在運行時出現在客戶端的計算機瀏覽器中創建的臨時文件。那麼如何在特定事件中刪除這個文件，例如，當用戶從我的應用程序斷開連接？

Answer 1

你需要返回pdf文件;只需在最後添加這兩行而不是返回$ oResp;

$oResp->tcpdf->Output($file_name, 'F'); 
return $file_name ;