嘗試檢索文件名時文件未上傳

Question

我試圖從php腳本上傳文件（imageupload.php）的一個頁面中檢索文件名，並且希望將它顯示在JavaScript中的另一個頁面中函數（QandATable.php）。但我不知道如何做到這一點

我會告訴你所有的相關代碼，所以你可以關注它，所以你能夠理解發生了什麼。

更新：下面我將向您展示如何上傳文件的步驟。下面的代碼成功上傳文件。

下面是表格（QandATable.php）;

var $fileImage = $("<form action='imageupload.php' method='post' enctype='multipart/form-data' target='upload_target' onsubmit='return imageClickHandler(this);' class='imageuploadform' >" + 
<label>Image File: <input name='fileImage' type='file' class='fileImage' /></label><br/><label class='imagelbl'>" + 
"<input type='submit' name='submitImageBtn' class='sbtnimage' value='Upload' /></label>" + 
"</p><ul class='listImage' align='left'></ul>" + 
"<iframe class='upload_target' name='upload_target' src='#' style='width:0;height:0;border:0px;solid;#fff;'></iframe></form>"); 

在同一個頁面，當用戶提交表單時，它會在下面的函數，它將檢查確認，然後當確認是明確的，它會去到startImageUpload()功能：

function imageClickHandler(imageuploadform){ 
     if(imageValidation(imageuploadform)){ 
      return startImageUpload(imageuploadform); 
     } 
     return false; 
    } 

如果沒有驗證，它將進入下面的隱藏文件輸入的JS函數（QandATable.php），它會將表單提交到發生文件上傳的imageupload.php。當文件上傳時，它會回調stopImageUpload（）函數（QandAtable.php），它會顯示有關文件是否已上傳的消息，並且這是我希望服務器上的文件名稱爲追加。

下面是startImageUpload（）函數：

var sourceImageForm; 

function startImageUpload(imageuploadform){ 

$(imageuploadform).find('.fileImage').css('visibility','hidden'); 
sourceImageForm = imageuploadform; 

return true; 
     } 

下面是PHP腳本在那裏上傳文件（imageupload.php）：

 <?php 

session_start(); 

$result = 0; 

    if ($_FILES["fileImage"]["error"] > 0) { 
     echo "Error: " . $_FILES["fileImage"]["error"] . "<br />"; 
     } else { 
     echo "Upload: " . $_FILES["fileImage"]["name"] . "<br />"; 
     echo "Type: " . $_FILES["fileImage"]["type"] . "<br />"; 
     echo "Size: " . ($_FILES["fileImage"]["size"]/1024) . " Kb<br />"; 
     echo "Stored in: " . $_FILES["fileImage"]["tmp_name"]; 
     } 

if(file_exists("ImageFiles/".$_FILES['fileImage']['name'])) { 
    $_SESSION['fileImage']['name'] = $_FILES['fileImage']['name']; 
    $parts = explode(".",$_FILES['fileImage']['name']); 
    $ext = array_pop($parts); 
    $base = implode(".",$parts); 
    $n = 2; 

    while(file_exists("ImageFiles/".$base."_".$n.".".$ext)) $n++; 
    $_FILES['fileImage']['name'] = $base."_".$n.".".$ext; 

    move_uploaded_file($_FILES["fileImage"]["tmp_name"], 
    $_SESSION['fileImage']['name'] = $_FILES['fileImage']['name']; 
    "ImageFiles/" . $_FILES["fileImage"]["name"]); 
    $result = 1; 

} 
    else 
     { 
     move_uploaded_file($_FILES["fileImage"]["tmp_name"], 
     "ImageFiles/" . $_FILES["fileImage"]["name"]); 
     $result = 1; 

     } 

?> 
     <script language="javascript" type="text/javascript"> 
    window.top.window.stopImageUpload(<?php echo $result;?>); 
    </script> 

最後，當上傳完成後，又回到stopUploadImage（）函數（QandATable.php）顯示消息是否成功上傳文件。這也是我希望追加從服務器上傳的文件名的地方。

function stopImageUpload(success){ 

      var result = ''; 
      if (success == 1){ 
result = '<span class="msg">The file was uploaded successfully!</span><br/><br/>'; 
      $('.listImage').append('<br/>'); 
      } 
      else { 
result = '<span class="emsg">There was an error during file upload!</span><br/><br/>'; 
      } 

    return true; 

    } 

Answer 1

要在stopImageUpload()函數調用我會做到以下幾點：

來源：

<script language="javascript" type="text/javascript"> 
window.top.windo.stopImageUpload(<?php echo $result;?>); 
</script> 

要：

<script language="javascript" type="text/javascript"> 
window.top.stopImageUpload(<?php echo "'$result'";?>); 
</script> 

要通過文件名一頁一頁地用會話變量。我建議類似於以下的東西（因爲你已經在使用會話）：

if(file_exists("ImageFiles/".$_FILES['fileImage']['name'])) { 
    $_SESSION['fileImage']['name'] = $_FILES['fileImage']['name'];   
    $parts = explode(".",$_FILES['fileImage']['name']); 
    $ext = array_pop($parts); 
    $base = implode(".",$parts); 
    $n = 2; 

只要確保有session_start();你希望將這些變量傳遞給每一個頁面的頂部。

故障排除通過運行這個：

<?php 

    if ($_FILES["file"]["error"] > 0) { 
     echo "Error: " . $_FILES["file"]["error"] . "<br />"; 
     } else { 
     echo "Upload: " . $_FILES["file"]["name"] . "<br />"; 
     echo "Type: " . $_FILES["file"]["type"] . "<br />"; 
     echo "Size: " . ($_FILES["file"]["size"]/1024) . " Kb<br />"; 
     echo "Stored in: " . $_FILES["file"]["tmp_name"]; 
     } 
    ?> 

要解決您的unexpected ';'錯誤我搬到外面的$ _SESSION行：

<?php 

session_start(); 

$result = 0; 

    if ($_FILES["fileImage"]["error"] > 0) { 
     echo "Error: " . $_FILES["fileImage"]["error"] . "<br />"; 
     } else { 
     echo "Upload: " . $_FILES["fileImage"]["name"] . "<br />"; 
     echo "Type: " . $_FILES["fileImage"]["type"] . "<br />"; 
     echo "Size: " . ($_FILES["fileImage"]["size"]/1024) . " Kb<br />"; 
     echo "Stored in: " . $_FILES["fileImage"]["tmp_name"]; 
     } 

if(file_exists("ImageFiles/".$_FILES['fileImage']['name'])) { 
    $_SESSION['fileImage']['name'] = $_FILES['fileImage']['name']; 
    $parts = explode(".",$_FILES['fileImage']['name']); 
    $ext = array_pop($parts); 
    $base = implode(".",$parts); 
    $n = 2; 

    while(file_exists("ImageFiles/".$base."_".$n.".".$ext)) $n++; 
    $_FILES['fileImage']['name'] = $base."_".$n.".".$ext; 

    move_uploaded_file($_FILES["fileImage"]["tmp_name"], 
    "ImageFiles/" . $_FILES["fileImage"]["name"]); 
    //The error was thrown because you had $_SESSION inside the move_upload_file() 
    //Can't have a ; inside a function 
    //However, you need to remove this $_SESSION anyway, it is already declared above, 
    //it wouldn't work here anyway since your code breaks apart the $_FILES array. 
    //$_SESSION['fileImage']['name'] = $_FILES['fileImage']['name']; 
    $result = 1; 

} 
    else 
     { 
     move_uploaded_file($_FILES["fileImage"]["tmp_name"], 
     "ImageFiles/" . $_FILES["fileImage"]["name"]); 
     $result = 1; 

     } 

?> 
     <script language="javascript" type="text/javascript"> 
    window.top.window.stopImageUpload(<?php echo $result;?>); 
    </script>