PHP count（）無法正確計數

我想將多個文件上傳到目錄。我已經「寫入」的代碼適用於一個文件，但是當我嘗試上傳多個文件時，它不起作用。我試圖確定故障在哪裏，我相信它與計數有關。儘管當我嘗試回顯有多少文件正在計數時，無論有多少文件被選中，我都會得到'1'。我知道這隻適用於一個文件，因爲我返回的變量總是'1'，因此只能用於一個文件。PHP count（）無法正確計數

收集我使用HTML表單與POST方法 HTML文件：

<form id="upload" action="upload.php" method="POST" enctype="multipart/form-data"> 

<fieldset> 
<legend>HTML File Upload</legend> 

<input type="hidden" id="MAX_FILE_SIZE" name="MAX_FILE_SIZE" value="300000" /> 

<div> 
    <label for="fileselect">Files to upload:</label> 
    <input type="file" id="fileselect" name="fileselect[]" multiple="multiple" /> 
    <div id="filedrag">or drop files here</div> 
</div> 

<div id="submit"> 
    <button type="submit">Upload Files</button> 
</div> 

</fieldset> 

</form>

的JavaScript我使用使拖拽功能，並從被來源： http://www.sitepoint.com/html5-file-drag-and-drop/

罪魁禍首 PHP：

if(isset($_FILES['fileselect']['tmp_name'])) { 
    // Number of uploaded files 
    $num_files = count($_FILES['fileselect']['tmp_name']); 
    echo $num_files; 
    /** loop through the array of files ***/ 
    for($i=0; $i <= $num_files;$i++) { 
     // check if there is a file in the array 
     if(!is_uploaded_file($_FILES['fileselect']['tmp_name'][$i])) { 
      $messages[] = 'No file uploaded'; 
     } 
     else { 
      $unique = substr(number_format(time() * rand(),0,'',''),0,10); 

      $newImg = "img".$unique; 

      $filename = basename($_FILES['file']['name'][$i]); 
      $extension = pathinfo($filename, PATHINFO_EXTENSION); 
      //$new  = md5($filename).'.'.$extension; 

      $the_file_type = $_FILES['fileselect']['type'][$i]; 
      $the_file_size = $_FILES['fileselect']['size'][$i]/1024; 
      $the_file_name = $_FILES['fileselect']['name'][$i]; 

      $ok=1; 
      //This is our size condition 
      if ($uploaded_size > 350000) { 
       $messages[] = "Your file is too large.<br>"; 
       $ok=0; 
      } 

      //This is our limit file type condition 
      if ($uploaded_type =="text/php") { 
       $messages[] = "No PHP files<br>"; 
       $ok=0; 
      } 

      //Here we check that $ok was not set to 0 by an error 
      if ($ok==0) { 
       $messages[] = "Sorry your file was not uploaded"; 
      } 

      //If everything is ok we try to upload it 
      else { 
       if(move_uploaded_file($_FILES['fileselect']['tmp_name'][$i], "uploads/{$newImg}")) { 
        echo "The file ". basename($_FILES['uploadedfile']['name'][$i]). " has been uploaded"; 
        echo "<br />"; 
        //echo $the_file_type; 
        //echo "<br />"; 
        //echo $unique; 
        //echo "<span>schmeckle!</span>"; 
        //echo "<br />"; 
        //echo $the_file_size; 
        //echo "<br />"; 
        //echo $the_file_name; 

        $insertSQL = "INSERT INTO interviews_media_images SET "; 
         $insertSQL .= "fileType='$the_file_type', "; 
         $insertSQL .= "fileRef='$newImg', "; 
         $insertSQL .= "fileSize='$the_file_size', "; 
         $insertSQL .= "fileName='$the_file_name' "; 

        echo $insertSQL; 

        //mysql_query($insertSQL); 

        //echo mysql_error(); 

       } else { 
        $messages[] = "Sorry, there was a problem uploading your file."; 
       } 
      } 
     } 
    } 
}

來源

2013-06-27 Adam Faulkner

你甚至'print_r（$ _ FILES）'看看它實際上包含什麼？我相信它是'$ _FILES ['fileselect'] [$ i] ['attribute']'not'$ _FILES ['fileselect'] ['attribute'] [$ i]' – Twisted1919

上面的所有內容：「for（$ i = 0; $ i <= $ num_files; $ i ++）{... blah} else {「，是從棧上的另一個帖子引用的，這顯然是有效的。鏈接：http://stackoverflow.com/questions/2233816/how-to-handle-multiple-file-upload-using-php 下面的一切工作。我的問題是「$ num_files = count（$ _ FILES ['fileselect'] ['tmp_name']）;」總是返回'1'。 –

我的第一個猜測是PHP'count（）'函數中沒有錯誤 – chrislondon

我創建了一個文件，內容如下，運行寧PHP版本5.5.15並正確計算：

<?php 
if(isset($_FILES['fileselect']['tmp_name'])) 
{ 
    echo "<pre>"; print_r($_FILES); echo "</pre>"; 
    echo "Number of files uploaded: " . count($_FILES['fileselect']['name']); 
} 
?> 

<form id="upload" action="files_upload.php" method="POST" enctype="multipart/form-data"> 

<fieldset> 
<legend>HTML File Upload</legend> 

<input type="hidden" id="MAX_FILE_SIZE" name="MAX_FILE_SIZE" value="300000" /> 

<div> 
    <label for="fileselect">Files to upload:</label> 
    <input type="file" id="fileselect" name="fileselect[]" multiple="multiple" /> 
    <div id="filedrag">or drop files here</div> 
</div> 

<div id="submit"> 
    <button type="submit">Upload Files</button> 
</div> 

</fieldset> 

</form>

來源

2014-10-05 08:28:00

你需要更好地解釋你的答案 – RossBille

你的代碼是在我的情況下運行，$ NUM_FILES計數後，返回真值。

一件事做刪除 '=' 從循環，這樣寫

for($i=0; $i<$num_files; $i++)

如果使用$ I < = $ NUM_FILES它給你一個通知。

假設您選擇3個文件，並且您正在設置$ i < = $ num_files。

所以for循環從0開始，當你選擇了3個文件，它延續了4次

你可以看到，繼續循環4次，但對

$_FILES['filename']['tmp_name'][3].

我希望這將有助於你沒有文件...

對不起，我英語。

來源

2014-10-05 11:11:24

PHP count（）無法正確計數

回答

相關問題