PHP文件上傳

Question

如果我想改變我的文件名，然後去永久位置的服務器，而不是它的臨時位置我怎麼能這樣做。

的代碼如下：

<form action="upload_file.php" method="post" 
enctype="multipart/form-data"> 
<label for="file">Filename:</label> 
<input type="file" name="file" id="file" /> 
<br /> 
<input type="submit" name="submit" value="Submit" /> 
</form> 


<?php 
if ((($_FILES["file"]["type"] == "image/gif") 
|| ($_FILES["file"]["type"] == "image/jpeg") 
|| ($_FILES["file"]["type"] == "image/pjpeg")) 
&& ($_FILES["file"]["size"] < 20000)) 
    { 
    if ($_FILES["file"]["error"] > 0) 
    { 
    echo "Return Code: " . $_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 "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />"; 

    if (file_exists("upload/" . $_FILES["file"]["name"])) 
     { 
     echo $_FILES["file"]["name"] . " already exists. "; 
     } 
    else 
     { 
     move_uploaded_file($_FILES["file"]["tmp_name"], 
     "upload/" . $_FILES["file"]["name"]); 
     echo "Stored in: " . "upload/" . $_FILES["file"]["name"]; 
     } 
    } 
    } 
else 
    { 
    echo "Invalid file"; 
    } 
?> 

Answer 1

我不確定我是否明白你的意思。如果你只是想將其重命名中的「上傳」目錄中存儲文件時，可能會使用move_uploaded_file()時：

$destination = "upload/" . $new_filename; 
if (file_exists($destination)) { 
    echo 'File ', $destination, ' already exists!'; 
} else { 
    move_uploaded_file($temp_filename, $destination); 
} 

你也可以讓用戶通過提供一個額外的「重命名」文本字段定義$new_filename您HTML表單。

---

編輯：代碼可能是類似的東西：

形式：

<form action="upload_file.php" method="post" 
    enctype="multipart/form-data"> 
<label for="file">Filename:</label> 
<input type="file" name="file" id="file" /> 
<br /> 

<!-- NEW TEXTBOX --> 
<label for="newname">Rename to (optional):</label> 
<input type="text" name="newname" id="newname" /> 
<br /> 

<input type="submit" name="submit" value="Submit" /> 
</form> 

PHP：

$upload_dir = realpath('upload') . DIRECTORY_SEPARATOR; 
$file_info = $_FILES['file']; 

// Check if the user requested to rename the uploaded file 
if (!empty($_POST['newname'])) { 
    $new_filename = $_POST['newname']; 
} else { 
    $new_filename = $file_info['name']; 
} 

// Make sure that the file name is valid. 
if (strpos($new_filename, '/') !== false || strpos($new_filename, '\\') !== false) { 
    // We *have* to make sure that the user cannot save the file outside 
    // of $upload_dir, so we don't allow slashes. 
    // ATTENTION: You should do more serious checks here! 
    die("Invalid filename"); 
} 

$destination = $upload_dir . $new_filename; 
// ... if (file_exists(... move_uploaded_file(... 

Answer 2

你這樣做的move_uploaded_file功能

move_uploaded_file($temporary_file, "path/to/destination/and/new_file_name.gif"); 

現在，你只需將它移動到目的地，這是現在的名稱。

Answer 3

//form submit in database and file store in the documents folder 

$target_dir = "assets/documents/"; 

$target_file = $target_dir . basename($_FILES["imageUpload"]["name"]); 

$uploadOk = 1; 

$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION); 

if (move_uploaded_file($_FILES["imageUpload"]["tmp_name"], $target_file)) { 

} 

$images = basename($_FILES["imageUpload"]["name"],""); 

Answer 4

public static function uploadFile($filepath="upload",$uniq=0){ 
    global $_FILES; 
    try { 
     // Undefined | Multiple Files | $_FILES Corruption Attack 
     // If this request falls under any of them, treat it invalid. 
     if (
      !isset($_FILES['uploaded_file']['error']) || 
      is_array($_FILES['uploaded_file']['error']) 
     ) { 
      $result["status"]="fail";$result["errors"]=('Invalid parameters.');return $result; 
     } 


     // Check $_FILES['uploaded_file']['error'] value. 
     switch ($_FILES['uploaded_file']['error']) { 
      case UPLOAD_ERR_OK: 
       break; 
      case UPLOAD_ERR_NO_FILE: 
       $result["status"]="fail";$result["errors"]=('No file sent.');return $result; 
      case UPLOAD_ERR_INI_SIZE: 
      case UPLOAD_ERR_FORM_SIZE: 
       $result["status"]="fail";$result["errors"]=('Exceeded filesize limit.');return $result; 
      default: 
       $result["status"]="fail";$result["errors"]=('Unknown errors.');return $result; 
     } 

     // You should also check filesize here. 
     if ($_FILES['uploaded_file']['size'] > 1000000) { 
      $result["status"]="fail";$result["errors"]=('Exceeded filesize limit.');return $result; 
     } 

     // DO NOT TRUST $_FILES['uploaded_file']['mime'] VALUE !! 
     // Check MIME Type by yourself. 
     $finfo = new finfo(FILEINFO_MIME_TYPE); 
     if (false === $ext = array_search(
      $finfo->file($_FILES['uploaded_file']['tmp_name']), 
      array(
       'jpg' => 'image/jpeg', 
       'png' => 'image/png', 
       'gif' => 'image/gif', 
      ), 
      true 
     )) { 
      $result["status"]="fail";$result["errors"]=('Invalid file format.');return $result; 
     } 
     if($uniq==0){ 
      $temp=$filepath; 
     } 
     else{ 
      $temp=$filepath."/".uniqid()."_".$_FILES['uploaded_file']['name']; 
     } 
     if(@copy($_FILES['uploaded_file']['tmp_name'], $temp)) { 
      return $result["status"]="success"; 
     } 
     $result["status"]="fail";$result["errors"]=('Unknown errors.');return $result; 

    } catch (Exception $e) { 

      $result["status"]="fail";$result["errors"]= $e->getMessage();return $result; 

    } 
}