在Debian系統上使用PHP處理文件上傳，可以遵循以下步驟：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>File Upload</title>
</head>
<body>
<form action="upload.php" method="post" enctype="multipart/form-data">
Select file to upload:
<input type="file" name="fileToUpload" id="fileToUpload">
<input type="submit" value="Upload File" name="submit">
</form>
</body>
</html>
upload.php的PHP文件，用于處理文件上傳：<?php
// 檢查是否有文件被上傳
if (isset($_FILES['fileToUpload'])) {
$target_file = "uploads/" . basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
$imageFileType = strtolower(pathinfo($target_file, PATHINFO_EXTENSION));
// 檢查文件是否為圖片
if(isset($_POST["submit"])) {
$check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
if($check !== false) {
echo "File is an image - " . $check["mime"] . ".";
$uploadOk = 1;
} else {
echo "File is not an image.";
$uploadOk = 0;
}
}
// 檢查文件是否已存在
if (file_exists($target_file)) {
echo "Sorry, file already exists.";
$uploadOk = 0;
}
// 檢查文件大小
if ($_FILES["fileToUpload"]["size"] > 500000) {
echo "Sorry, your file is too large.";
$uploadOk = 0;
}
// 允許特定文件格式
if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
&& $imageFileType != "gif" ) {
echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
$uploadOk = 0;
}
// 檢查$uploadOk是否被設置為0，如果是，則發生錯誤
if ($uploadOk == 0) {
echo "Sorry, your file was not uploaded.";
// 如果一切順利，嘗試上傳文件
} else {
if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {
echo "The file ". htmlspecialchars( basename( $_FILES["fileToUpload"]["name"])). " has been uploaded.";
} else {
echo "Sorry, there was an error uploading your file.";
}
}
}
?>
uploads的文件夾，用于存儲上傳的文件：mkdir uploads
將HTML文件和PHP文件上傳到Debian服務器上的適當目錄。
通過瀏覽器訪問HTML文件，然后嘗試上傳一個文件。如果一切正常，文件將被上傳到uploads文件夾。
注意：在實際應用中，還需要考慮更多的安全措施，例如對上傳的文件進行病毒掃描、限制上傳文件的類型和大小等。
