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Debian PHP如何實現文件上傳

小樊
49
2025-07-06 01:35:08
欄目: 編程語言

在Debian系統上使用PHP實現文件上傳,你需要遵循以下步驟:

  1. 創建一個HTML表單,用于選擇和上傳文件:
<!DOCTYPE html>
<html>
<head>
    <title>File Upload</title>
</head>
<body>

<form action="upload.php" method="post" enctype="multipart/form-data">
  Select image to upload:
  <input type="file" name="fileToUpload" id="fileToUpload">
  <input type="submit" value="Upload Image" name="submit">
</form>

</body>
</html>
  1. 創建一個名為upload.php的PHP文件,用于處理文件上傳:
<?php
$target_dir = "uploads/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));
$uploadOk = 1;

// Check if image file is an actual image or fake image
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;
    }
}

// Check if file already exists
if (file_exists($target_file)) {
    echo "Sorry, file already exists.";
    $uploadOk = 0;
}

// Check file size
if ($_FILES["fileToUpload"]["size"] > 500000) {
    echo "Sorry, your file is too large.";
    $uploadOk = 0;
}

// Allow certain file formats
if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
&& $imageFileType != "gif" ) {
    echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
    $uploadOk = 0;
}

// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) {
    echo "Sorry, your file was not uploaded.";
// if everything is ok, try to upload file
} 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.";
    }
}
?>
  1. 確保你的Debian系統已經安裝了PHP。如果沒有,請使用以下命令安裝:
sudo apt-get update
sudo apt-get install php
  1. 安裝PHP的文件上傳模塊(如果尚未安裝):
sudo apt-get install php-common
sudo apt-get install php-cli
sudo apt-get install php-fpm
  1. 重啟PHP-FPM服務以應用更改:
sudo systemctl restart php-fpm
  1. 創建一個名為uploads的目錄,用于存儲上傳的文件:
mkdir uploads
  1. 將HTML文件保存為index.html,并將其放在Web服務器的根目錄中(例如/var/www/html)。

  2. 使用瀏覽器訪問http://your_server_ip/index.html,然后嘗試上傳一個文件。如果一切正常,文件將被上傳到uploads目錄。

注意:在實際部署中,請確保對上傳的文件進行適當的驗證和安全檢查,以防止潛在的安全風險。

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