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php - 只允许 zip 文件上传

问题描述

我已经做了一个上传表格。但我希望用户能够上传 .zip 文件和 .rar 文件。我已经尝试过以下方法：

$ftp_server = "myserver";
$ftp_user_name = "myuser";
$ftp_user_pass = "mypass";
$source_file = $_FILES['file']['tmp_name'];
$fileType = $_FILES['file']['type'];
$fileExt = explode('.', $filename);
$fileActualExt = strtolower(end($fileExt));
$destination_folder = "/public_html/wp/wp-content/plugins/AbonneerProgrammas/FilesUpload";
$destination_file = $destination_folder . "/" . basename($_FILES['file']['name']);
$conn_id = ftp_connect($ftp_server);
// login with username and password
$login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass); 
ftp_pasv($conn_id, true); 

$allowed = array('zip', 'rar');
if(in_array($fileActualExt, $allowed)) {

//my upload code

}else {
    echo "You are not allowed to upload this file.";
}

它没有显示任何错误。它只进入 else 内部。当我上传 .zip 文件时它也会这样做，我不知道出了什么问题。

标签： php

解决方案

1.您需要使用pathinfo()来获取文件扩展名。

2.$filename在你的代码中没有定义，所以它会给你警告，并且扩展检查代码总是会失败。

修改代码如下：

$ftp_server = "myserver";
$ftp_user_name = "myuser";
$ftp_user_pass = "mypass";

$source_file = $_FILES['file']['tmp_name'];
$fileType = $_FILES['file']['type'];

/*get file extension [*/
  $fileExt = pathinfo($_FILES["file"]["name"], PATHINFO_EXTENSION);
  $fileExt = strtolower($fileExt);
/* ] */

$destination_folder = "/public_html/wp/wp-content/plugins/AbonneerProgrammas/FilesUpload";
$destination_file = $destination_folder . "/" . basename($_FILES['file']['name']);

$conn_id = ftp_connect($ftp_server);
$login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass); 
ftp_pasv($conn_id, true); 

$allowed = array('zip', 'rar');

/*use $extension variable to check allowed or not [*/
if(in_array($fileExt, $allowed)) {

//my upload code

}else {
    echo "U mag dit type bestand niet uploaden.";
}
/* ] */

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