我有一个表单，除了文件上传之外，我保留了对其他输入类型的验证，但是如果我不选择任何文件，那么我的脚本会在上传表中添加一个空。有什么方法可以检查用户是否正在上传任何文件，如果有文件，那么我可以运行我的上传脚本...这是脚本
if (isset($_FILES['fileupload'])) {
$errors = array();
$connection = db::factory('mysql');
$user_id = $_SESSION['userid'];
foreach ($_FILES['fileupload']['tmp_name'] as $key => $tmp_name) {
$file_name = $_FILES['fileupload']['name'][$key];
$file_size = $_FILES['fileupload']['size'][$key];
$file_tmp = $_FILES['fileupload']['tmp_name'][$key];
$file_type = $_FILES['fileupload']['type'][$key];
if ($file_size > 2097152) {
$errors[] = 'File size must be less than 2 MB';
}
$upload_dir = ROOT;
$desired_dir = ROOT . "/uploads/";
if (empty($errors) == true) {
if (is_dir(ROOT . "/uploads/") == false) {
mkdir(ROOT . "/uploads/", 0700);
}
if (is_dir(ROOT . "/uploads/" . $file_name) == false && !file_exists(ROOT . "/uploads/" . $file_name)) {
$file_path = ROOT . "/uploads/" . $file_name;
move_uploaded_file($file_tmp, $file_path);
$full_path = mysql_real_escape_string($file_path);
$query = "INSERT INTO uploads (`User_Id`,`File_Name`,`File_Path`,`File_Size`,`File_Type`) VALUES('$user_id','$file_name','$full_path','$file_size','$file_type'); ";
mysql_query($query);
} else {
$new_path = ROOT . "/uploads/" . time() . "_" . $file_name;
rename($file_tmp, $new_path);
$file_path = $new_path;
$full_path = mysql_real_escape_string($file_path);
$query = "INSERT INTO uploads (`User_Id`,`File_Name`,`File_Path`,`File_Size`,`File_Type`) VALUES('$user_id','$file_name','$full_path','$file_size','$file_type'); ";
mysql_query($query);
}
} else {
print_r($errors);
}
}
if (empty($error)) {
//echo "Success"; exit;
return true;
}
return false;
最佳答案
如果我没记错的话，文件上传字段将在 $_FILES 中创建一个条目，无论它是否为空。在这种情况下，您最好检查 $_FILES['fileupload']['size'][$key] 是否大于零或 $_FILES[' fileupload']['name'][$key] 不为空。
这应该为您表单上上传的每个文件提供答案(即使您有很多文件。)
关于当文件上传为空时，PHP在mysql表中插入空行，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/18014884/