FTP upload file operation php class

08 Nov 2025

Using the Android device's file path directly in PHP results in a "No such file or directory" error when an Android app attempts to upload a local file to an FTP server via a PHP script. This is because the server cannot directly access the files on the client device. The correct approach is that the Android application needs to send the file content to the PHP server as part of the HTTP POST request. After the PHP script receives the file, it then transfers the file to the FTP server from its server's temporary storage location.

10 Nov 2025

This tutorial aims to solve how to implement independent image preview and status text update for each file input box in a multi-file upload scenario. By correcting the misuse of IDs in HTML and using JavaScript's class selector and iteration methods, we ensure that each upload component can independently and correctly display the preview of the selected image and update its upload status to avoid cross-influence of content, thereby building a fully functional and user-friendly multi-file upload interface.

19 Feb 2026

This article details how to use JavaScript's File constructor combined with the Axios library to simulate a large file upload request without actually selecting the file. By creating virtual file data and encapsulating it into a FormData object, developers can efficiently test the file size limit and upload logic of the backend, especially suitable for automated testing and CI/CD environments, thus avoiding the complexity of handling real large files in testing.

12 Jan 2026

Regarding the FileDetails class in Java, when multiple file records have the same file name but different upload dates, this article explores how to use the Java Stream API to efficiently filter out the latest upload details records for each unique file name from the collection, avoiding misunderstandings that the equals and hashCode methods may bring when processing versioned data.

13 Dec 2025

This tutorial aims to solve the common problem of req.files (or req.file) showing as undefined when using the Node.js Multer library to handle HTML form file uploads. The article will delve into the file upload mechanism, focusing on the importance of the enctype="multipart/form-data" attribute in the HTML tag, and provide complete code examples and configuration guides to ensure the normal operation of the file upload function.

21 Nov 2025

First install the maatwebsite/excel package, then create an import class and define data mapping, handle file upload in the controller and call the Excel::import method to complete the import.