File Upload Using PHP With Javascript | Secure HTML Form Upload - Ep2
Welcome to Part 2 of our simple file upload tutorial using HTML, JavaScript, and PHP. In this video, we dive into the server-side validation using PHP to safely handle user-submitted files. After validating form data on the client side in Part 1, we now ensure security and integrity on the backend before moving files to the upload directory.
This tutorial covers:
Validating file extensions using PHP
Checking file size to enforce upload limits
Preventing malicious file uploads
Sanitizing file names
Moving files to a secure server folder using move_uploaded_file()
Testing the complete upload system locally
This is perfect for beginners in PHP, or developers building a secure upload system that works both locally and on remote servers. If you're managing uploads like documents, images, or other user files, this tutorial will help you implement best practices without frameworks.
📂 Chapters:
00:00 - Introduction to Server-Side File Upload with PHP
00:28 - Recap of Client-Side Validation (Part 1)
00:55 - The process_upload.php Script Explained
01:25 - Targeting and Validating Input Fields (Email, File, Select)
01:50 - Creating Allowed File Extensions Array
02:20 - Using explode() and in_array() for Extension Checks
02:55 - Validating File Size with PHP
03:30 - Displaying Custom Error Messages
03:50 - Sanitizing File Names with preg_replace()
04:08 - Recap and Next Steps: Adding a Progress Bar
💡 Next Video: Learn how to add a progress bar to the file upload system using AJAX and JavaScript for a better user experience!
Tags:
#PHPFileUpload #JavaScriptFormValidation #SecureFileUpload #PHPTutorial #WebDevelopment #FileUploadSystem #ServerSideValidation #move_uploaded_file