Upload and Watermark(Text) Image using Codeigniter

This tutorial will show you how to upload an image and watermark the image using Codeigniter. The Watermarking feature requires the GD/GD2 library.
CodeIgniter’s File Uploading Class permits files to be uploaded. You can set various preferences, restricting the type and size of the files.

Uploading a file involves the following general process:

An upload form is displayed, allowing a user to select a file and upload it.
When the form is submitted, the file is uploaded to the destination you specify.
Along the way, the file is validated to make sure it is allowed to be uploaded based on the preferences you set.
Once uploaded, the user will be shown a success message.

CodeIgniter’s Image Manipulation class lets you perform the following actions:

Image Resizing
Thumbnail Creation
Image Cropping
Image Rotating
Image Watermarking

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