How to Upload Image and File in Codeigniter 4 with Validation. uploaded image in Codeigniter 4 with validations. Create a form with input of file. Submit the form and set the validation rules in the Controller. Without proper validation, file upload is not secure for SQL injection.
When you want to upload image in Codeigniter 4, you have to take care of the validation. Without proper validation, file upload is not secure for SQL injection. Someone might do the SQL injection with the file upload. Hence, it is very important to prevent code injection through the file upload. In Codeigniter, you can validate the image or file before uploading it. You can check the mime type, size, file extension, etc. These are the property of the file. So, by using these properties, you can validate the file properly. After the validation, the image will be moved to the specified directory. Also, we will save the filename into the database. In this post, I will show you how you can upload image in Codeigniter 4 from very scratch. So, let’s begin by creating a new project.
If you are going to create a new project in Codeigniter 4 the you must install the below tools.
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In this tutorial, I show how you can upload an image and other types of file with validation and display preview in CodeIgniter 4.