Roy Tutorials

Introduction This tutorial will show you how to prevent SQL injection in Codeigniter application. It is very important to escape the variable you pass to the database query because, in web application security, SQL injections play an important role. SQL injection is: a malicious code injection technique that may destroy your database. one of the most common web hacking techniques….

Introduction This tutorial will show you how to upload and play video using Codeigniter. The uploaded video may or may not start playing automatically. CodeIgniter’s File Uploading Class permits files to be uploaded. You can set various preferences, restricting the type and size of the files.

Introduction This tutorial will show you how to generate captcha image using Codeigniter Captcha Helper and store captcha characters into database. We have seen how to generate and use captcha in CodeIgniter earlier. The CAPTCHA Helper file contains functions that assist in creating CAPTCHA images.

Introduction This tutorial will show you how to generate captcha image using Codeigniter Captcha Helper. We will also see how to use captcha using CodeIgniter framework. Captcha helps to prevent automatic submission of forms on the web pages. Captcha would not have been there then some users would have filled your site with spams. Here we will build a simple…

Introduction This tutorial will show you how to upload and watermark image using Codeigniter. CodeIgniter’s File Uploading Class permits files to be uploaded. Codeigniter’s Image Library class allows us to process images, such as, crop, resize, rotate, watermark etc. You can set various preferences, restricting the type and size of the files. So here we will upload the image first…

Introduction This tutorial will show you how to upload and watermark image using Codeigniter. CodeIgniter’s File Uploading Class permits files to be uploaded. Codeigniter’s Image Library class allows us to process images, such as, crop, resize, rotate, watermark etc. You can set various preferences, restricting the type and size of the files. So here we will upload the image first…

Introduction This tutorial will show you how to upload and rotate image using Codeigniter. CodeIgniter’s File Uploading Class permits files to be uploaded. Codeigniter’s Image Library class allows us to process images, such as, crop, resize, rotate, watermark etc. You can set various preferences, restricting the type and size of the files. So here we will upload the image first…

This tutorial will show you how to upload and crop image using Codeigniter. CodeIgniter’s File Uploading Class permits files to be uploaded. Codeigniter’s Image Library class allows us to process images, such as, crop, resize, rotate, watermark etc. You can set various preferences, restricting the type and size of the files. So here we will upload the image first and…

Introduction This tutorial will show you how to upload and resize image using Codeigniter. CodeIgniter’s File Uploading Class permits files to be uploaded. Codeigniter’s Image Library class allows us to process images, such as, crop, resize, rotate, watermark etc. You can set various preferences, restricting the type and size of the files. So here we will upload the image first…

This tutorial will show you how to create dependent or cascaded dynamic dropdown using jQuery. Sometimes you need to create such a cascaded dropdown where you need to select some value in the second dropdown based on first dropdown value. For example, you may need to select city dropdown value based on country dropdown value and for this you cannot…