How does a web application firewall (WAF) detect and prevent attacks?

Web application firewalls (WAF) keep websites safe by blocking threats, checking incoming traffic, and creating special rules to help protect each website. WAF also helps follow security requirements like PCI-DSS.

To generate multiple barcodes in CodeIgniter, you can loop through your barcode generation code, providing the required data for each barcode, and generate multiple barcodes accordingly.

You can generate barcodes in CodeIgniter by using Zend library, follow the steps given below to generate:

• Firstly, generate a random number
• Then, load zend library
• By using factory method create instance of renderer
• Fill the necessary details required like barcode format, name, etc
• Press Enter
• Then, store the image in the barcode folder
• Load the image and use it