Method for Codeigniter to verify IP address

This article describes the method of Codeigniter verifying IP address. Share it for your reference. The specific analysis is as follows:

Here we demonstrate how Codeigniter can obtain the user's IP address and verify the validity of the IP address.

Get user ip:

$this->input->ip_address();
//If the ip acquisition fails, it will return 0.0.0.0.0. We can also use the following code to verify the validity of ip$ip = "192.168.1.1";
if (!$this->input->valid_ip($ip))
{
 echo " Not a valid IP address" ;
}
else
{
 echo " Valid IP address! " ;
}

I hope that the description in this article will be helpful to everyone's PHP programming based on Codeigniter.