if session connected php code example

Example 1: check network connection php

$response = null;
system("ping -c 1 google.com", $response);
if($response == 0)
{
    // this means you are connected
}

Example 2: php check session status

session_status();

// Possible results:
//  - PHP_SESSION_DISABLED = 0
//  - PHP_SESSION_NONE     = 1
//  - PHP_SESSION_ACTIVE   = 2