Answers for "What is a session in Laravel? and why use it?"

laravel session

/** 
 * Static method
 */
Session::put('key', $value);	// Set session variable
Session::get('key')				// Get session variable

/**
 * Instance method
 */
session(['key' => $value]);		// Set session variable
session('key');					// Get session variable

set session in laravel

Session::put('variableName', $value);

session in laravel

session()->regenerate();