wordpress data in codeigniter project

hey everyone ,
 
i have been given a task which i have to submit it by monday .

since i m a newbie i dont have much coding concepts in codeigniter so if guys wanna help me in completing this task just xtend a helping hand

task is i m having wordpress blog and codeigniter blog, i have to fetch posts from wordpress blog into codeigniter blog .so if anyone know please help me out here .
i have installes oauth2 and wp rest api v2 plugin in my wordpress blog and generated a client id and secret key till here its done after this wat i have to plz suggest me..i have got hthe code from github too