Use of undefined constant

@Sinnbeck $url = 'https://www.linkedin.com/oauth/v2/authorization?response_type=code&client_id='.CLIENT_ID.'&redirect_uri='.REDIRECT_URL.'&scope='.SCOPES. '&state='.$state ;

@SagarAhmad so you have CLIENT_ID there (along with others). Where do you set that?

@SagarAhmad hard to give a solution when I don't know your code. Show that line of that file

@SagarAhmad is that defined inside the same file or another file? This does not seem to be laravel?

@Sinnbeck it is php

@SagarAhmad yes I can see that. So no framework?

is that defined inside the same file or another file?

@Sinnbeck you work in laravel only?

@Sinnbeck no framework just this project is core php based

@SagarAhmad no I work with plain php as well :) but to help you I need to know more. It seems that you might be setting the consts in a seperate file, but aren't loading that file in pjob-social-share.php

@Sinnbeck Yes,you say correct

@Sinnbeck ok good I'm use seprate file for consts and load this file another file

@SagarAhmad are you using composer for autoloading or do you just require files as needed?

Try requiring the consts file at the top of the file with the error

require './path/to/consts.php';

@Sinnbeck yes i'm use composer autoload files

@Sinnbeck i'm use Composer With Guzzle Library

@SagarAhmad oh ok. I think you need to show some more. I am working completely in the blind here. As this isn't using a framework, I have no knowledge the structure or how you are autoloading. All I can say is that your defines does not seem to be loaded

Is the project public on github perhaps?

@Sinnbeck no

@SagarAhmad ok. Can you give anything to go by? There is no way I can guess the problem based on the error alone. I have already told you what I think is causing it, but without knowing your project it's mostly impossible to help fix :(