Check if user is logged in (PHP)

By jsethi on 6 Sep 2007 at 03:16 UTC

How do I check if a user is logged in or not using php

Looking for an If/Else statement so I can display one link if a user is logged in and another if they arent.

Thanks so much,
Jay

Comments

Solved

jsethi commented 6 September 2007 at 03:20

Oh figured it out!


global $user;
if ($user->uid) {
    Print "This message is only visible for logged-in users.";
} 
if (!$user->uid) {
    Print "This message is only visible for not-logged-in users.";
}

thank you for posting

ravenite@gmail.com commented 12 November 2008 at 17:54

thank you for posting this... found it 1+ year after you posted.

Thanks for this!

anthonybruno commented 17 April 2009 at 19:31

Real simple!

Cheers!

Thanks for this! Simple

Webbeh

he/him/his

Georgia, USA

commented 9 February 2011 at 16:21

Thanks for this! Simple solution to someone starting out seeing how PHP is integrated with Drupal.

I would STRONGLY advise

jyuza commented 27 July 2011 at 07:22

I would STRONGLY advise against the global $user.
Prefer rather $GLOBALS['user'] instead, it is much more secure.

You might want to throw up an

SWMdave commented 2 August 2011 at 16:39

You might want to throw up an example snippet.

<?php if

jyuza commented 4 August 2011 at 10:26

 	if ($GLOBALS['user']->uid==0 || in_array('somerole', $GLOBALS['user']->roles)) { 
	   drupal_access_denied(); 
	   exit();
	}

This way, only authenticated users can access whatever you want them to with a secure variable.

Imagine some developer wants to alter your own code (where you already set $user).
The dude is going to add his own code below and, like you already did, he is going to need the $user object and (like you did!) call the bastard $user. And BOOM, the man got access to all of the previous $user rights and permissions...

$GLOBALS - "much more secure"? Why?

Sk8erPeter commented 14 December 2011 at 21:52

Why would $GLOBALS['user'] be

"much more secure"

than using global $user?

global $user vs $GLOBALS['user']

Uncle_Code_Monkey commented 30 October 2012 at 19:01

By definition, using "global $user" is equivalent to $GLOBALS['user'] since they both point to the same memory space. Updating one will update the other at the same time. See http://php.net/manual/en/reserved.variables.globals.php

If I had to recommend one over the other, I would highly recommend "global $user" as it has better readability. Besides that, PHP 5.4 is making changes to how the $GLOBALS[] array behaves and I suspect this is just the start of such changes. I would not be surprised to see the array deprecated at some point.

The simplest way is to use user_is_logged_in() function!

Sk8erPeter commented 14 December 2011 at 21:51

The simplest way is to use user_is_logged_in() function!

Use it like so

jasonflaherty commented 21 August 2014 at 15:13

if(user_is_logged_in()){ print "Logged In"; }

The call is here

pal4life commented 29 October 2014 at 17:48

https://api.drupal.org/api/drupal/modules%21user%21user.module/function/...