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get_current_user_id() WP 3.0.0

Get the current user's ID.

Works based on: wp_get_current_user()

✈ 1 time = 0.000012s = very fast | 50000 times = 0.01s = speed of light | PHP 7.1.2, WP 4.7.4

No Hooks.

Return

Int. The current user's ID, or 0 if no user is logged in.

Usage

get_current_user_id();

Examples

#1 Get current user ID for further processing

$cur_user_id = get_current_user_id();
echo $cur_user_id; //> 5

Changelog

Since 3.0.0

Introduced.

Code of get current user id: `wp-includes/user.php` ^{WP 5.4.1}

<?php
function get_current_user_id() {
	if ( ! function_exists( 'wp_get_current_user' ) ) {
		return 0;
	}
	$user = wp_get_current_user();
	return ( isset( $user->ID ) ? (int) $user->ID : 0 );
}

Related Functions

From tag: Users (_user)

More from category: Other

vladlu 100 — vlad.lu

Editors: kama 100

vladlu and kama30 Jun 2019 . 25 Jul 2018 4 comments RU

4 comments

shk_user1
I'm doing prohrammatic login using
```
function programmatic_login( $username ) {
	if ( is_user_logged_in() ) {
		wp_logout();
	}

	add_filter( 'authenticate', 'allow_programmatic_login', 10, 3 );    // hook in earlier than other callbacks to short-circuit them
	$user = wp_signon( array( 'user_login' => $username ) );
	remove_filter( 'authenticate', 'allow_programmatic_login', 10, 3 );

	if ( is_a( $user, 'WP_User' ) ) {
		wp_set_current_user( $user->ID, $user->user_login );

		if ( is_user_logged_in() ) {
			return true;
		}
	}

	return false;
}
```
when I check current user details on the same page it is providing me the correct details "BUT" when I using get_current_user_id() function on another page it is giving me zero. Any help would means a lot.
1

Reply11.Aug.2018 10:30 #
- kama100
  
  What does prohrammatic login mean? What allow_programmatic_login function code is? There are so many questions to answer your question - it's not clear
  
  Reply11.Aug.2018 21:43 #
  - shk_user1
    
    Hello Kama it's really fortunate that you have replied. I have made a custom registration and login page in for my wordpress site. So after a successful login I'm trying to set my current user details in session via wp_set_current_user() on my login page so that I can access it at any page I want . When I'm using above code I get the details on the same page where I'm setting these values but whenever I redirect to any other page on my website get_current_user_id() function returns zero which all that session data is lost. If you could suggest any technique using which I could retrieve these details would really help me alot.
    
    Reply13.Aug.2018 15:55 #
    - kama100
      
      Do you use default WordPress logic for authentication?
      
      It seems you need to set authentication cookies after user login and password have been cheked. Use wp_set_auth_cookie() function to do it. Without setting such cookies - it is equivalent to the fact that the user is not logged.
      
      Reply14.Aug.2018 09:29 #