Support » Fixing WordPress » Get current user for plugin

  • Resolved willcowd


    Hi All

    I’m writing a custom plugin and need to get the data for the logged in user.

    However, none of the wp functions are working. I’ve tried adding in wp-blog-header.php but that created fatal errors.

    Any help would be much appreciated.

Viewing 5 replies - 1 through 5 (of 5 total)
  • When you say none of the functions are working, it would be helpful for you to provide more specific information about what functions you’re trying to use, what the result is, and including any of the fatal errors you mentioned.

    There are a number of functions available to access data about the logged in user. If you haven’t already, make sure you view these pages:

    Hi Chris

    Sorry for the lack of information.
    I am able to run functions including:

    add_action(‘media_buttons_context’, ‘add_my_custom_button’);
    add_filter( ‘mce_css’, ‘filter_mce_css’ );

    If I add in require_once( ABSPATH . ‘wp-blog-header.php’); i get

    Fatal error: Call to a member function main() on a non-object in /home/willcowd/public_html/wp-includes/functions.php on line 798

    …which I would expect.

    $user = get_currentuserinfo();
    echo $user;


    Fatal error: Call to undefined function get_currentuserinfo() in /home/willcowd/public_html/wp-content/mu-plugins/custom-functions.php on line 16

    I hope this explains it.

    It looks like this person had a similar issue:

    and that the solution was requiring ‘pluggable.php’ before calling get_currentuserinfo. That’s consistent with which says the function is defined there.

    I am not entirely sure that this is the best or even appropriate way to accomplish what you need, but you might try loading the pluggable.php function before calling the user info function. You should also wrap your call to get_currentuserinfo with if ( !function_exists() ) to avoid fatal errors.

    That is a step forward, but I’m getting:

    WP_User Object ( [data] => [ID] => 0 [caps] => Array ( ) [cap_key] => [roles] => Array ( ) [allcaps] => Array ( ) [filter] => )


    require (ABSPATH . WPINC . '/pluggable.php');
    	if ( !function_exists('wp_get_current_user') ){
    		echo 'Function not set';
    		function wp_get_current_user() {
    			global $current_user;
    			return $current_user;

    Found the answer!!

    I was running things in the wrong order. In the end, this function worked:

    function get_user(){
    		global $current_user;
    	add_action( 'admin_head', 'get_user' );

    This makes sure things are done in the correct order.

    Thanks Chris for your help

Viewing 5 replies - 1 through 5 (of 5 total)
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