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I need to generate a unique ID number for each new member. I was going to use WP_query, but am not getting anything but an array.

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I am unsure what you are trying to achieve. Are you trying to generate a user ID or are you trying to display the user ID? If you are generating a new user ID why not just use the one WP assigns? –  imHavoc Dec 10 '11 at 4:51
    
That's what I will probably do, I just don't know how to add it to a members information, ie. username, email, ID –  jerry Dec 18 '11 at 6:16
    
I am still unsure of what you want to do, but it seems that you want to add information to a user. Can you please be more specific? –  imHavoc Dec 18 '11 at 18:43
    
I want to grab the user id, and have it print out with the rest of the user profile stuff. –  jerry Jan 3 '12 at 22:52
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1 Answer

If you want to display the info on the current user logged in you can use get_currentuserinfo. [Codex]

Example from Codex

<?php global $current_user;
      get_currentuserinfo();

      echo 'Username: ' . $current_user->user_login . "\n";
      echo 'User email: ' . $current_user->user_email . "\n";
      echo 'User first name: ' . $current_user->user_firstname . "\n";
      echo 'User last name: ' . $current_user->user_lastname . "\n";
      echo 'User display name: ' . $current_user->display_name . "\n";
      echo 'User ID: ' . $current_user->ID . "\n";
?>

Or if you want display the info for a user that is not the current user logged in, you can use get_userdata. [Codex]

The two links to the WP Codex should provide you with the syntax of the two functions. If you have any further questions or they did not work please ask.

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Thanks! Hey, just a quick question, would you say this is the best way to create a unique number for a member? I was going to use rand(1,0000000) but it is random, and keeps changing. I came to the conclusion that the user ID is really the best way to make sure each users number is unique. Sound safe? –  jerry Jan 5 '12 at 18:29
    
The User ID will always be unique because it auto increments in the database and the column is set to unique, so you should be fine. –  imHavoc Jan 5 '12 at 18:59
    
How can I do this? I cannot seem to get it to echo out in each members profile area? –  jerry Jan 5 '12 at 23:22
    
What is the code you are using? –  imHavoc Jan 6 '12 at 1:36
    
' <?php $user_number = get_userdata( $userid ); ?> <span>My User Number is: <?php echo $user_number; ?> <br /> ' –  jerry Jan 6 '12 at 16:54
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