wordpress : insert user

insert user

<?php
/*
Plugin Name: Insert User
Plugin URI: http://example.com
Description: Plugin that inserts a user.
Version: 0.1
Author: WROX
Author URI: http://goo.com
*/
/* Insert the new user on the 'init' hook. */
add_action( 'init', 'boj_insert_user' );
/* Inserts a new user. */
function boj_insert_user() {
	/* Do nothing if the 'wrox' username exists. */
	if ( username_exists( 'wrox' ) )
		return;
	/* Set up the user data. */
	$userdata = array(
		'user_login' => 'wrox',
		'user_email' => 'wrox@example.com',
		'user_pass' => '123456789',
		'user_url' => 'http://example.com',
		'display_name' => 'Wrox',
		'description' => 'Loves to publish awesome books on WordPress!',
		'role' => 'editor'
	);
	
	// *** wp_create_user( $username, $password, $email ); **
	// This function enables you to insert the minimum arguments for creating a user, which simplifies 
	// creating users greatly. It's especially useful if you don't have any other data you want to input. 

	/* Create the user. */
	$user = wp_insert_user( $userdata );
	/* If the user wasn't created, display the error message. */
	if ( is_wp_error( $user ) )
		echo $result-> get_error_message();
}



/* Get the user data. */
function boj_display_user_website( $user_id ) {
	/* Get the user data. */
	$data = get_userdata( $user_id );
	/* Check if data was returned. */
	if ( !empty( $data ) ) {
		/* Check if a URL has been given. */
		if ( !empty( $data->user_url ) ) {
			/* Display the user display name and URL. */
			echo $data->display_name . ': ' . $data->user_url;
		}
	}
}

/* Display user welcome message in the admin footer. */
add_action( 'in_admin_footer', 'boj_user_welcome_message' );
function boj_user_welcome_message() {
	
	// The get_currentuserinfo() function is similar to the function from the next section. 
	// wp_get_current_user() actually calls it to get the user's information. The big difference between 
	// the two functions is that get_currentuserinfo() doesn't return a variable. It sets a global variable 
	// of $current_user instead.

	/* Get the current user's data. */
	$data = wp_get_current_user();
	/* Display a message for the user. */
	echo "Hello, {$data->display_name}. < br />";
}

//***************get_currentuserinfo***************
add_action( 'in_admin_footer', 'boj_display_user_registration_date' );
function boj_display_user_registration_date() {
	/* Globalize the $current_user variable. */
	global $current_user;
	/* Call the current user function. */
	get_currentuserinfo();
	/* Format user registration date. */
	$date = mysql2date( 'F j, Y', $current_user->user_registered );
	/* Display the user's registration date. */
	echo "You registered on {$date}. < br />";
}

?>