Import users once a day without a plugin

Question

I need to import users to my WP database once a day. So I have a script that runs once a day to do an action. The problem that I'm having is that I'm a little over my head on this one.

Another company provides me with userdata in a .csv file. I then need to import this file to my WP database.

The script I use for running once a day is the following (this is in my functions.php):

add_action( 'wp', 'prefix_setup_schedule' );
/**
* On an early action hook, check if the hook is scheduled - if not, schedule it.
*/
function prefix_setup_schedule() {
    if ( ! wp_next_scheduled( 'prefix_hourly_event' ) ) {
        wp_schedule_event( time(), 'hourly', 'prefix_hourly_event');
    }
}


add_action( 'prefix_hourly_event', 'prefix_do_this_hourly' );
/**
* On the scheduled action hook, run a function.
*/
function prefix_do_this_hourly() {
    wp_mail( '[email protected]', 'Automatic email sent at '.time(), 'Automatic scheduled email from WordPress.');
}

On the server runs a cronjob that activates wp-cron.php once a day. If there aren't any users the script won't run so I activate it. Once there is activity it runs.

This is a simple working example of an email that is sent every hour. Now I need to import users.

Here is what I found:

LOAD DATA INFILE 'path/to/file/users.csv'
INTO TABLE discounts
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'
IGNORE 1 ROWS;

I don't know if this works I'm not there yet. The problem I'm facing now it that the usersystem of WordPres exists of two tables wp_user and wp_usermeta.

Can anybody tell me if I'm even on the right track and how to solve this. Is there maybe a way to seperate the .csv file and select what to import where including the fact that there is a refference between the user and usermeta tables?

M.

I changed my way of thinking and want to do the following:

$row = 1;
ini_set('auto_detect_line_endings',TRUE);
if (($handle = fopen(get_bloginfo('template_directory')."/import_test.csv", "r")) !== FALSE) {
    while (($data = fgetcsv($handle, 1000, ";")) !== FALSE) {
    $num = count($data);
    echo "<p> $num fields in line $row: <br /></p>\n";
    $row++;
    for ($c=0; $c < $num; $c++) {
        echo $data[$c] . "<br />\n";
    }
    }
    fclose($handle);
}

This is a direct copy from http://php.net/fgetcsv.
Now I want to replace the for loop with an wp_create_user function to add the user.
At the same time I need to add user_meta to that user (I think). Any ideas how I can add a user with metafields and select the right values from my csv file matching the vars?

• EDIT -
  I have come so far but I can't get the last part to work. I have the adding of a new user fixed.
  The foreach loops through the csv to add all users:

  $filepath = get_bloginfo('template_directory')."/import_test.csv";
  ini_set('auto_detect_line_endings',TRUE);
  $file = fopen($filepath, "r") or die("Error opening file");
  $i = 0;
  
  while(($line = fgetcsv($file, 1000, ";")) !== FALSE) {
      if($i == 0) {
      $c = 0;
      foreach($line as $col) {
          $cols[$c] = $col;
          $c++;
      }
  } else if($i > 0) {
  $c = 0;
      foreach($line as $col) {
          $data[$i][$cols[$c]] = $col;
          $c++;
      }
  }
  $i++;
  

  }

  foreach ($data as $gebruiker){
      $username = $gebruiker['username'];
      if ( username_exists( $username ) ){
          $user = get_user_by( 'login', $username);
          update_user_meta( $user->ID, 'meta_key', $gebruiker['email'] );
      }
      else{
          $users = wp_insert_user(
              array(
              'user_login'    =>  $gebruiker['username'],
              'user_pass'     =>  $gebruiker['password'],
              'first_name'    =>  $gebruiker['first_name'],
              'last_name'     =>  $gebruiker['last_name'],
              'user_email'    =>  $gebruiker['email'],
              'display_name'  =>  $gebruiker['first_name'] . ' ' . $gebruiker['last_name'],
              'nickname'      =>  $gebruiker['first_name'] . '' . $gebruiker['last_name'],
              'role'          =>  'subscriber'
              )                       
          );
          foreach ($data as $update_user) {   
              update_user_meta( $users, 'import_1', $update_user['first_name'] );
              update_user_meta( $users, 'import_2', $update_user['last_name'] );
          }
      }
  }
  

To add files to the wp_usermeta table I want to work with update_user_meta since the wp_insert_user comes back with an ID of the just created user.

But no matter where I place the update_user_meta in the loop it gives me back the following error: Fatal error: Cannot use object of type WP_Error as array in
The error is fixed. Because the users allready existed. So need to check for that later. This does mean that the fields are added to the usermeta but empty

====== EDIT ======
The above code is final and working...

Answer 1

You can use wp_create_user and pass necessary information like $username, $password, $email , where $email is optional.

If user created successfully it will return ID of newly created user, other wise will return error object.

Then update user's other information using update_user_meta.

Answer 2

You can make use of CSV importer/exporter libraries to extract the CSV file data and save them as user details. FYI - always use wordpress functions to save anything. for ex. update_user_meta etc.

Cron you are using is correct and should run properly.

Library for extracting CSV data : goodby

EDIT:

try adding a error handling in your code:

//On success if( !is_wp_error($user) ) { echo "User created : ". $user; // update your meta here }