Custom function for user register in wp?

2 comments

1. Yes you can but you need to include registration.php for validation something like:

   //Need registration.php for data validation
   require_once( ABSPATH . WPINC . '/registration.php');
   $firstname = sanitize_text_field( $form_data['firstname'] );
   $lastname = sanitize_text_field( $form_data['lastname'] );
   $username = sanitize_text_field( $form_data['username'] );
   $email = sanitize_text_field( $form_data['email'] );
   //Add usernames we don't want used
   $invalid_usernames = array( 'admin' );
   //Do username validation
   $username = sanitize_user( $username );
   if ( !validate_username( $username ) || in_array( $username, $invalid_usernames ) ) {
       echo 'Username is invalid.';
   }
   if ( username_exists( $username ) ) {
       echo 'Username already exists.';
   }
   //Do e-mail address validation
   if ( !is_email( $email ) ) {
       echo 'E-mail address is invalid.';
   }
   if (email_exists($email)) {
       echo 'E-mail address is already in use.';
   }
   //Everything has been validated, proceed with creating the user
   //Create the user
   $user_pass = wp_generate_password();
   $user = array(
       'user_login' => $username,
       'user_pass' => $user_pass,
       'first_name' => $firstname,
       'last_name' => $lastname,
       'user_email' => $email
       );
   $user_id = wp_insert_user( $user );
   
   /*Send e-mail to admin and new user - 
   You could create your own e-mail instead of using this function*/
   wp_new_user_notification( $user_id, $user_pass );
   

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