ManageWP snippet: Finds WP user with specific username and updates their password using wp_insert_user to bypass user notification email

wp-update-user.php

/**
 * Gets all users, if username is my_username, updates password with the provided.
 */
function get_users_and_update_info() {
	// Build our args for get_users, search for my_username.
	$args = array(
		'search'       => 'my_username',
	);

	// If multisite, search in the current blog ID (which should be the primary site).
	if ( is_multisite() ) {
		$args = array_merge( $args,
			array(
				'blog_id' => $GLOBALS['blog_id'],
			)
		);
	}

	// Find that user.
	$users = get_users( $args );

	// Loop through the returned array of WP_User objects.
	// If login matches my_username, update the password with wp_insert_user
	foreach ( $users as $user ) {
		if ( 'my_username' === $user->user_login ) {
			// Set the new password here.
			$new_password = 'bloomin-onion';

			// Build the user data array. Hash the password.
			$userdata = array(
				'ID'         => $user->ID,
				'user_pass'  => md5( $new_password ),
				'user_login' => $user->user_login,
				// Uncomment below to also update email address.
				// 'user_email' => 'me@me.com',
			);

			// Use wp_insert_user to bypass sending of user notification emails.
			$user_id = wp_insert_user( $userdata );

			// If it's not an error, update was successful.
			if ( ! is_wp_error( $user_id ) ) {
				echo 'user (ID: ' . $user_id . ') updated successfully.';
			} else {
				echo $user_id->get_error_message();
			}
			return;
		}
	}

}

get_users_and_update_info();