WordPress.org

Filters

The plugin exposes one filter for hooking. Typically, customizations utilizing this hook would be put into your active theme's functions.php file, or used by another plugin.

c2c_restrict_usernames-validate (filter)

The 'c2c_restrict_usernames-validate' hook allows you to add your own customized checks for the username being registered. You can add additional restrictions or override the assessment performed by the plugin.

Arguments:

• $valid (boolean): The assessment by the plugin about the validity of the username based on settings. True means username can be used.
• $username (string): The username being registered.
• $settings (array): The plugin's settings.

Example:

/**
 * Add custom checks on usernames.
 *
 * Specifically, prevent use of usernames ending in numbers.
 */
function my_restrict_usernames_check( $valid, $username, $options ) {
    // Only do additional checking if the plugin has already performed its
    // checks and deemed the username valid.
    if ( $valid ) {
        // Don't allow usernames to end in numbers.
        if ( preg_match( '/[0-9]+$/', $username ) )
            $valid = false;
    }
    return $valid;
}
add_filter( 'c2c_restrict_usernames-validate', 'my_restrict_usernames_check', 10, 3 );