WP_Roles::init_roles()

Source

public function init_roles() {
	if ( empty( $this->roles ) ) {
		return;
	}

	$this->role_objects = array();
	$this->role_names   = array();
	foreach ( array_keys( $this->roles ) as $role ) {
		$this->role_objects[ $role ] = new WP_Role( $role, $this->roles[ $role ]['capabilities'] );
		$this->role_names[ $role ]   = $this->roles[ $role ]['name'];
	}

	/**
	 * Fires after the roles have been initialized, allowing plugins to add their own roles.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_Roles $wp_roles A reference to the WP_Roles object.
	 */
	do_action( 'wp_roles_init', $this );
}

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