Upgrading to 3.0

If you upgrade from version 2 releases, you will notice a few changes. This document details the changes

Minimum supported PHP version

Version 3 drops support for PHP versions prior to PHP 7.1.


The primary change is the Zend\Permissions\Rbac\AssertionInterface::assert() method definition.

The new assert method has the following signature:

namespace Zend\Permissions\Rbac;

public function assert(
    Rbac $rbac,
    RoleInterface $role,
    string $permission
) : bool

The version 2 releases defined the method such that it only accepted a single parameter, Rbac $rbac. Version 3 adds the $role and $permission parameters. This simplifies implementation of dynamic assertions using the role and the permission information.

For instance, imagine you want to disable a specific permission foo for an admin role; you can implement that as follows:

public function assert(Rbac $rbac, RoleInterface $role, string $permission) : bool
    return ! ($permission === 'foo' && $role->getName() === 'admin');

If you were previously implementing AssertionInterface, you will need to update the assert() signature to match the changes in version 3.

If you were creating assertions as PHP callables, you may continue to use the existing signature; however, you may also expand them to accept the new arguments should they assist you in creating more complex, dynamic assertions.


Zend\Permissions\Rbac\RoleInterface also received a number of changes, including type hints and method name changes.

Type hints

With the update to PHP 7.1, we also updated the RoleInterface to provide:

  • scalar type hints where applicable (addPermission() and hasPermission()).
  • add return type hints (including scalar type hints) to all methods.

You will need to examine the RoleInterface definitions to determine what changes to make to your implementations.

setParent becomes addParent

In version 3, we renamed the method Role::setParent() to Role::addParent(). This naming is more consistent with other method names, such as Role::addChild(), and also makes clear that more than one parent may be provided to any given role.

getParent becomes getParents

In line with the previous change, getParent() was also renamed to getParents(), which returns an array of RoleInterface instances.

Removed support for string arguments in Role::addChild

Version 3 no longer allows adding a child using a string role name; you may only provide RoleInterface instances.

Adds getChildren

Since roles may have multiple children, the method getChildren() was added; it returns an array of RoleInterface instances.

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