function user_role_permissions in Drupal 7

Same name and namespace in other branches

1. 8 core/modules/user/user.module \user_role_permissions()
2. 9 core/modules/user/user.module \user_role_permissions()
3. 10 core/modules/user/user.module \user_role_permissions()

Determine the permissions for one or more roles.

Parameters

$roles: An array whose keys are the role IDs of interest, such as $user->roles.

Return value

If $roles is a non-empty array, an array indexed by role ID is returned. Each value is an array whose keys are the permission strings for the given role ID. If $roles is empty nothing is returned.

2 calls to user_role_permissions()

user_access in modules/user/user.module

Determine whether the user has a given privilege.

user_admin_permissions in modules/user/user.admin.inc

Menu callback: administer permissions.

5 string references to 'user_role_permissions'

UserPermissionsTestCase::testUserPermissionChanges in modules/user/user.test

Change user permissions and check user_access().

user_role_delete in modules/user/user.module

Delete a user role from database.

user_role_grant_permissions in modules/user/user.module

Grant permissions to a user role.

user_role_revoke_permissions in modules/user/user.module

Revoke permissions from a user role.

user_role_save in modules/user/user.module

Save a user role to the database.

File

modules/user/user.module, line 747

Enables the user registration and login system.

Code

function user_role_permissions($roles = array()) {
  $cache =& drupal_static(__FUNCTION__, array());
  $role_permissions = $fetch = array();
  if ($roles) {
    foreach ($roles as $rid => $name) {
      if (isset($cache[$rid])) {
        $role_permissions[$rid] = $cache[$rid];
      }
      else {

        // Add this rid to the list of those needing to be fetched.
        $fetch[] = $rid;

        // Prepare in case no permissions are returned.
        $cache[$rid] = array();
      }
    }
    if ($fetch) {

      // Get from the database permissions that were not in the static variable.
      // Only role IDs with at least one permission assigned will return rows.
      $result = db_query("SELECT rid, permission FROM {role_permission} WHERE rid IN (:fetch)", array(
        ':fetch' => $fetch,
      ));
      foreach ($result as $row) {
        $cache[$row->rid][$row->permission] = TRUE;
      }
      foreach ($fetch as $rid) {

        // For every rid, we know we at least assigned an empty array.
        $role_permissions[$rid] = $cache[$rid];
      }
    }
  }
  return $role_permissions;
}