entityManage - a helper function for CRUD (create/update/delete + list) entity actions

Usage:

Load an entity object
$user = entityManage('user', 1);
$node = entityManage('node', 1);

Update a node's title
entityManage('node', 1, ['title' => 'New title']);

Get a list of inactive users
$inactiveUsers = entityManage('user', ['status' => 0]);

Get a list of taxonomy terms
$terms = entityManage('taxonomy_term', ['vid' => 'tags']);

Update taxonomy terms that have the name 'TAG NAME'
entityManage('taxonomy_term', ['vid' => 'tags', 'name' => 'TAG NAME'], ['vid' => 'tags', 'name' => 'NEW TAG NAME']);

Delete a node
entityManage('node', 1, 'del');

Delete inactive users
entityManage('user', ['status' => 0], 'del');

Delete a taxonomy term
entityManage('taxonomy_term', ['vid' => 'tags', 'name' => 'NEW TAG NAME'], 'del');

/*
* Entity Manager - a wrapper for entity CRUD & listing operations.
* If $values is empty, it returns the request entity if found, else false.
*/
function entityManage($entity_type, $entityIdArray = [], $values = []) {
 # Load all entities if no Id and no values were supplied
 if (empty($entityIdArray) && empty($values))
   return \Drupal::entityTypeManager()->getStorage($entity_type)->loadMultiple();
 # Try loading the supplied entity
 if (is_array($entityIdArray)) # Find entity using an arry of properties (e.g. vid and term name)
   $entity = \Drupal::entityTypeManager()->getStorage($entity_type)->loadByProperties($entityIdArray);
 else # Find entity using a non-array property (e.g. Id)
   $entity = \Drupal::entityTypeManager()->getStorage($entity_type)->load($entityIdArray);
 # Entity exists
 if (!empty($entity)) {
   # Use the entity object (not array, in case array with object is returned)
   if (is_array($entity) && count($entity) == 1) $entity = $entity[key($entity)];
   # Return entities (in DESC order by keys) if Id or properties were supplied but no values
   if (!empty($entityIdArray) && empty($values)) {
     if (is_array($entity)) { // If multiple, then order by keys DESC
       krsort($entity);
       return $entity;
     } else
       return $entity;
   }
   # Delete the entity if requested
   if (!empty($values) && $values == 'del') {
     if (is_array($entity)) { // Multiple
       foreach ($entity as $e) {
         $e->delete();
       }
       return;
     } else { // One
       $entity->delete();
       return;
     }
   }
   # Update the entity
   foreach ($values as $k => $v) $entity->set($k, $v);
   $entity->save();
 } else { # Initial entity does not exist
   if (!empty($values)) { # Continue if values were supplied
     # Checks for created entity.
     # Fixes duplication if this is run more than once when an entity property gets changed (e.g. term name change)
     if (is_array($entityIdArray)) {
       # Array with properties
       $ak = array_keys($entityIdArray);
       $newEntityIdArray = [];
       # Use supplied values for entity search
       if (is_array($values)) {
         foreach ($ak as $k) $newEntityIdArray = array_merge($newEntityIdArray, [$k => $values[$k]]);
       }
       # Find entity using an arry of properties (e.g. vid and term name)
       $entity = \Drupal::entityTypeManager()->getStorage($entity_type)->loadByProperties($newEntityIdArray);
     } else # Find entity using a non-array property (e.g. Id)
       $entity = \Drupal::entityTypeManager()->getStorage($entity_type)->load($entityIdArray);
     # Entity not previously created
     if (empty($entity)) {
       # Create entity with supplied values
       $entity = \Drupal::entityTypeManager()->getStorage($entity_type)->create($values);
       # Save the entity
       $entity->save();
     }
     # Use the entity object (in case array with object is returned)
     if (is_array($entity)) $entity = $entity[key($entity)];
   }
 }
 # Return the object of the found/created/updated entity
 return !empty($entity) ? $entity : false;
}