Check if ArrayCollection is empty

Question

I have an Entity Order which hold Suppliers in an Arraycollection. In my controller i want to check if this arraycollection is empty:

$suppliers = $order->getSuppliers();

I tried:

if(!($suppliers)) {}
if(empty($suppliers)) {}

Any ideas?

score 94 · Accepted Answer · edited Mar 05 '19 at 10:40

94

Doctrine ArrayCollection has a method isEmpty that will do what you are looking for.

if ($suppliers->isEmpty()) { }

Take a look at the documentation for it here

edited Mar 05 '19 at 10:40

Community

answered Jul 14 '13 at 19:52

Ken Hannel

Note: This is preferable over count() == 0. http://www.doctrine-project.org/api/common/2.3/source-class-Doctrine.Common.Collections.ArrayCollection.html#343-353 – Stillmatic1985 Jun 23 '17 at 12:21
Yes, and you are bond to Doctrine (for ever) :-/ – Uros Majeric Jun 14 '18 at 10:26
1

@UrosMajeric - not really, you would just need to ensure that your concrete methods (or your own interface) matched the Collection interface if you migrated away from Doctrine. – Ken Hannel Jul 23 '18 at 21:30
4

In addition to what @KenHannel said, one could also add `Order::hasSuppliers(): bool` method, which returns `$this->suppliers->isEmpty()`. This way, if someday you decide to migrate from Doctrine, you will need to change your code in only one place. – iloo Sep 24 '18 at 10:11

score 7 · Answer 2 · answered Dec 17 '14 at 14:34

7

You can also use the count() PHP function:

if (count($suppliers) < 1) { }

answered Dec 17 '14 at 14:34

A.L

2 Answers2