Laravel - Collections - Method Whenempty
The whenEmpty
method will execute the given callback when the collection is empty:
$collection = collect(['Michael', 'Tom']);
$collection->whenEmpty(function ($collection) {
return $collection->push('Adam');
});
$collection->all();
// ['Michael', 'Tom']
$collection = collect();
$collection->whenEmpty(function ($collection) {
return $collection->push('Adam');
});
$collection->all();
// ['Adam']
A second closure may be passed to the whenEmpty
method that will be executed when the collection is not empty:
$collection = collect(['Michael', 'Tom']);
$collection->whenEmpty(function ($collection) {
return $collection->push('Adam');
}, function ($collection) {
return $collection->push('Taylor');
});
$collection->all();
// ['Michael', 'Tom', 'Taylor']
For the inverse of whenEmpty
, see the whenNotEmpty
method.