Laravel 5 Collections: Combining the Values of Multiple Traversable Sources With concat

The concat method will create a new collection by combining the values of the collection instance is called on with the provided $source. It is important to note that the source must implement the Traversable interface.

The concat method does not modify the original collection instance, and it will return a new collection instance containing the concatenated items.

#Signature

1public function concat(
2    $source
3);

#Example Use

The following example demonstrates the basic usage of the concat method:

 1$collectionOne = collect([
 2    'first',
 3    'second',
 4    'third'
 5]);
 6 
 7$collectionTwo = $collectionOne->concat([
 8    'third',
 9    'fourth',
10    'fifth'
11]);

After the above example has executed, the $collectionTwo variable will contain the following items:

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