By John Koster
flip
The flip method will return a new Collection instance where are the all the collection item's keys have been exchanged with their corresponding values.
The following code example demonstrates the effects of the flip method:
1<?php
2
3use Illuminate\Support\Collection;
4
5// Create a new collection instance.
6$collection = new Collection([
7 'first' => 'I am first',
8 'second' => 'I am second',
9 'third' => 'I am third'
10]);
11
12// Flip the original collection.
13$flippedCollection = $collection->flip();
The $flippedCollection variable will now contain a new instance of the Collection class with a structure similar to the following output:
1object(Illuminate\Support\Collection)[134]
2 protected 'items' =>
3 array (size=3)
4 'I am first' => string 'first' (length=5)
5 'I am second' => string 'second' (length=6)
6 'I am third' => string 'third' (length=5)
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