Laravel集合增量值和键

Question

Hello,

How do I decrement all keys from a collection and convert it to an array?

So let's say I've a collection that looks like this:

Collection {#410 ▼
  #items: array:1 [▼
    1  => 1,
    2 => 6  
  ]
}

I need that to convert like this:

array:1 [▼
  0 => 1,
  1 => 6
]

I know I can do:

$collection->toArray();

But than I get this:

array:1 [▼
  1 => 1
]

I already looked at the docs but can't find it!

Answer 1

You can just make a new array from the collection by looping over the existing collection and assigning the key to be the same as the current key -1.

$newCollection = collect([]);
$collection->each(function($item, $key) use ($newCollection) {
    $newCollection->put($key-1, $item);
});


//$newCollection has decremented keys

Answer 2

From the described desired output it looks like you can use native PHP function array_values which

returns all the values from the array and indexes the array numerically.

http://php.net/manual/en/function.array-values.php

array_values($collection->toArray())