JArrayHelper::pivot

Pivots an array to create a reverse lookup of an array of scalars, arrays or objects.

Signature

public function pivot(array $source, [string $key = null] )

Parameters

$source

The source array.

$key

Where the elements of the source array are objects or arrays, the key to pivot on.

Returns

array

An array of arrays pivoted either on the value of the keys, or an individual key of an object or array.