(PHP 5 >= 5.1.0, PHP 7)
ArrayObject::exchangeArray — Exchange the array for another one
public ArrayObject::exchangeArray ( mixed $input ) : array
Exchange the current array with another array or object.
input
The new array or object to exchange with the current array.
Returns the old array.
Example #1 ArrayObject::exchangeArray() example
<?php
// Array of available fruits
$fruits = array("lemons" => 1, "oranges" => 4, "bananas" => 5, "apples" => 10);
// Array of locations in Europe
$locations = array('Amsterdam', 'Paris', 'London');
$fruitsArrayObject = new ArrayObject($fruits);
// Now exchange fruits for locations
$old = $fruitsArrayObject->exchangeArray($locations);
print_r($old);
print_r($fruitsArrayObject);
?> The above example will output:
Array
(
[lemons] => 1
[oranges] => 4
[bananas] => 5
[apples] => 10
)
ArrayObject Object
(
[0] => Amsterdam
[1] => Paris
[2] => London
)
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https://www.php.net/manual/en/arrayobject.exchangearray.php