ArrayObject::exchangeArray

    (PHP 5 >= 5.1.0, PHP 7, PHP 8)

    ArrayObject::exchangeArray — Exchange the array for another one

    Опис

    public ArrayObject::exchangeArray(array|object $array): array

    Exchange the current array with another array or object.

    Параметри

    array

    The new array or object to exchange with the current array.

    Значення, що повертаються

    Returns the old array.

    Приклади

    Приклад #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);

    ?>

    Поданий вище приклад виведе:

    Array
(
    [lemons] => 1
    [oranges] => 4
    [bananas] => 5
    [apples] => 10
)
ArrayObject Object
(
    [0] => Amsterdam
    [1] => Paris
    [2] => London
)

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    User Contributed Notes 1 note

    up
    4
    Corentin Larose
    10 years ago
    It's worth notting that ArrayObject::exchangeArray() doesn't call ArrayObject::offsetSet() internally for each offset/property of the array/object provided in argument.

    It's also worth noting the let's say "unexpected" behavior of get/set:

    <?php
    class MyArrayObject extends ArrayObject
    {
    public function     offsetSet($name, $value)
    {
    parent::offsetSet($name . '_control', $value);
    parent::offsetSet($name, $value);
    }
    }

    $test = new MyArrayObject();
    $test->setFlags(\ArrayObject::ARRAY_AS_PROPS);
    $test['my_value_1'] = 1;
    $test['my_value_1'] = $test['my_value_1'] + 1;
    $test['my_value_1'] += 1;
    $test['my_value_1'] ++;
    ++     $test['my_value_1'];

    $test->my_value_2 = 1;
    $test->my_value_2 = $test->my_value_2 + 1;
    $test->my_value_2 += 1;
    $test->my_value_2 ++;
    ++     $test->my_value_2;

    print_r($test);

    // Prints out:
    MyArrayObject Object
    (
    [    storage:ArrayObject:private] => Array
    (
    [    my_value_1_control] => 3
    [my_value_1] => 5
    [my_value_2_control] => 2
    [my_value_2] => 5
    )
    )
    ?>
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