ArrayObject::exchangeArray

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

    ArrayObject::exchangeArray — 配列を別の配列と交換する

    説明

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

    現在の配列を、別の配列あるいはオブジェクトと交換します。

    パラメータ

    array

    現在の配列と交換する配列あるいはオブジェクト。

    戻り値

    元の配列を返します。

    例

    例1 ArrayObject::exchangeArray() の例

    <?php
    // フルーツの配列
    $fruits = array("lemons" => 1, "oranges" => 4, "bananas" => 5, "apples" => 10);
    // ヨーロッパの都市の配列
    $locations = array('Amsterdam', 'Paris', 'London');

    $fruitsArrayObject = new ArrayObject($fruits);

    // フルーツを都市と交換します
    $old = $fruitsArrayObject->exchangeArray($locations);
    print_r($old);
    print_r($fruitsArrayObject);

    ?>

    上の例の出力は以下となります。

    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
    11 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:<?phpclass 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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