ArrayObject::offsetSet

    (PHP 5, PHP 7, PHP 8)

    ArrayObject::offsetSet — Sets the value at the specified index to newval

    Опис

    public ArrayObject::offsetSet(mixed $key, mixed $value): void

    Sets the value at the specified index to newval.

    Параметри

    key

    The index being set.

    value

    The new value for the key.

    Значення, що повертаються

    Не повертає значень.

    Приклади

    Приклад #1 ArrayObject::offsetSet() example

    <?php
    class Example {
    public     $property = 'prop:public';
    }
    $arrayobj = new ArrayObject(new Example());
    $arrayobj->offsetSet(4, 'four');
    $arrayobj->offsetSet('group', array('g1', 'g2'));
    var_dump($arrayobj);

    $arrayobj = new ArrayObject(array('zero','one'));
    $arrayobj->offsetSet(null, 'last');
    var_dump($arrayobj);
    ?>

    Поданий вище приклад виведе:

    object(ArrayObject)#1 (1) {
  ["storage":"ArrayObject":private]=>
  object(Example)#2 (3) {
    ["property"]=>
    string(11) "prop:public"
    ["4"]=>
    string(4) "four"
    ["group"]=>
    array(2) {
      [0]=>
      string(2) "g1"
      [1]=>
      string(2) "g2"
    }
  }
}
object(ArrayObject)#3 (1) {
  ["storage":"ArrayObject":private]=>
  array(3) {
    [0]=>
    string(4) "zero"
    [1]=>
    string(3) "one"
    [2]=>
    string(4) "last"
  }
}

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    User Contributed Notes 2 notes

    up
    3
    jerikojerk
    14 years ago
    On my php 5.3.5 installation, i discovered that value can be set by reference and not by copy ... depending the context..

    so this is différent from what a regular array()

    <?php

    function set(&$x, &$a )
    {
    $x[] = $a;
    }

    $x = new ArrayObject();
    $y = array();
    $z = new ArrayObject();

    $a = array( 'foo' );
    set($y,$a);
    set($x,$a);
    $z[]=$a;

    $a = array( 'bar');

    set($x,$a);
    set($y,$a);
    $z[]=$a;

    print_r($x);
    print_r($y);
    print_r($z);
    ?>

    // output
    ArrayObject Object
    (
    [storage:ArrayObject:private] => Array
    (
    [0] => Array
    (
    [0] => bar
    )

    [1] => Array
    (
    [0] => bar
    )

    )

    )
    Array
    (
    [0] => Array
    (
    [0] => foo
    )

    [1] => Array
    (
    [0] => bar
    )

    )
    ArrayObject Object
    (
    [storage:ArrayObject:private] => Array
    (
    [0] => Array
    (
    [0] => bar
    )

    [1] => Array
    (
    [0] => bar
    )

    )

    )
    up
    2
    n dot lenepveu at gmail dot com
    17 years ago
    If $index is null, $newval is naturally pushed onto the end of the array as ArrayObject::append
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