ArrayObject::offsetSet

(PHP 5, PHP 7, PHP 8)

ArrayObject::offsetSetSets the value at the specified index to newval

Descrizione

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

Sets the value at the specified index to newval.

Elenco dei parametri

key

The index being set.

value

The new value for the key.

Valori restituiti

Nessun valore viene restituito.

Esempi

Example #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);
?>

Il precedente esempio visualizzerà:

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

Vedere anche:

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User Contributed Notes 2 notes

up
3
jerikojerk
11 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
13 years ago
If $index is null, $newval is naturally pushed onto the end of the array as ArrayObject::append
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