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    SplObjectStorage::attach

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

    SplObjectStorage::attach — Adds an object in the storage

    Descrizione

    public SplObjectStorage::attach(object $object, mixed $info = null): void

    Adds an object inside the storage, and optionally associate it to some data.

    Elenco dei parametri

    object

    The object to add.

    info

    The data to associate with the object.

    Valori restituiti

    Nessun valore viene restituito.

    Esempi

    Example #1 SplObjectStorage::attach() example

    <?php
    $o1     = new stdClass;
    $o2 = new stdClass;
    $s = new SplObjectStorage();
    $s->attach($o1); // similar to $s[$o1] = NULL;
    $s->attach($o2, "hello"); // similar to $s[$o2] = "hello";

    var_dump($s[$o1]);
    var_dump($s[$o2]);

    ?>

    Il precedente esempio visualizzerà qualcosa simile a:

    NULL
string(5) "hello"

    Vedere anche:

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    User Contributed Notes 1 note

    up
    -7
    rafal dot wrzeszcz at wrzasq dot pl
    11 years ago
    Better way (imho) is to call:

    $storage->removeAll($storage);

    Especially, that sometimes (had no time to investigate) removeAllExcept(new SplObjectStorage()) leaves some elements.
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