SplObjectStorage::attach

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

    SplObjectStorage::attach — Adds an object in the storage

    说明

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

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

    参数

    object

    The object to add.

    info

    The data to associate with the object.

    返回值

    没有返回值。

    示例

    示例 #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]);

    ?>

    以上示例的输出类似于：

    NULL string(5) "hello"

    参见

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