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    SplObjectStorage::contains

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

    SplObjectStorage::contains — Checks if the storage contains a specific object

    说明

    public SplObjectStorage::contains(object $object): bool

    Checks if the storage contains the object provided.

    参数

    object

    The object to look for.

    返回值

    Returns true if the object is in the storage, false otherwise.

    示例

    示例 #1 SplObjectStorage::contains() example

    <?php
    $o1     = new stdClass;
    $o2 = new stdClass;

    $s = new SplObjectStorage();

    $s[$o1] = "hello";
    var_dump($s->contains($o1));
    var_dump($s->contains($o2));
    ?>

    以上示例的输出类似于：

    bool(true)
bool(false)

    参见

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