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  • SplObjectStorage::valid()

    (PHP 5 >= 5.1.0, PHP 7)

    Returns if the current iterator entry is valid

    说明

    publicSplObjectStorage::valid(void) : bool

    Returns if the current iterator entry is valid.

    参数

    此函数没有参数。

    返回值

    Returns TRUE if the iterator entry is valid,FALSE otherwise.

    范例

    SplObjectStorage::valid() example

    <?php
    $s = new SplObjectStorage();
    $o1 = new StdClass;
    $o2 = new StdClass;
    $s->attach($o1, "d1");
    $s->attach($o2, "d2");
    $s->rewind();
    while($s->valid()) {
        echo $s->key()."\n";
        $s->next();
    }
    ?>
    

    以上例程的输出类似于:

    0
    1
    

    参见

    • SplObjectStorage::current() Returns the current storage entry
    • SplObjectStorage::getInfo() Returns the data associated with the current iterator entry