CachingIterator 类

    (PHP 5, PHP 7, PHP 8)

    简介

    该对象支持在另一迭代器上缓存迭代。

    类摘要

    classCachingIteratorextendsIteratorIteratorimplementsArrayAccess, Countable, Stringable {
    publicconstintCALL_TOSTRING;
    publicconstintCATCH_GET_CHILD;
    publicconstintTOSTRING_USE_KEY;
    publicconstintTOSTRING_USE_CURRENT;
    publicconstintTOSTRING_USE_INNER;
    publicconstintFULL_CACHE;
    public__construct(Iterator$iterator, int$flags = CachingIterator::CALL_TOSTRING)
    publiccount(): int
    publiccurrent(): mixed
    publicgetCache(): array
    publicgetFlags(): int
    publichasNext(): bool
    publickey(): scalar
    publicnext(): void
    publicoffsetExists(string$key): bool
    publicoffsetGet(string$key): mixed
    publicoffsetSet(string$key, mixed$value): void
    publicoffsetUnset(string$key): void
    publicrewind(): void
    publicsetFlags(int$flags): void
    public__toString(): string
    publicvalid(): bool
    publicIteratorIterator::current(): mixed
    publicIteratorIterator::getInnerIterator(): ?Iterator
    publicIteratorIterator::key(): mixed
    publicIteratorIterator::next(): void
    publicIteratorIterator::rewind(): void
    publicIteratorIterator::valid(): bool
    }

    预定义常量

    CachingIterator::CALL_TOSTRING

    每个元素转换为字符串。

    CachingIterator::CATCH_GET_CHILD

    访问子元素时不要抛出异常。

    CachingIterator::TOSTRING_USE_KEY

    转换为字符串时使用 key。

    CachingIterator::TOSTRING_USE_CURRENT

    转换为字符串时使用 current。

    CachingIterator::TOSTRING_USE_INNER

    转换为字符串时使用 inner。

    CachingIterator::FULL_CACHE

    缓存所有读取的数据。

    更新日志

    版本说明
    8.0.0CachingIterator 现在实现了 Stringable。

    目录

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