The CachingIterator class

    (PHP 5, PHP 7, PHP 8)

    Introduction

    This object supports cached iteration over another iterator.

    Class synopsis

    class CachingIterator extends IteratorIterator implements ArrayAccess, Countable, Stringable {
    /* Constants */
    public const int CALL_TOSTRING;
    public const int CATCH_GET_CHILD;
    public const int TOSTRING_USE_KEY;
    public const int TOSTRING_USE_CURRENT;
    public const int TOSTRING_USE_INNER;
    public const int FULL_CACHE;
    /* Methods */
    public __construct(Iterator $iterator, int $flags = CachingIterator::CALL_TOSTRING)
    public count(): int
    public current(): mixed
    public getCache(): array
    public getFlags(): int
    public hasNext(): bool
    public key(): scalar
    public next(): void
    public offsetExists(string $key): bool
    public offsetGet(string $key): mixed
    public offsetSet(string $key, mixed $value): void
    public offsetUnset(string $key): void
    public rewind(): void
    public setFlags(int $flags): void
    public __toString(): string
    public valid(): bool
    /* Inherited methods */
    public IteratorIterator::current(): mixed
    public IteratorIterator::getInnerIterator(): ?Iterator
    public IteratorIterator::key(): mixed
    public IteratorIterator::next(): void
    public IteratorIterator::rewind(): void
    public IteratorIterator::valid(): bool
    }

    Predefined Constants

    CachingIterator::CALL_TOSTRING

    Convert every element to string.

    CachingIterator::CATCH_GET_CHILD

    Don't throw exception in accessing children.

    CachingIterator::TOSTRING_USE_KEY

    Use key for conversion to string.

    CachingIterator::TOSTRING_USE_CURRENT

    Use current for conversion to string.

    CachingIterator::TOSTRING_USE_INNER

    Use inner for conversion to string.

    CachingIterator::FULL_CACHE

    Cache all read data.

    Changelog

    Version Description
    8.0.0 CachingIterator implements Stringable now.

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