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    The LimitIterator class

    (PHP 5 >= 5.1.0, PHP 7)

    Wstęp

    The LimitIterator class allows iteration over a limited subset of items in an Iterator.

    Krótki opis klasy

    LimitIterator extends IteratorIterator implements OuterIterator {
    /* Metody */
    public __construct ( Iterator $iterator [, int $offset = 0 [, int $count = -1 ]] )
    public current ( void ) : mixed
    public getInnerIterator ( void ) : Iterator
    public getPosition ( void ) : int
    public key ( void ) : mixed
    public next ( void ) : void
    public rewind ( void ) : void
    public seek ( int $position ) : int
    public valid ( void ) : bool
    }

    Przykłady

    Przykład #1 LimitIterator usage example

    <?php

    // Create an iterator to be limited
    $fruits = new ArrayIterator(array(
            'apple',
            'banana',
            'cherry',
            'damson',
            'elderberry'
    ));

    // Loop over first three fruits only
    foreach (new LimitIterator($fruits, 0, 3) as $fruit) {
            var_dump($fruit);
    }

    echo     "\n";

    // Loop from third fruit until the end
    // Note: offset starts from zero for apple
    foreach (new LimitIterator($fruits, 2) as $fruit) {
            var_dump($fruit);
    }

    ?>

    Powyższy przykład wyświetli:

    string(5) "apple"
string(6) "banana"
string(6) "cherry"

string(6) "cherry"
string(6) "damson"
string(10) "elderberry"

    Spis treści

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    User Contributed Notes 1 note

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    christophg at grenz-bonn dot de
    2 years ago
    If the inner iterator implements SeekableIterator, LimitIterator uses seek() after rewind() to move to the offset.
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