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    A classe RegexIterator

    (PHP 5 >= 5.2.0, PHP 7, PHP 8)

    Introdução

    Este iterador pode ser usado para filtrar outro iterador com base em uma expressão regular.

    Resumo da classe

    class RegexIterator extends FilterIterator {
    /* Constantes */
    public const int USE_KEY;
    public const int INVERT_MATCH;
    public const int MATCH;
    public const int GET_MATCH;
    public const int ALL_MATCHES;
    public const int SPLIT;
    public const int REPLACE;
    /* Propriedades */
    public ?string $replacement = null;
    /* Métodos */
    public __construct(
        Iterator $iterator,
        string $pattern,
        int $mode = RegexIterator::MATCH,
        int $flags = 0,
        int $pregFlags = 0
    )
    public accept(): bool
    public getFlags(): int
    public getMode(): int
    public getPregFlags(): int
    public getRegex(): string
    public setFlags(int $flags): void
    public setMode(int $mode): void
    public setPregFlags(int $pregFlags): void
    /* Métodos herdados */
    public FilterIterator::accept(): bool
    public FilterIterator::current(): mixed
    public FilterIterator::key(): mixed
    public FilterIterator::next(): void
    public FilterIterator::rewind(): void
    public FilterIterator::valid(): bool
    public IteratorIterator::current(): mixed
    public IteratorIterator::getInnerIterator(): ?Iterator
    public IteratorIterator::key(): mixed
    public IteratorIterator::next(): void
    public IteratorIterator::rewind(): void
    public IteratorIterator::valid(): bool
    }

    Constantes pré-definidas

    Modos de Operação do RegexIterator

    RegexIterator::ALL_MATCHES

    Retorna todas as correspondências para a entrada atual (veja preg_match_all()).

    RegexIterator::GET_MATCH

    Retorna a primeira correspondência para a entrada atual (veja preg_match()).

    RegexIterator::MATCH

    Execute somente a correspondência (filtro) para a entrada atual (veja preg_match()).

    RegexIterator::REPLACE

    Substitui a entrada atual (veja preg_replace(); Não totalmente implementado ainda)

    RegexIterator::SPLIT

    Retorna os valores divididos para a entrada atual (veja preg_split()).

    RegexIterator Flags

    RegexIterator::USE_KEY

    Flag especial: Correspondência à chave da entrada em vez do valor da entrada.

    RegexIterator::INVERT_MATCH

    Inverte o valor de retorno de RegexIterator::accept().

    Propriedades

    replacement

    Índice

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    User Contributed Notes 2 notes

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    33
    jinmoku at hotmail dot com
    13 years ago
    An exemple :

    <?php
    $a     = new ArrayIterator(array('test1', 'test2', 'test3'));
    $i = new RegexIterator($a, '/^(test)(\d+)/', RegexIterator::REPLACE);
    $i->replacement = '$2:$1';
          
    print_r(iterator_to_array($i));
    /*
    Array
    (
        [0] => 1:test
        [1] => 2:test
        [2] => 3:test
    )
    */
    ?>
    up
    1
    chris dot snyder at totara dot com
    1 year ago
    In case the difference between modes RegexIterator::MATCH and RegexIterator::GET_MATCH is not immediately clear:

    MATCH will only return one value per matched element, as a string.

    GET_MATCH will return as many values, per matched element, as there are sub-patterns. If there are sub-patterns, each iteration returns an indexed array with the full pattern match at 0 and each of the sub-pattern matches as another element.

    If there are no sub-patterns, the behaviour of GET_MATCH is the same as MATCH.
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