PHP Conference Nagoya 2025

    La clase RegexIterator

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

    Introducción

    Este iterador puede ser usado para filtrar otro iterador basado en una expresión regular.

    Sinopsis de la Clase

    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;
    /* Propiedades */
    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 heredados */
    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 predefinidas

    Modos de operación RegexIterator

    RegexIterator::ALL_MATCHES

    Devuelve todas las coincidencias de la entrada actual. (véase preg_match_all()).

    RegexIterator::GET_MATCH

    Devuelve la primera coincidencia de la entrada actual. (véase preg_match()).

    RegexIterator::MATCH

    Sólo ejecuta la coincidencia (filtro) para la entrada actual (véase preg_match()).

    RegexIterator::REPLACE

    Reemplaza la entrada actual (véase preg_replace(); No está completamente implementado)

    RegexIterator::SPLIT

    Returns the split values for the current entry (see preg_split()).

    Flags RegexIterator

    RegexIterator::USE_KEY

    Flag especial: Coincidir con la clave de entrada en lugar del valor de la entrada.

    RegexIterator::INVERT_MATCH

    Inverts the return value of RegexIterator::accept().

    Propiedades

    replacement

    Tabla de contenidos

    Found A Problem?

    Learn How To Improve This Page • Submit a Pull Request • Report a Bug
    ＋add a note

    User Contributed Notes 2 notes

    up
    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.
    ＋add a note
    To Top