La classe Generator

    (PHP 5 >= 5.5.0, PHP 7, PHP 8)

    Introduction

    Les objets Generator sont retournés depuis des générateurs.

    Attention

    Les objets Generator ne peuvent pas être instanciés via le mot clé new.

    Synopsis de la classe

    final class Generator implements Iterator {
    /* Méthodes */
    public function current(): mixed
    public function getReturn(): mixed
    public function key(): mixed
    public function next(): void
    public function rewind(): void
    public function send(mixed $value): mixed
    public function throw(Throwable $exception): mixed
    public function valid(): bool
    public function __wakeup(): void
    }

    Voir aussi

    Voir aussi l'itération d'objet.

    Sommaire

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    User Contributed Notes 1 note

    up
    40
    Pistachio
    10 years ago
    Unlike return, yield can be used anywhere within a function so logic can flow more naturally. Take for example the following Fibonacci generator:

<?php
function fib($n)
{
    $cur = 1;
    $prev = 0;
    for ($i = 0; $i < $n; $i++) {
        yield $cur;

        $temp = $cur;
        $cur = $prev + $cur;
        $prev = $temp;
    }
}

$fibs = fib(9);
foreach ($fibs as $fib) {
    echo " " . $fib;
}

// prints: 1 1 2 3 5 8 13 21 34
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