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    Generator 클래스

    (PHP 5 >= 5.5.0, PHP 7)

    소개

    Generator 객체는 generators 로부터 반한됩니다.

    Caution

    Generator 객체는 new 키워드로 만들수 없습니다.

    클래스 개요

    Generator implements Iterator {
    /* 메소드 */
    public mixed current ( void )
    public mixed key ( void )
    public void next ( void )
    public void rewind ( void )
    public mixed send ( mixed $value )
    public mixed throw ( Exception $exception )
    public bool valid ( void )
    public void __wakeup ( void )
    }

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    User Contributed Notes 1 note

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    Pistachio
    8 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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