csu3_am335x/EVSE/GPL/php-8.1.12/tests/lang/foreachLoopIteratorAggregate.003.phpt

--TEST--
foreach with nested iteratorAggregates
--FILE--
<?php
class EnglishMealIterator implements Iterator {
    private $pos=0;
    private $myContent=array("breakfast", "dinner", "tea");

    public function valid(): bool {
        global $indent;
        echo "$indent--> " . __METHOD__ . " ($this->pos)\n";
        return $this->pos<3;
    }

    public function next(): void {
        global $indent;
        echo "$indent--> " . __METHOD__ . " ($this->pos)\n";
        $this->myContent[$this->pos++];
    }

    public function rewind(): void {
        global $indent;
        echo "$indent--> " . __METHOD__ . " ($this->pos)\n";
        $this->pos=0;
    }

    public function current(): mixed {
        global $indent;
        echo "$indent--> " . __METHOD__ . " ($this->pos)\n";
        return $this->myContent[$this->pos];
    }

    public function key(): mixed {
        global $indent;
        echo "$indent--> " . __METHOD__ . " ($this->pos)\n";
        return "meal " . $this->pos;
    }

}

class A1 implements IteratorAggregate {
    function getIterator(): Traversable {
        return new EnglishMealIterator;
    }
}

class A2 implements IteratorAggregate {
    function getIterator(): Traversable {
        return new A1;
    }
}

class A3 implements IteratorAggregate {
    function getIterator(): Traversable {
        return new A2;
    }
}

echo "\n-----( A1: )-----\n";
foreach (new A1 as $k=>$v) {
    echo "$k => $v\n";
}

echo "\n-----( A2: )-----\n";
foreach (new A2 as $k=>$v) {
    echo "$k => $v\n";
}

echo "\n-----( A3: )-----\n";
foreach (new A3 as $k=>$v) {
    echo "$k => $v\n";
}

?>
--EXPECT--
-----( A1: )-----
--> EnglishMealIterator::rewind (0)
--> EnglishMealIterator::valid (0)
--> EnglishMealIterator::current (0)
--> EnglishMealIterator::key (0)
meal 0 => breakfast
--> EnglishMealIterator::next (0)
--> EnglishMealIterator::valid (1)
--> EnglishMealIterator::current (1)
--> EnglishMealIterator::key (1)
meal 1 => dinner
--> EnglishMealIterator::next (1)
--> EnglishMealIterator::valid (2)
--> EnglishMealIterator::current (2)
--> EnglishMealIterator::key (2)
meal 2 => tea
--> EnglishMealIterator::next (2)
--> EnglishMealIterator::valid (3)

-----( A2: )-----
--> EnglishMealIterator::rewind (0)
--> EnglishMealIterator::valid (0)
--> EnglishMealIterator::current (0)
--> EnglishMealIterator::key (0)
meal 0 => breakfast
--> EnglishMealIterator::next (0)
--> EnglishMealIterator::valid (1)
--> EnglishMealIterator::current (1)
--> EnglishMealIterator::key (1)
meal 1 => dinner
--> EnglishMealIterator::next (1)
--> EnglishMealIterator::valid (2)
--> EnglishMealIterator::current (2)
--> EnglishMealIterator::key (2)
meal 2 => tea
--> EnglishMealIterator::next (2)
--> EnglishMealIterator::valid (3)

-----( A3: )-----
--> EnglishMealIterator::rewind (0)
--> EnglishMealIterator::valid (0)
--> EnglishMealIterator::current (0)
--> EnglishMealIterator::key (0)
meal 0 => breakfast
--> EnglishMealIterator::next (0)
--> EnglishMealIterator::valid (1)
--> EnglishMealIterator::current (1)
--> EnglishMealIterator::key (1)
meal 1 => dinner
--> EnglishMealIterator::next (1)
--> EnglishMealIterator::valid (2)
--> EnglishMealIterator::current (2)
--> EnglishMealIterator::key (2)
meal 2 => tea
--> EnglishMealIterator::next (2)
--> EnglishMealIterator::valid (3)