3v4l.org

run code in 300+ PHP versions simultaneously
<?php $iterator = new ArrayIterator([1, 2, 3]); $iteratorbis = new ArrayIterator([4, 5, 6]); $callable = function (Iterator $it) { var_dump($it->current()); echo $it->current() * 5, PHP_EOL; return true; }; iterator_apply($iterator, $callable, [$iterator]); echo "===", PHP_EOL; iterator_apply($iterator, $callable, [$iteratorbis]); echo "===", PHP_EOL; iterator_apply($iteratorbis, $callable, [$iterator]);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
int(1) 5 int(2) 10 int(3) 15 === int(4) 20 int(4) 20 int(4) 20 === NULL 0 NULL 0 NULL 0
preferences:
113.92 ms | 1956 KiB | 4 Q