3v4l.org

run code in 300+ PHP versions simultaneously
<?php $it = new \ArrayIterator(array("tmp", "foo", "bar", "bazbar")); $it = new \RegexIterator($it, "/ba(.)/", \RegexIterator::ALL_MATCHES); echo count(iterator_to_array($it));

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54.36 ms | 402 KiB | 5 Q