3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (!class_exists('SimpleXMLElement') || !class_exists('MultipleIterator')) { die('not applicable'); } $mi = new MultipleIterator(); $mi->attachIterator(new IteratorIterator(new SimpleXMLElement('<r/>'))); $mi->rewind();
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.26, 8.1.0 - 8.1.13
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
not applicable

preferences:
57.55 ms | 411 KiB | 5 Q