3v4l.org

run code in 300+ PHP versions simultaneously
<?php $iterator1 = new ArrayIterator(array(1,2)); $iterator2 = new ArrayIterator(array(3,4)); $appendIterator = new AppendIterator(); $appendIterator->append($iterator1); $appendIterator->append($iterator2); foreach($appendIterator as $element) { echo $element . PHP_EOL; }
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
1 2 3 4
Output for 5.0.0 - 5.0.5
Fatal error: Class 'AppendIterator' not found in /in/7mWRa on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: arrayiterator in /in/7mWRa on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: arrayiterator in /in/7mWRa on line 3

preferences:
257.32 ms | 401 KiB | 336 Q