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run code in 500+ PHP versions simultaneously
<?php $list = new SplDoublyLinkedList; $list->push("foo"); $list->push("bar"); var_dump($list->serialize()); var_dump(serialize(array("foo", "bar")));
Output for 5.3.0 - 5.3.29
Fatal error: Call to undefined method SplDoublyLinkedList::serialize() in /in/G3BUY on line 5
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Fatal error: Class 'SplDoublyLinkedList' not found in /in/G3BUY on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: spldoublylinkedlist in /in/G3BUY on line 2
Output for 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 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
string(26) "i:0;:s:3:"foo";:s:3:"bar";" string(34) "a:2:{i:0;s:3:"foo";i:1;s:3:"bar";}"

preferences:
34.88 ms | 1151 KiB | 15 Q