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run code in 300+ PHP versions simultaneously
<?php class FStack extends ArrayObject { } $stack = new FStack; $stack['xxx']['zzz'] = "hello"; var_dump($stack);
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 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
object(FStack)#1 (1) { ["storage":"ArrayObject":private]=> array(1) { ["xxx"]=> array(1) { ["zzz"]=> string(5) "hello" } } }
Output for 5.2.7 - 5.2.17
object(FStack)#1 (1) { ["xxx"]=> array(1) { ["zzz"]=> string(5) "hello" } }
Output for 5.2.0 - 5.2.6
Notice: Undefined index: xxx in /in/sKKo1 on line 8 object(FStack)#1 (0) { }
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Notice: Undefined index: xxx in /in/sKKo1 on line 8 Fatal error: Objects used as arrays in post/pre increment/decrement must return values by reference in /in/sKKo1 on line 8
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Class fstack: Cannot inherit from undefined class arrayobject in /in/sKKo1 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Class fstack: Cannot inherit from undefined class arrayobject in /in/sKKo1 on line 3

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