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run code in 300+ PHP versions simultaneously
<?php $hash->{"123"} = "123"; $hash->apple = "pear"; var_dump($hash); echo $hash->{'123'};
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Attempt to assign property "123" on null in /in/tSmWN:2 Stack trace: #0 {main} thrown in /in/tSmWN on line 2
Process exited with code 255.
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 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Creating default object from empty value in /in/tSmWN on line 2 object(stdClass)#1 (2) { ["123"]=> string(3) "123" ["apple"]=> string(4) "pear" } 123
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Strict Standards: Creating default object from empty value in /in/tSmWN on line 2 object(stdClass)#1 (2) { ["123"]=> string(3) "123" ["apple"]=> string(4) "pear" } 123
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
object(stdClass)(2) { [123]=> string(3) "123" ["apple"]=> string(4) "pear" } 123

preferences:
310.61 ms | 402 KiB | 456 Q