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run code in 300+ PHP versions simultaneously
<?php function foo(&$bar) { var_dump($bar); } class Bar { } foo(new Bar());
Output for 7.0.7 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Notice: Only variables should be passed by reference in /in/RVcA3 on line 11 object(Bar)#1 (0) { }
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, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.6, 7.3.32 - 7.3.33
object(Bar)#1 (0) { }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
object(bar)(0) { }

preferences:
172.82 ms | 408 KiB | 5 Q