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<?php class A {} class B {} class_alias("A", "X"); class_alias("B", "X");
Output for 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 - 8.2.19, 8.3.0 - 8.3.7
Warning: Cannot declare class X, because the name is already in use in /in/286mL on line 8
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Warning: Cannot redeclare class X in /in/286mL on line 8

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232.6 ms | 402 KiB | 332 Q