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<?php define("DEVELOPMENT", true); define("DEVELOPMENT", false); var_dump(DEVELOPMENT);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.20, 8.3.0 - 8.3.8
Warning: Constant DEVELOPMENT already defined in /in/7i8XL on line 4 bool(true)
Output for 5.3.26, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Notice: Constant DEVELOPMENT already defined in /in/7i8XL on line 4 bool(true)

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196.07 ms | 402 KiB | 231 Q