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run code in 150+ php & hhvm versions
Bugs & Features
<?php define('NULL', 'YOLO'); var_dump(NULL); define('true', 'lol'); var_dump(true); define('false', 'wat'); var_dump(false);
Output for 5.1.3 - 5.6.28, 7.0.0 - 7.1.0
NULL Notice: Constant true already defined in /in/MnNbB on line 6 bool(true) Notice: Constant false already defined in /in/MnNbB on line 9 bool(false)
Output for hhvm-3.10.0 - 3.12.0
Notice: Constant NULL already defined in /in/MnNbB on line 3 NULL Notice: Constant true already defined in /in/MnNbB on line 6 bool(true) Notice: Constant false already defined in /in/MnNbB on line 9 bool(false)
Output for 4.3.0 - 4.3.6, 4.3.9 - 4.4.9, 5.0.1 - 5.1.2
string(4) "YOLO" Notice: Constant true already defined in /in/MnNbB on line 6 bool(true) Notice: Constant false already defined in /in/MnNbB on line 9 bool(false)
Output for 4.3.7 - 4.3.8, 5.0.0
string(4) "YOLO" Notice: Constant already defined in /in/MnNbB on line 6 bool(true) Notice: Constant already defined in /in/MnNbB on line 9 bool(false)