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<?php var_dump(2 === bcsub(4.1 - 2.1));
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Warning: bcsub() expects at least 2 parameters, 1 given in /in/Zh4bu on line 2 bool(false)
Output for 4.3.0 - 5.2.17
Warning: Wrong parameter count for bcsub() in /in/Zh4bu on line 2 bool(false)