3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump((1 / 3) === (1 - 2 / 3)); var_dump((1 / 3) - (1 - 2 / 3)); var_dump(PHP_FLOAT_EPSILON);
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
bool(false) float(-5.551115123125783E-17) float(2.220446049250313E-16)
Output for 7.4.0 - 7.4.33
bool(false) float(-5.5511151231258E-17) float(2.2204460492503E-16)
preferences:
127.49 ms | 401 KiB | 123 Q