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<?php $divisor = 0.2; var_dump(abs(fmod(-25, $divisor)) < abs($divisor));
based on bvAWY
Output for 7.1.25 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.28, 7.4.0 - 7.4.16, 8.0.0 - 8.0.3
bool(true)