3v4l.org

run code in 300+ PHP versions simultaneously
<?php $frequency = 19; $resultsCount = 319000; $result = (((pow($frequency/2, 2) / $resultsCount) - (pow($frequency/2, 2) / $resultsCount)) * ((0 + 0 + 0)*3 / 100)) * 100; var_dump($result);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
float(0)
preferences:
302.26 ms | 406 KiB | 456 Q