3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $frequency = 19; $resultsCount = 319000; $result = (pow($frequency/2, 2) / $resultsCount - (pow($frequency/2, 2) / $resultsCount) * ((0 + 0 + 0)*3 /100)) * 100; var_dump(); var_dump($result);
based on hWfPa
Output for 5.3.0 - 7.2.0
Warning: var_dump() expects at least 1 parameter, 0 given in /in/Nd3ua on line 8 float(0.028291536050157)
Output for 4.3.0 - 5.2.17
Warning: Wrong parameter count for var_dump() in /in/Nd3ua on line 8 float(0.028291536050157)