3v4l.org

run code in 300+ PHP versions simultaneously
<?php $pricePerDay = 800; $days = range(1,20); $arr = array(); foreach ($days as $day) { $price = ($day * $pricePerDay); $arr[$day] = $price; //echo sprintf('Dag: %s, Pris: %s ', $day, $price) . PHP_EOL; } echo var_export($arr, true);
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 - 5.6.40, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array ( 1 => 800, 2 => 1600, 3 => 2400, 4 => 3200, 5 => 4000, 6 => 4800, 7 => 5600, 8 => 6400, 9 => 7200, 10 => 8000, 11 => 8800, 12 => 9600, 13 => 10400, 14 => 11200, 15 => 12000, 16 => 12800, 17 => 13600, 18 => 14400, 19 => 15200, 20 => 16000, )

preferences:
221.26 ms | 406 KiB | 455 Q