Online PHP editor | output for WKtJC

<?php $p = 1; for ($i = 1; $i <= 3; $i++) { echo '$p before calculation: ' . $p . PHP_EOL; for ($k = 1; $k <= $i; $k++) { $p = $p * 3; } echo '$p after calculation: ' . $p . PHP_EOL; } echo '$p at end of script: ' . $p . PHP_EOL; echo '=====' . PHP_EOL; unset($p); // just for having both examples at once for ($i = 1; $i <= 3; $i++) { $p = 1; echo '$p before calculation: ' . $p . PHP_EOL; for ($k = 1; $k <= $i; $k++) { $p = $p * 3; } echo '$p after calculation: ' . $p . PHP_EOL; } echo '$p at end of script: ' . $p . PHP_EOL;