Online PHP editor | output for SqgJO

<?php $GST = Array ( 18 ); $Amount = Array ( 25000 ); $Discount = Array ( 10 ); array_map( function($GST, $Amount, $Discount){ var_dump($GST, $Amount, $Discount); echo PHP_EOL; echo 'GST: '.$GST.' Amount: '.$Amount.' Discount: '.$Discount.PHP_EOL; echo 'Discount: '.(($Amount * $Discount) / 100).' Amount After Discount: '.($Amount - (($Amount * $Discount) / 100)).PHP_EOL; echo 'GST: '.(($Amount - (($Amount * $Discount) / 100)) * $GST / 100).PHP_EOL; //return ($Amount - (($Amount * $Discount) / 100)) * $GST / 100; }, !is_array($GST) ? [] : $GST, !is_array($Amount) ? [] : $Amount, !is_array($Discount) ? [] : $Discount );