Online PHP editor | refs for lvrQM

<?php /*function add($a, $b){ return $a + $b; } echo add(2,3); function subtract ($a, $b){ return $a - $b; } echo subtract(5,4); function concatenate($a, $b){ return $a . $b; } echo concatenate('Hello', 'Wie');*/ //$arr = ['test', 'test2']; //print_r($arr[0]); function addToArray($arg1, $arg2){ $arr2 = []; $arr2[] = $arg1; $arr2[] = $arg2; print_r($arr2); } addToArray('Hallo','Yoooo');