function rsum( $v, $w) {$v += $w; return $v;} function rmul($v, $w) {$v *= $w; return $v;} $a = array(1, 2, 3, 4, 5); $x = array(); $b = array_reduce($a, "rsum"); $c = array_reduce($a, "rmul", 10); $d = array_reduce($x, "rsum", 1);
?php function rsum( $v, $w) {$v += $w; return $v;} function rmul($v, $w) {$v *= $w; return $v;} $a = array(1, 2, 3, 4, 5); $x = array(); $b = array_reduce($a, "rsum"); $c = array_reduce($a, "rmul", 10); $d = array_reduce($x, "rsum", 1);?