<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<?php
function sumNum()
{
$result = 0;
$array = array(1, 20, 15, 17, 24, 35);
foreach ($array as $i) {
$result += $i;
}
return $result;
}
echo sumNum() . "<br>";
function mulNum()
{
$result = 0;
$array = array(26, 17, 136, 12, 79, 15);
foreach ($array as $i) {
$result += $i * $i;
}
return $result;
}
echo mulNum() . "<br>";
function strNum()
{
$array = array(1, 2, 3, 4, 5, 6, 7, 8, 9);
foreach ($array as $i) {
echo "-" . $i;
function avgNum($array)
{
return sumNum($array) / count($array);
}
