<?php
/**
* @author Gutsulyak Vadim <*****@*****.**>
* @param $a
* @param $b
*/
function sum($a, $b)
{
return $a + $b;
}
$result = sum(19, 8);
echo sum(19, 8);
function sumAll()
{
$args = func_get_args();
$result = 0;
foreach ($args as $argument) {
$result += $argument;
}
return $result;
}
echo '<br>';
echo sumAll(10, 4, 5, 8, 43);
<!DOCTYPE html>
<html>
<head>
<title>Sum</title>
</head>
<body>
<form action="" method="post">
<label for="num">Введите число</label><br>
<input id="num" type="text" name="num" required>
<input type="submit">
</form>
<?php
if ($_POST) {
echo "Сумма всех чисел: " . sumAll();
}
?>
</body>
</html>
<?php
function sumAll()
{
$num = trim(strip_tags($_POST["num"]));
if (!is_numeric($num)) {
die("Вы вели не число");
}
$len = strlen($num);
$sum = 0;
for ($i = 0; $i < $len; $i++) {
$sum += $num[$i];
}
return $sum;
