PHP中可变数量的参数[关闭]

Question

In the course of converting some code from Java to PHP, I came across the following Java code:

void doSomething(String requiered, String... optionals) {...}

I know it's possible to create a similar function signature using func_get_args() and I know I could also pass the unknown count of params in an array. However, neither seems straight forward to me, so I was wondering if there might be a better way to have a variable number of arguments in PHP.

Answer 1

PHP 5.6 introduces ability to have this exact construct. From PHP manual:

Argument lists may include the ... token to denote that the function accepts a variable number of arguments. The arguments will be passed into the given variable as an array

<?php
function sum($acc, ...$numbers) {
    foreach ($numbers as $n) {
        $acc += $n;
    }
    return $acc;
}

echo sum(1, 2, 3, 4);
?>

http://php.net/manual/en/functions.arguments.php#functions.variable-arg-list