3 points in PHP function parameters

Question

I am looking at Laravel code and found this in the Authenticate.php middleware:

  public function handle($request, Closure $next, ...$guards)
    {
        $this->authenticate($guards);

        return $next($request);
    }

I have never seen such a thing, what do the 3 points do? I have googled it but found nothing

Possible duplicate of [PHP function's argument with 3 dots before variable](http://stackoverflow.com/questions/40439733/php-functions-argument-with-3-dots-before-variable) — Sivagopal Manpragada, Mar 06 '17 at 09:00

score 7 · Accepted Answer · answered Mar 06 '17 at 08:58

7

That's a spread operator... here's the relevant documentation: http://php.net/manual/en/functions.arguments.php#functions.variable-arg-list

It essentially converts an array into a set of arguments, or converts a set of arguments into an array.

answered Mar 06 '17 at 08:58

Bradley

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score 3 · Answer 2 · answered Mar 06 '17 at 08:59

PHP has support for variable-length argument lists in user-defined functions. This is implemented using the ... token in PHP 5.6 and later, and using the func_num_args(), func_get_arg(), and func_get_args() functions in PHP 5.5 and earlier. Adding php.net link

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

score 1 · Answer 3 · answered Aug 25 '19 at 21:53

1


function foo(...$params)
{

  print_r($params);

}

foo('a','b');

Output

array('a','b');

answered Aug 25 '19 at 21:53

dılo sürücü

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3 points in PHP function parameters

3 Answers3