How to use a function with an optional argument defined as the third

Question

I use the elses class, and this person defined a function with five arguments.

in Sentry.php:

function checkLogin($user = '',$pass = '',$group = 10,$goodRedirect = '',$badRedirect = '')

If all five fields are completed, this will lead to the login procedure.

Now on the page where he explains how to use this, there is a fragment that, according to php.net, does not make sense.

on the page that loads the sentinel:

require_once('../system/Sentry.php');
$theSentry = new Sentry();
if(!$theSentry->checkLogin(2)){ header("Location: login.php"); die(); }

which should behave by default so that it checks to see if the $ group argument is <= 10 (the default). In this situation, it should be two. If the user has a group variable <= 2 set, this should allow the person to view the page.

However, this does not work for a very obvious reason either: the php manual states:

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​​?:

checkLogin(2)

Answer 1

- PHP- . Java :

public void login(String username)
public void login(String username, String password)

PHP :

function login($username, $password = '')

$username , $password . , . , . 1 , , "", .

, :

function checkLoginGroup($group = 10) {
  $this->checkLogin('', '', $group);
}

, , , :

$theSentry->checkLoginGroup(2);

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Answer 2

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checkLogin('', '', 20);

-, :

checkLogin(null, null, 20);

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NULL, , , , , NULL ( , afterall!); - , ... ^^

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Answer 3

Mythicas , : .

function checkLogin($args) {
    $defaults = array('user' => null, 'pass' => null, 'group' => null, ...);
    $args = array_merge($defaults, $args);
    ...
}

checkLogin(array('user' => 'x', 'group' => 9));

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Answer 4

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Answer 5

checkLogin(NULL,NULL,2);

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