PHP How to use class instance inside method

Question

How can I use class instance inside independent method? I some file have:

global $l;
$l = new l('bg');
include('second.php');

In second.php I have:

function a() {
    print_r($l);
}

$l is coming like NULL;

class l declaration:

class l {
    var $lang = array();
    function l($lang) {
    }
    function g($string) {
    }
}

My question - how can I use $l instance inside of my function a. Thanks.

$l is not in scope, global $l would work, but you could also pass it to the function as a parameter (better). — ɴᴀᴛᴇ ᴅᴇᴠ
– ɴᴀᴛᴇ ᴅᴇᴠ, Commented Mar 3, 2014 at 16:39

Halcyon · Accepted Answer · 2014-03-03 16:39:28Z

3

In function a $l is not defined.

Either you pass it in as a parameter or you use global.

function a($l) {
    print_r($l);
}

global is not like var. It does not define a variable to be used as a global. Instead, global allows you to pull variables from the global scope, like:

$l = new l();
function a() {
    global $l;
    print_r($l);
}

I should also add that the use of global is heavily frowned upon, it breaks dependency expectations. This means that if you look at your function a you can't see that it needs $l. If it's a parameter then you know it needs $l.

answered Mar 3, 2014 at 16:39

Halcyon

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1 Comment

bel Over a year ago

Absolutely fabulous! Thank you.

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